Envoy

Supported OS Linux Windows Mac OS

Integration version5.0.0

Overview

This check collects distributed system observability metrics from Envoy.

Setup

Installation

The Envoy check is included in the Datadog Agent package, so you don’t need to install anything else on your server.

Istio

If you are using Envoy as part of Istio, configure the Envoy integration to collect metrics from the Istio proxy metrics endpoint.

instances:
  - openmetrics_endpoint: localhost:15090/stats/prometheus

Standard

There are 2 ways to setup the /stats endpoint:

Unsecured stats endpoint

Here’s an example Envoy admin configuration:

admin:
  access_log_path: "/dev/null"
  address:
    socket_address:
      address: 0.0.0.0
      port_value: 8001
Secured stats endpoint

Create a listener/vhost that routes to the admin endpoint (Envoy connecting to itself), but only has a route for /stats; all other routes get a static/error response. Additionally, this allows nice integration with L3 filters for auth, for example.

Here’s an example config from envoy_secured_stats_config.json:

admin:
  access_log_path: /dev/null
  address:
    socket_address:
      protocol: TCP
      address: 127.0.0.1
      port_value: 8081
static_resources:
  listeners:
    - address:
        socket_address:
          protocol: TCP
          address: 0.0.0.0
          port_value: 80
      filter_chains:
        - filters:
            - name: envoy.http_connection_manager
              config:
                codec_type: AUTO
                stat_prefix: ingress_http
                route_config:
                  virtual_hosts:
                    - name: backend
                      domains:
                        - "*"
                      routes:
                        - match:
                            prefix: /stats
                          route:
                            cluster: service_stats
                http_filters:
                  - name: envoy.router
                    config:
  clusters:
    - name: service_stats
      connect_timeout: 0.250s
      type: LOGICAL_DNS
      lb_policy: ROUND_ROBIN
      hosts:
        - socket_address:
            protocol: TCP
            address: 127.0.0.1
            port_value: 8001

Configuration

    Host

    To configure this check for an Agent running on a host:

    Metric collection

    1. Edit the envoy.d/conf.yaml file, in the conf.d/ folder at the root of your Agent’s configuration directory to start collecting your Envoy performance data. See the sample envoy.d/conf.yaml for all available configuration options.

      init_config:

instances:
    ## @param openmetrics_endpoint - string - required
    ## The URL exposing metrics in the OpenMetrics format.
    #
  - openmetrics_endpoint: http://localhost:8001/stats/prometheus

    2. Check if the Datadog Agent can access Envoy’s admin endpoint.

    3. Restart the Agent.

    Log collection

    Available for Agent versions >6.0

    1. Collecting logs is disabled by default in the Datadog Agent, enable it in your datadog.yaml file:

      logs_enabled: true

    2. Next, edit envoy.d/conf.yaml by uncommenting the logs lines at the bottom. Update the logs path with the correct path to your Envoy log files.

      logs:
  - type: file
    path: /var/log/envoy.log
    source: envoy
    service: envoy

    3. Restart the Agent.

    Containerized

    For containerized environments, see the Autodiscovery Integration Templates for guidance on applying the parameters below.

    Metric collection
    ParameterValue
    <INTEGRATION_NAME>envoy
    <INIT_CONFIG>blank or {}
    <INSTANCE_CONFIG>{"openmetrics_endpoint": "http://%%host%%:80/stats/prometheus"}
    Note: The current version of the check (1.26.0+) uses OpenMetrics for metric collection, which requires Python 3. For hosts that are unable to use Python 3, or if you would like to use a legacy version of this check, refer to the following config.
    Log collection

    Available for Agent versions >6.0

    Collecting logs is disabled by default in the Datadog Agent. To enable it, see Kubernetes Log Collection.

    ParameterValue
    <LOG_CONFIG>{"source": "envoy", "service": "<SERVICE_NAME>"}

    Validation

    Run the Agent’s status subcommand and look for envoy under the Checks section.

    Data Collected

    Metrics

    envoy.cluster.assignment_stale.count
    (count)    		[OpenMetrics V2] Number of times the received assignments went stale before new assignments arrived.
    envoy.cluster.assignment_timeout_received.count
    (count)    		[OpenMetrics V2] Total assignments received with endpoint lease information.
    Shown as occurrence
    envoy.cluster.bind_errors.count
    (count)    		[OpenMetrics V2] Total errors binding the socket to the configured source address
    Shown as error
    envoy.cluster.default_total_match.count
    (count)    		[OpenMetrics V2]
    envoy.cluster.ext_authz.denied.count
    (count)    		[OpenMetrics V2] Total responses from the external authorization service denying the traffic
    Shown as response
    envoy.cluster.ext_authz.disabled.count
    (count)    		[OpenMetrics V2] Total requests allowed without calling the external authorization services due to the filter being disabled
    Shown as response
    envoy.cluster.ext_authz.error.count
    (count)    		[OpenMetrics V2] Total errors contacting the external authorization service
    Shown as response
    envoy.cluster.ext_authz.failure_mode_allowed.count
    (count)    		[OpenMetrics V2] Total requests that errored when contacting the external authorization service but were allowed through because of failuremodeallow being set to false
    Shown as response
    envoy.cluster.ext_authz.ok.count
    (count)    		[OpenMetrics V2] Total responses from the external authorization service
    Shown as response
    envoy.cluster.external.upstream_rq.count
    (count)    		[OpenMetrics v2] Total external origin requests
    Shown as request
    envoy.cluster.external.upstream_rq_completed.count
    (count)    		[OpenMetrics v2] Total external origin requests completed
    Shown as request
    envoy.cluster.external.upstream_rq_xx.count
    (count)    		[OpenMetrics v2] External origin aggregate HTTP response codes (e.g., 2xx, 3xx, etc.)
    Shown as request
    envoy.cluster.external.upstream_rq_time.bucket
    (count)    		[OpenMetrics V2] Total time for external request and response (milliseconds)
    Shown as millisecond
    envoy.cluster.external.upstream_rq_time.count
    (count)    		[OpenMetrics V2] Count of external request and response times sampled.
    envoy.cluster.external.upstream_rq_time.sum
    (count)    		[OpenMetrics V2] Total sum of external request and response times.
    Shown as millisecond
    envoy.cluster.http1.dropped_headers_with_underscores.count
    (count)    		[OpenMetrics V2] Total number of dropped headers with names containing underscores. This action is configured by setting the headerswithunderscores_action config setting.
    envoy.cluster.http1.metadata_not_supported_error.count
    (count)    		[OpenMetrics V2] Total number of metadata dropped during HTTP/1 encoding
    envoy.cluster.http1.requests_rejected_with_underscores_in_headers.count
    (count)    		[OpenMetrics V2] Total numbers of rejected requests due to header names containing underscores. This action is configured by setting the headerswithunderscores_action config setting.
    Shown as request
    envoy.cluster.http1.response_flood.count
    (count)    		[OpenMetrics V2] Total number of connections closed due to response flooding
    Shown as connection
    envoy.cluster.http2.dropped_headers_with_underscores.count
    (count)    		[OpenMetrics V2] Total number of dropped headers with names containing underscores. This action is configured by setting the headerswithunderscores_action config setting.
    envoy.cluster.http2.header_overflow.count
    (count)    		[OpenMetrics V2] Total number of connections reset due to the headers being larger than 63 K
    Shown as connection
    envoy.cluster.http2.headers_cb_no_stream.count
    (count)    		[OpenMetrics V2] Total request resets received
    Shown as request
    envoy.cluster.http2.inbound_empty_frames_flood.count
    (count)    		[OpenMetrics V2] Total number of connections terminated for exceeding the limit on consecutive inbound frames with an empty payload and no end stream flag
    Shown as connection
    envoy.cluster.http2.inbound_priority_frames_flood.count
    (count)    		[OpenMetrics V2] Total number of connections terminated for exceeding the limit on inbound frames of type PRIORITY
    Shown as connection
    envoy.cluster.http2.inbound_window_update_frames_flood.count
    (count)    		[OpenMetrics V2]
    envoy.cluster.http2.keepalive_timeout.count
    (count)    		[OpenMetrics V2]
    envoy.cluster.http2.metadata_empty_frames.count
    (count)    		[OpenMetrics V2]
    envoy.cluster.http2.outbound_control_flood.count
    (count)    		[OpenMetrics V2] Total number of connections terminated for exceeding the limit on outbound frames of types PING/SETTINGS/RST_STREAM
    Shown as connection
    envoy.cluster.http2.outbound_flood.count
    (count)    		[OpenMetrics V2] Total number of connections terminated for exceeding the limit on outbound frames of all types
    Shown as connection
    envoy.cluster.http2.pending_send_bytes
    (gauge)    		[OpenMetrics V2]Currently buffered body data in bytes waiting to be written when stream/connection window is opened.
    Shown as byte
    envoy.cluster.http2.requests_rejected_with_underscores_in_headers.count
    (count)    		[OpenMetrics V2] Total numbers of rejected requests due to header names containing underscores. This action is configured by setting the headerswithunderscores_action config setting.
    Shown as request
    envoy.cluster.http2.rx_messaging_error.count
    (count)    		[OpenMetrics V2] Total number of invalid received frames that violated section 8 of the HTTP/2 spec
    Shown as error
    envoy.cluster.http2.rx_reset.count
    (count)    		[OpenMetrics V2] Total number of reset stream frames received by Envoy
    Shown as message
    envoy.cluster.http2.streams_active
    (gauge)    		[OpenMetrics V2] Active streams as observed by the codec
    envoy.cluster.http2.trailers.count
    (count)    		[OpenMetrics V2] Total number of trailers seen on requests coming from downstream
    envoy.cluster.http2.tx_flush_timeout.count
    (count)    		[OpenMetrics V2] Total number of stream idle timeouts waiting for open stream window to flush the remainder of a stream
    envoy.cluster.http2.tx_reset.count
    (count)    		[OpenMetrics V2] Total number of reset stream frames transmitted by Envoy
    envoy.cluster.internal.upstream_rq.count
    (count)    		[OpenMetrics V2] Request time milliseconds
    Shown as millisecond
    envoy.cluster.internal.upstream_rq_completed.count
    (count)    		[OpenMetrics V2] Total upstream requests completed
    envoy.cluster.internal.upstream_rq_xx.count
    (count)    		[OpenMetrics V2] Aggregate HTTP response codes (e.g., 2xx, 3xx, etc.)
    envoy.cluster.lb_healthy_panic.count
    (count)    		[OpenMetrics V2] Total requests load balanced with the load balancer in panic mode
    envoy.cluster.lb_local_cluster_not_ok.count
    (count)    		[OpenMetrics V2] Local host set is not set or it is panic mode for local cluster
    envoy.cluster.lb_recalculate_zone_structures.count
    (count)    		[OpenMetrics V2] The number of times locality aware routing structures are regenerated for fast decisions on upstream locality selection
    envoy.cluster.lb_subsets_created.count
    (count)    		[OpenMetrics V2] Number of subsets created
    envoy.cluster.lb_subsets_fallback.count
    (count)    		[OpenMetrics V2] Number of times the fallback policy was invoke
    envoy.cluster.lb_subsets_fallback_panic.count
    (count)    		[OpenMetrics V2] Number of times the subset panic mode triggered
    envoy.cluster.lb_subsets_removed.count
    (count)    		[OpenMetrics V2] Number of subsets removed due to no hosts
    envoy.cluster.lb_subsets_selected.count
    (count)    		[OpenMetrics V2] Number of times any subset was selected for load balancing
    envoy.cluster.lb_zone_cluster_too_small.count
    (count)    		[OpenMetrics V2] No zone aware routing because of small upstream cluster size
    envoy.cluster.lb_zone_no_capacity_left.count
    (count)    		[OpenMetrics V2] Total number of times ended with random zone selection due to rounding error
    envoy.cluster.lb_zone_number_differs.count
    (count)    		[OpenMetrics V2] Number of zones in local and upstream cluster different
    envoy.cluster.lb_zone_routing_all_directly.count
    (count)    		[OpenMetrics V2] Sending all requests directly to the same zone
    envoy.cluster.lb_zone_routing_cross_zone.count
    (count)    		[OpenMetrics V2] Zone aware routing mode but have to send cross zone
    envoy.cluster.lb_zone_routing_sampled.count
    (count)    		[OpenMetrics V2] Sending some requests to the same zone
    envoy.cluster.membership_change.count
    (count)    		[OpenMetrics V2] Total cluster membership changes
    envoy.cluster.original_dst_host_invalid.count
    (count)    		[OpenMetrics V2] Total number of invalid hosts passed to original destination load balancer
    envoy.cluster.outlier_detection.ejections_detected_consecutive_5xx.count
    (count)    		[OpenMetrics V2] Number of detected consecutive 5xx ejections (even if unenforced)
    envoy.cluster.outlier_detection.ejections_detected_consecutive_gateway_failure.count
    (count)    		[OpenMetrics V2] Number of detected consecutive gateway failure ejections (even if unenforced)
    envoy.cluster.outlier_detection.ejections_detected_consecutive_local_origin_failure.count
    (count)    		[OpenMetrics V2] Number of detected consecutive local origin failure ejections (even if unenforced)
    envoy.cluster.outlier_detection.ejections_detected_failure_percentage.count
    (count)    		[OpenMetrics V2] Number of detected failure percentage ejections (even if unenforced)
    envoy.cluster.outlier_detection.ejections_detected_local_origin_success_rate.count
    (count)    		[OpenMetrics V2] Number of detected local origin success rate ejections (even if unenforced)
    envoy.cluster.outlier_detection.ejections_detected_success_rate.count
    (count)    		[OpenMetrics V2] Number of detected success rate outlier ejections (even if unenforced)
    envoy.cluster.outlier_detection.ejections_enforced_consecutive_5xx.count
    (count)    		[OpenMetrics V2] Number of enforced consecutive 5xx ejections
    envoy.cluster.outlier_detection.ejections_enforced_consecutive_gateway_failure.count
    (count)    		[OpenMetrics V2] Number of enforced consecutive gateway failure ejections
    envoy.cluster.outlier_detection.ejections_enforced_consecutive_local_origin_failure.count
    (count)    		[OpenMetrics V2] Number of enforced consecutive local origin failure ejections
    envoy.cluster.outlier_detection.ejections_enforced_failure_percentage.count
    (count)    		[OpenMetrics V2] Number of enforced failure percentage ejections
    envoy.cluster.outlier_detection.ejections_enforced_local_origin_success_rate.count
    (count)    		[OpenMetrics V2] Number of enforced local origin success rate ejections
    envoy.cluster.outlier_detection.ejections_enforced_success_rate.count
    (count)    		[OpenMetrics V2] Number of enforced success rate outlier ejections
    envoy.cluster.outlier_detection.ejections_overflow.count
    (count)    		[OpenMetrics V2] Number of ejections aborted due to the max ejection %
    envoy.cluster.ratelimit.error.count
    (count)    		[OpenMetrics V2] Total errors contacting the rate limit service
    Shown as response
    envoy.cluster.ratelimit.failure_mode_allowed.count
    (count)    		[OpenMetrics V2] Total requests that errored when contacting the rate limit service but were allowed through because of failuremodedeny being set to false
    Shown as response
    envoy.cluster.ratelimit.ok.count
    (count)    		[OpenMetrics V2] Total under limit responses from the rate limit service
    Shown as response
    envoy.cluster.ratelimit.over_limit.count
    (count)    		[OpenMetrics V2] Total over limit responses from the rate limit service
    Shown as response
    envoy.cluster.retry_or_shadow_abandoned.count
    (count)    		[OpenMetrics V2] Total number of times shadowing or retry buffering was canceled due to buffer limits
    envoy.cluster.update_attempt.count
    (count)    		[OpenMetrics V2] Total attempted cluster membership updates by service discovery
    envoy.cluster.update_empty.count
    (count)    		[OpenMetrics V2] Total cluster membership updates ending with empty cluster load assignment and continuing with previous config
    envoy.cluster.update_failure.count
    (count)    		[OpenMetrics V2] Total failed cluster membership updates by service discovery
    envoy.cluster.update_no_rebuild.count
    (count)    		[OpenMetrics V2] Total successful cluster membership updates that didn't result in any cluster load balancing structure rebuild
    envoy.cluster.update_success.count
    (count)    		[OpenMetrics V2] Total successful cluster membership updates by service discover
    envoy.cluster.upstream_cx.count
    (count)    		[OpenMetrics V2] Count of connections
    Shown as connection
    envoy.cluster.upstream_cx_close_notify.count
    (count)    		[OpenMetrics V2] Total connections closed via HTTP/1.1 connection close header or HTTP/2 or HTTP/3 GOAWAY
    envoy.cluster.upstream_cx_connect_attempts_exceeded.count
    (count)    		[OpenMetrics V2] Total consecutive connection failures exceeding configured connection attempts
    envoy.cluster.upstream_cx_connect_fail.count
    (count)    		[OpenMetrics V2] Total connection failures
    envoy.cluster.upstream_cx_connect_ms.bucket
    (count)    		[OpenMetrics V2] Connection establishment milliseconds
    Shown as millisecond
    envoy.cluster.upstream_cx_connect_ms.count
    (count)    		[OpenMetrics V2] Total count of connection establishments
    envoy.cluster.upstream_cx_connect_ms.sum
    (count)    		[OpenMetrics V2] Total sum of connection establishments
    Shown as millisecond
    envoy.cluster.upstream_cx_connect_timeout.count
    (count)    		[OpenMetrics V2] Total connection connect timeouts
    envoy.cluster.upstream_cx_destroy.count
    (count)    		[OpenMetrics V2] Total destroyed connections
    envoy.cluster.upstream_cx_destroy_local.count
    (count)    		[OpenMetrics V2] Total connections destroyed locally
    envoy.cluster.upstream_cx_destroy_local_with_active_rq.count
    (count)    		[OpenMetrics V2] Total connections destroyed locally with 1+ active request
    envoy.cluster.upstream_cx_destroy_remote_with_active_rq.count
    (count)    		[OpenMetrics V2] Total connections destroyed remotely with 1+ active request
    envoy.cluster.upstream_cx_destroy_remote.count
    (count)    		[OpenMetrics V2] Total connections destroyed remotely
    envoy.cluster.upstream_cx_destroy_with_active_rq.count
    (count)    		[OpenMetrics V2] Total connections destroyed with 1+ active request
    envoy.cluster.upstream_cx_http1.count
    (count)    		[OpenMetrics V2] Count of HTTP/1.1 connections
    Shown as connection
    envoy.cluster.upstream_cx_http2.count
    (count)    		[OpenMetrics V2] Count of HTTP/2 connections
    Shown as connection
    envoy.cluster.upstream_cx_http3.count
    (count)    		[OpenMetrics V2] Count of HTTP/3 connections
    Shown as connection
    envoy.cluster.upstream_cx_idle_timeout.count
    (count)    		[OpenMetrics V2] Total connection idle timeouts
    envoy.cluster.upstream_cx_length_ms.bucket
    (count)    		[OpenMetrics V2] Connection length milliseconds
    Shown as millisecond
    envoy.cluster.upstream_cx_length_ms.count
    (count)    		[OpenMetrics V2] Count of connection length samples
    envoy.cluster.upstream_cx_length_ms.sum
    (count)    		[OpenMetrics V2] Total sum of connection length
    Shown as millisecond
    envoy.cluster.upstream_cx_max_requests.count
    (count)    		[OpenMetrics V2] Total connections closed due to maximum requests
    envoy.cluster.upstream_cx_none_healthy.count
    (count)    		[OpenMetrics V2] Total times connection not established due to no healthy hosts
    envoy.cluster.upstream_cx_overflow.count
    (count)    		[OpenMetrics V2] Total times that the cluster's connection circuit breaker overflowed
    envoy.cluster.upstream_cx_pool_overflow.count
    (count)    		[OpenMetrics V2] Total times that the cluster's connection pool circuit breaker overflowed
    envoy.cluster.upstream_cx_protocol_error.count
    (count)    		[OpenMetrics V2] Total connection protocol errors
    envoy.cluster.upstream_cx_rx_bytes.count
    (count)    		[OpenMetrics V2] Count of received connection bytes
    Shown as byte
    envoy.cluster.upstream_cx_tx_bytes.count
    (count)    		[OpenMetrics V2] Count of sent connection bytes
    Shown as byte
    envoy.cluster.upstream_flow_control_backed_up.count
    (count)    		[OpenMetrics V2] Count of times the upstream connection backed up and paused reads from downstream
    Shown as occurrence
    envoy.cluster.upstream_flow_control_drained.count
    (count)    		[OpenMetrics V2] Count of times the upstream connection drained and resumed reads from downstream
    Shown as occurrence
    envoy.cluster.upstream_flow_control_paused_reading.count
    (count)    		[OpenMetrics V2] Count of times flow control paused reading from upstream
    Shown as occurrence
    envoy.cluster.upstream_internal_redirect_failed.count
    (count)    		[OpenMetrics V2] Count of times failed internal redirects resulted in redirects being passed downstream
    envoy.cluster.upstream_internal_redirect_succeeded.count
    (count)    		[Openmetrics V2] Count of times internal redirects resulted in a second upstream request
    envoy.cluster.upstream_rq.count
    (count)    		[OpenMetrics V2] Specific HTTP response codes (e.g., 201, 302, etc.)
    envoy.cluster.upstream_rq_cancelled.count
    (count)    		[OpenMetrics V2] Total requests cancelled before obtaining a connection pool connection
    envoy.cluster.upstream_rq_completed.count
    (count)    		[OpenMetrics V2] Total upstream requests completed
    envoy.cluster.upstream_rq_maintenance_mode.count
    (count)    		[OpenMetrics V2] Total requests that resulted in an immediate 503 due to maintenance mode
    envoy.cluster.upstream_rq_max_duration_reached.count
    (count)    		[OpenMetrics V2] Total requests closed due to max duration reached
    envoy.cluster.upstream_rq_pending.count
    (count)    		[Openmetrics V2] Count of requests pending a connection pool connection
    Shown as request
    envoy.cluster.upstream_rq_pending_failure_eject.count
    (count)    		[OpenMetrics V2] Total requests that were failed due to a connection pool connection failure or remote connection termination
    envoy.cluster.upstream_rq_pending_overflow.count
    (count)    		[OpenMetrics V2] Total requests that overflowed connection pool or requests (mainly for HTTP/2 and above) circuit breaking and were failed
    envoy.cluster.upstream_rq_per_try_timeout.count
    (count)    		[OpenMetrics V2] Total requests that hit the per try timeout (except when request hedging is enabled)
    envoy.cluster.upstream_rq_retry.count
    (count)    		[OpenMetrics V2] Total request retries
    envoy.cluster.upstream_rq_retry_backoff_exponential.count
    (count)    		[OpenMetrics V2] Total retries using the exponential backoff strategy
    envoy.cluster.upstream_rq_retry_backoff_ratelimited.count
    (count)    		[OpenMetrics V2] Total retries using the ratelimited backoff strategy
    envoy.cluster.upstream_rq_retry_limit_exceeded.count
    (count)    		[OpenMetrics V2] Total requests not retried due to exceeding the configured number of maximum retries
    envoy.cluster.upstream_rq_retry_overflow.count
    (count)    		[OpenMetrics V2] Total requests not retried due to circuit breaking or exceeding the retry budget
    envoy.cluster.upstream_rq_retry_success.count
    (count)    		[OpenMetrics V2] Total request retry successes
    envoy.cluster.upstream_rq_rx_reset.count
    (count)    		[OpenMetrics V2] Total requests that were reset remotely
    envoy.cluster.upstream_rq_time.bucket
    (count)    		[OpenMetrics v2] Count of requests in the histogram bucket
    Shown as request
    envoy.cluster.upstream_rq_time.count
    (count)    		[OpenMetrics v2] Total count of requests
    Shown as request
    envoy.cluster.upstream_rq_time.sum
    (count)    		[OpenMetrics v2] Sum of all the requests durations in milliseconds
    Shown as millisecond
    envoy.cluster.upstream_rq_timeout.count
    (count)    		[OpenMetrics V2] Total requests that timed out waiting for a response
    envoy.cluster.upstream_rq_tx_reset.count
    (count)    		[OpenMetrics V2] Total requests that were reset locally
    envoy.cluster.upstream_rq_xx.count
    (count)    		[OpenMetrics V2] Aggregate HTTP response codes (e.g., 2xx, 3xx, etc.)
    envoy.cluster_manager.cds.control_plane.rate_limit_enforced.count
    (count)    		[OpenMetrics V2] Total number of times rate limit was enforced for management server requests
    Shown as occurrence
    envoy.cluster_manager.cds.init_fetch_timeout.count
    (count)    		[OpenMetrics V2] Total initial fetch timeouts
    envoy.cluster_manager.cds.update_attempt.count
    (count)    		[OpenMetrics V2] Total attempted cluster membership updates by service discovery
    envoy.cluster_manager.cds.update_duration.bucket
    (count)    		[OpenMetrics V2] Amount of time spent updating configs
    envoy.cluster_manager.cds.update_duration.count
    (count)    		[OpenMetrics V2] Count of time spent updating configs samples.
    envoy.cluster_manager.cds.update_duration.sum
    (count)    		[OpenMetrics V2] Total sum of time spent updating configs
    envoy.cluster_manager.cds.update_failure.count
    (count)    		[OpenMetrics V2] Total failed cluster membership updates by service discovery
    envoy.cluster_manager.cds.update_rejected.count
    (count)    		[OpenMetrics V2] Total API fetches that failed because of schema/validation errors
    envoy.cluster_manager.cds.update_success.count
    (count)    		[OpenMetrics V2] Total successful cluster membership updates by service discovery
    envoy.cluster_manager.cluster_added.count
    (count)    		[OpenMetrics V2] Total clusters added (either via static config or CDS)
    envoy.cluster_manager.cluster_modified.count
    (count)    		[OpenMetrics V2] Total clusters modified (via CDS)
    envoy.cluster_manager.cluster_removed.count
    (count)    		[OpenMetrics V2] Total clusters removed (via CDS)
    envoy.cluster_manager.cluster_updated.count
    (count)    		[OpenMetrics V2] Total cluster updates
    envoy.cluster_manager.custer_updated_via_merge.count
    (count)    		[OpenMetrics V2]
    envoy.cluster_manager.update_merge_cancelled.count
    (count)    		[OpenMetrics V2] Total merged updates that got cancelled and delivered early
    envoy.cluster_manager.update_out_of_merge_window.count
    (count)    		[OpenMetrics V2] Total updates which arrived out of a merge window
    envoy.connection_limit.active_connections
    (gauge)    		[OpenMetrics V2] Number of currently active connections in the scope of this network filter chain
    envoy.connection_limit.limited_connections.count
    (count)    		[OpenMetrics V2] Total connections that have been rejected due to connection limit exceeded
    envoy.connection_limit.limited_connections
    (count)    		[Legacy] Total connections that have been rejected due to connection limit exceeded
    envoy.filesystem.flushed_by_timer.count
    (count)    		[OpenMetrics V2]
    envoy.filesystem.reopen_failed.count
    (count)    		[OpenMetrics V2]
    envoy.filesystem.write_buffered.count
    (count)    		[OpenMetrics V2]
    envoy.filesystem.write_completed.count
    (count)    		[OpenMetrics V2]
    envoy.filesystem.write_failed.count
    (count)    		[OpenMetrics V2]
    envoy.http.downstream_cx.count
    (count)    		[OpenMetrics V2] Count of connections
    Shown as connection
    envoy.http.downstream_cx_delayed_close_timeout.count
    (count)    		[OpenMetrics V2]
    envoy.http.downstream_cx_destroy.count
    (count)    		[OpenMetrics V2]
    envoy.http.downstream_cx_destroy_active_rq.count
    (count)    		[OpenMetrics V2] Total connections destroyed with 1+ active request
    envoy.http.downstream_cx_destroy_local.count
    (count)    		[OpenMetrics V2] Total connections destroyed due to local close
    envoy.http.downstream_cx_destroy_local_active_rq.count
    (count)    		[OpenMetrics V2] Total connections destroyed locally with 1+ active request
    envoy.http.downstream_cx_destroy_remote.count
    (count)    		[OpenMetrics V2] Total connections destroyed due to remote close
    envoy.http.downstream_cx_destroy_remote_active_rq.count
    (count)    		[OpenMetrics V2] Total connections destroyed remotely with 1+ active request
    envoy.http.downstream_cx_drain_close.count
    (count)    		[OpenMetrics V2] Total connections closed due to draining
    envoy.http.downstream_cx_http1.count
    (count)    		[OpenMetrics V2] Count of HTTP/1.1 connections
    Shown as connection
    envoy.http.downstream_cx_http2.count
    (count)    		[OpenMetrics V2] Count of HTTP/2 connections
    Shown as connection
    envoy.http.downstream_cx_http3.count
    (count)    		[OpenMetrics V2] Count of HTTP/3 connections
    Shown as connection
    envoy.http.downstream_cx_idle_timeout.count
    (count)    		[OpenMetrics V2] Total connections closed due to idle timeout
    envoy.http.downstream_cx_max_duration_reached.count
    (count)    		[OpenMetrics V2] Total connections closed due to max connection duration
    envoy.http.downstream_cx_overload_disable_keepalive.count
    (count)    		[OpenMetrics V2] Total connections for which HTTP 1.x keepalive has been disabled due to Envoy overload
    envoy.http.downstream_cx_protocol_error.count
    (count)    		[OpenMetrics V2] Total protocol errors
    envoy.http.downstream_cx_rx_bytes.count
    (count)    		[OpenMetrics V2] Count of bytes received
    Shown as byte
    envoy.http.downstream_cx_ssl.count
    (count)    		[OpenMetrics V2] Count of TLS connections
    Shown as connection
    envoy.http.downstream_cx_tx_bytes.count
    (count)    		[OpenMetrics V2] Count of bytes sent
    Shown as byte
    envoy.http.downstream_cx_upgrades.count
    (count)    		[OpenMetrics V2] Count of successfully upgraded connections
    envoy.http.downstream_cx_upgrades_active
    (gauge)    		[OpenMetrics V2] Total active upgraded connections. These are also counted as active http1/http2 connections.
    envoy.http.downstream_flow_control_paused_reading.count
    (count)    		[OpenMetrics V2] Count of times reads were disabled due to flow control
    Shown as occurrence
    envoy.http.downstream_flow_control_resumed_reading.count
    (count)    		[OpenMetrics V2] Count of times reads were enabled on the connection due to flow control
    Shown as occurrence
    envoy.http.downstream_rq.count
    (count)    		[OpenMetrics V2] Count of requests
    Shown as request
    envoy.http.downstream_rq_completed.count
    (count)    		[OpenMetrics V2] Total requests that resulted in a response (e.g. does not include aborted requests)
    Shown as request
    envoy.http.downstream_rq_failed_path_normalization.count
    (count)    		[OpenMetrics V2] Total requests redirected due to different original and normalized URL paths or when path normalization failed. This action is configured by setting the pathwithescapedslashesaction config option.
    envoy.http.downstream_rq_header_timeout.count
    (count)    		[OpenMetrics V2]
    envoy.http.downstream_rq_http1.count
    (count)    		[OpenMetrics V2] Count of HTTP/1.1 requests
    Shown as request
    envoy.http.downstream_rq_http2.count
    (count)    		[OpenMetrics V2] Count of HTTP/2 requests
    Shown as request
    envoy.http.downstream_rq_http3.count
    (count)    		[OpenMetrics V2] Count of HTTP/3 requests
    Shown as request
    envoy.http.downstream_rq_idle_timeout.count
    (count)    		[OpenMetrics V2] Total requests closed due to idle timeout
    envoy.http.downstream_rq_max_duration_reached.count
    (count)    		[OpenMetrics V2] Total requests closed due to max duration reached
    envoy.http.downstream_rq_non_relative_path.count
    (count)    		[OpenMetrics V2] Total requests with a non-relative HTTP path
    envoy.http.downstream_rq_overload_close.count
    (count)    		[OpenMetrics V2] Total requests closed due to Envoy overload
    envoy.http.downstream_rq_redirected_with_normalized_path.count
    (count)    		[OpenMetrics V2] Total requests redirected due to different original and normalized URL paths. This action is configured by setting the pathwithescapedslashesaction config option.
    envoy.http.downstream_rq_response_before_rq_complete.count
    (count)    		[OpenMetrics V2] Total responses sent before the request was complete
    envoy.http.downstream_rq_rx_reset.count
    (count)    		[OpenMetrics V2] Total request resets received
    envoy.http.downstream_rq_time.bucket
    (count)    		[OpenMetrics V2] Total time for request and response (milliseconds)
    Shown as millisecond
    envoy.http.downstream_rq_time.count
    (count)    		[OpenMetrics V2] Count of request and response times sampled.
    envoy.http.downstream_rq_time.sum
    (count)    		[OpenMetrics V2] Total sum of request and response times.
    Shown as millisecond
    envoy.http.downstream_rq_timeout.count
    (count)    		[OpenMetrics V2] Total requests closed due to a timeout on the request path
    envoy.http.downstream_rq_too_large.count
    (count)    		[OpenMetrics V2] Total requests resulting in a 413 due to buffering an overly large body
    envoy.http.downstream_rq_tx_reset.count
    (count)    		[OpenMetrics V2] Total request resets sent
    envoy.http.downstream_rq_ws_on_non_ws_route.count
    (count)    		[OpenMetrics V2] Total upgrade requests rejected by non upgrade routes. This now applies both to WebSocket and non-WebSocket upgrades
    envoy.http.downstream_rq_xx.count
    (count)    		[OpenMetrics V2] Aggregate HTTP response codes (e.g., 2xx, 3xx, etc.)
    envoy.http.no_cluster.count
    (count)    		[OpenMetrics V2]
    envoy.http.no_route.count
    (count)    		[OpenMetrics V2]
    envoy.http.passthrough_internal_redirect_bad_location.count
    (count)    		[OpenMetrics V2]
    envoy.http.passthrough_internal_redirect_no_route.count
    (count)    		[OpenMetrics V2]
    envoy.http.passthrough_internal_redirect_predicate.count
    (count)    		[OpenMetrics V2]
    envoy.http.passthrough_internal_redirect_too_many_redirects.count
    (count)    		[OpenMetrics V2]
    envoy.http.passthrough_internal_redirect_unsafe_scheme.count
    (count)    		[OpenMetrics V2]
    envoy.http.rq.count
    (count)    		[OpenMetrics V2] Count of routed requests
    Shown as request
    envoy.http.rq_direct_response.count
    (count)    		[OpenMetrics V2]
    envoy.http.rq_redirect.count
    (count)    		[OpenMetrics V2]
    envoy.http.rq_reset_after_downstream_response_started.count
    (count)    		[OpenMetrics V2]
    envoy.http.rs_too_large.count
    (count)    		[OpenMetrics V2] Total response errors due to buffering an overly large body
    envoy.http.tracing.client_enabled.count
    (count)    		[OpenMetrics V2] Total number of traceable decisions by request header x-envoy-force-trace
    envoy.http.tracing.health_check.count
    (count)    		[OpenMetrics V2] Total number of non-traceable decisions by health check
    envoy.http.tracing.not_traceable.count
    (count)    		[OpenMetrics V2] Total number of non-traceable decisions by request id
    envoy.http.tracing.random_sampling.count
    (count)    		[OpenMetrics V2] Total number of traceable decisions by random sampling
    envoy.http.tracing.service_forced.count
    (count)    		[OpenMetrics V2] Total number of traceable decisions by server runtime flag tracing.global_enabled
    envoy.http.downstream_cx_length_ms.bucket
    (count)    		[OpenMetrics V2] Connection length milliseconds
    Shown as millisecond
    envoy.http.downstream_cx_length_ms.count
    (count)    		[OpenMetrics V2] Count of Connection length milliseconds samples
    envoy.http.downstream_cx_length_ms.sum
    (count)    		[OpenMetrics V2] Sum of Connection length milliseconds
    Shown as millisecond
    envoy.listener.admin.downstream_cx.count
    (count)    		[OpenMetrics V2] Total connections
    envoy.listener.admin.downstream_cx_active
    (gauge)    		[OpenMetrics V2] Total active connections admin.
    envoy.listener.admin.downstream_cx_destroy.count
    (count)    		[OpenMetrics V2] Total connections destroyed admin.
    envoy.listener.admin.downstream_cx_length_ms.bucket
    (count)    		[OpenMetrics V2] Admin connection length milliseconds
    Shown as millisecond
    envoy.listener.admin.downstream_cx_length_ms.count
    (count)    		[OpenMetrics V2] Count of admin connection length samples.
    envoy.listener.admin.downstream_cx_length_ms.sum
    (count)    		[OpenMetrics V2] Total sum of admin connection length.
    Shown as millisecond
    envoy.listener.admin.downstream_cx_overflow.count
    (count)    		[OpenMetrics V2]
    envoy.listener.admin.downstream_cx_overload_reject.count
    (count)    		[OpenMetrics V2]
    envoy.listener.admin.downstream_global_cx_overflow.count
    (count)    		[OpenMetrics V2]
    envoy.listener.admin.downstream_pre_cx_active
    (gauge)    		[OpenMetrics V2]
    envoy.listener.admin.downstream_pre_cx_timeout.count
    (count)    		[OpenMetrics V2]
    envoy.listener.admin.http.downstream_rq_completed.count
    (count)    		[OpenMetrics V2] Total requests that resulted in a response (e.g. does not include aborted requests)
    Shown as request
    envoy.listener.admin.http.downstream_rq_xx.count
    (count)    		[OpenMetrics V2] Aggregate HTTP response codes (e.g., 2xx, 3xx, etc.)
    envoy.listener.admin.no_filter_chain_match.count
    (count)    		[OpenMetrics V2]
    envoy.listener.downstream_cx.count
    (count)    		[OpenMetrics V2]
    envoy.listener.downstream_cx_destroy.count
    (count)    		[OpenMetrics V2] Total connections destroyed
    envoy.listener.downstream_cx_length_ms.bucket
    (count)    		[OpenMetrics V2] Connection length milliseconds
    Shown as millisecond
    envoy.listener.downstream_cx_length_ms.count
    (count)    		[OpenMetrics V2] Count of Connection length milliseconds samples
    envoy.listener.downstream_cx_length_ms.sum
    (count)    		[OpenMetrics V2] Sum of Connection length milliseconds
    Shown as millisecond
    envoy.listener.downstream_cx_overflow.count
    (count)    		[OpenMetrics V2]
    envoy.listener.downstream_cx_overload_reject.count
    (count)    		[OpenMetrics V2]
    envoy.listener.downstream_global_cx_overflow.count
    (count)    		[OpenMetrics V2]
    envoy.listener.downstream_pre_cx_timeout.count
    (count)    		[OpenMetrics V2]
    envoy.listener.http.downstream_rq_completed.count
    (count)    		[OpenMetrics V2] Total HTTP requests that resulted in a response (e.g. does not include aborted requests)
    Shown as request
    envoy.listener.http.downstream_rq_xx.count
    (count)    		[OpenMetrics V2] Aggregate HTTP response codes (e.g., 2xx, 3xx, etc.)
    Shown as response
    envoy.listener.no_filter_chain_match.count
    (count)    		[OpenMetrics V2]
    envoy.listener_manager.lds.control_plane.rate_limit_enforced.count
    (count)    		[OpenMetrics V2]
    envoy.listener_manager.lds.init_fetch_timeout.count
    (count)    		[OpenMetrics V2]
    envoy.listener_manager.lds.update_attempt.count
    (count)    		[OpenMetrics V2] Total attempted cluster membership updates by service discovery
    envoy.listener_manager.lds.update_duration.bucket
    (count)    		[OpenMetrics V2] Amount of time spent updating configs
    envoy.listener_manager.lds.update_duration.count
    (count)    		[OpenMetrics V2] Count of Amount of time spent updating configs
    envoy.listener_manager.lds.update_duration.sum
    (count)    		[OpenMetrics V2] Sum of Amount of time spent updating configs
    envoy.listener_manager.lds.update_failure.count
    (count)    		[OpenMetrics V2] Total failed cluster membership updates by service discovery
    envoy.listener_manager.lds.update_rejected.count
    (count)    		[OpenMetrics V2] Total rejected cluster membership updates by service discovery
    envoy.listener_manager.lds.update_success.count
    (count)    		[OpenMetrics V2] Total successful cluster membership updates by service discovery
    envoy.listener_manager.listener_added.count
    (count)    		[OpenMetrics V2]
    envoy.listener_manager.listener_create_failure.count
    (count)    		[OpenMetrics V2]
    envoy.listener_manager.listener_create_success.count
    (count)    		[OpenMetrics V2]
    envoy.listener_manager.listener_in_place_updated.count
    (count)    		[OpenMetrics V2]
    envoy.listener_manager.listener_modified.count
    (count)    		[OpenMetrics V2]
    envoy.listener_manager.listener_removed.count
    (count)    		[OpenMetrics V2]
    envoy.listener_manager.listener_stopped.count
    (count)    		[OpenMetrics V2]
    envoy.listener_manager.total_filter_chains_draining
    (gauge)    		[OpenMetrics V2]
    envoy.listener_manager.workers_started
    (gauge)    		[OpenMetrics V2]
    envoy.runtime.deprecated_feature_seen_since_process_start
    (gauge)    		[OpenMetrics V2]
    envoy.runtime.deprecated_feature_use.count
    (count)    		[OpenMetrics V2]
    envoy.runtime.load_error.count
    (count)    		[OpenMetrics V2]
    envoy.runtime.load_success.count
    (count)    		[OpenMetrics V2]
    envoy.runtime.override_dir_exists.count
    (count)    		[OpenMetrics V2]
    envoy.runtime.override_dir_not_exists.count
    (count)    		[OpenMetrics V2]
    envoy.server.compilation_settings_fips_mode
    (gauge)    		[OpenMetrics V2]
    envoy.server.debug_assertion_failures.count
    (count)    		[OpenMetrics V2]
    envoy.server.dynamic_unknown_fields.count
    (count)    		[OpenMetrics V2]
    envoy.server.envoy_bug_failure.count
    (count)    		[OpenMetrics V2]
    envoy.server.hot_restart_generation
    (gauge)    		[OpenMetrics V2]
    envoy.server.initialization_time_ms.bucket
    (count)    		[OpenMetrics V2] server initialization time.
    Shown as millisecond
    envoy.server.initialization_time_ms.count
    (count)    		[OpenMetrics V2] count of server initilization time samples.
    envoy.server.initialization_time_ms.sum
    (count)    		[OpenMetrics V2] sum of server initialization time.
    envoy.server.memory_physical_size
    (gauge)    		[OpenMetrics V2]
    envoy.server.seconds_until_first_ocsp_response_expiring
    (gauge)    		[OpenMetrics V2]
    envoy.server.static_unknown_fields.count
    (count)    		[OpenMetrics V2]
    envoy.server.stats_recent_lookups
    (gauge)    		[OpenMetrics V2]
    envoy.server.watchdog_mega_miss.count
    (count)    		[OpenMetrics V2] Number of server mega misses
    envoy.server.watchdog_miss.count
    (count)    		[OpenMetrics V2] Number of server standard misses
    envoy.server.dropped_stat_flushes.count
    (count)    		[OpenMetrics V2] Number of dropped stat flushes
    envoy.vhost.vcluster.upstream_rq.count
    (count)    		[OpenMetrics V2] Count of requests initiated by the router to the upstream
    Shown as request
    envoy.vhost.vcluster.upstream_rq_retry.count
    (count)    		[OpenMetrics V2] Total request retries
    Shown as request
    envoy.vhost.vcluster.upstream_rq_retry_limit_exceeded.count
    (count)    		[OpenMetrics V2] Total requests not retried due to exceeding the configured number of maximum retries
    Shown as request
    envoy.vhost.vcluster.upstream_rq_retry_overflow.count
    (count)    		[OpenMetrics V2] Total requests not retried due to circuit breaking or exceeding the retry budget
    Shown as request
    envoy.vhost.vcluster.upstream_rq_retry_success.count
    (count)    		[OpenMetrics V2] Total request retry successes
    Shown as request
    envoy.vhost.vcluster.upstream_rq_timeout.count
    (count)    		[OpenMetrics V2] Total requests that timed out waiting for a response
    Shown as request
    envoy.watchdog_mega_miss.count
    (count)    		[OpenMetrics V2] Number of mega misses
    envoy.watchdog_miss.count
    (count)    		[OpenMetrics V2] Number of standard misses
    envoy.workers.watchdog_mega_miss.count
    (count)    		[OpenMetrics V2] Number of mega misses
    envoy.workers.watchdog_miss.count
    (count)    		[OpenMetrics V2] Number of standard misses
    envoy.runtime.load_error
    (count)    		[Legacy] Total number of load attempts that resulted in an error
    Shown as error
    envoy.runtime.override_dir_not_exists
    (count)    		[Legacy] Total number of loads that did not use an override directory
    Shown as occurrence
    envoy.runtime.override_dir_exists
    (count)    		[Legacy] Total number of loads that did use an override directory
    Shown as occurrence
    envoy.runtime.load_success
    (count)    		[Legacy] Total number of load attempts that were successful
    Shown as success
    envoy.runtime.num_keys
    (gauge)    		[Legacy] Number of keys currently loaded
    Shown as location
    envoy.runtime.admin_overrides_active
    (gauge)    		[Legacy] 1 if any admin overrides are active otherwise 0
    envoy.runtime.deprecated_feature_use
    (count)    		[Legacy] Total number of times deprecated features were used
    envoy.runtime.num_layers
    (gauge)    		[Legacy] Number of layers currently active (without loading errors)
    envoy.control_plane.connected_state
    (gauge)    		[Legacy] A boolean (1 for connected and 0 for disconnected) that indicates the current connection state with management server
    Shown as connection
    envoy.control_plane.pending_requests
    (gauge)    		[Legacy] Total number of pending requests when the rate limit was enforced
    Shown as request
    envoy.control_plane.rate_limit_enforced
    (count)    		[Legacy] Total number of times rate limit was enforced for management server requests
    Shown as occurrence
    envoy.cluster_manager.cds.config_reload
    (count)    		[Legacy] Total API fetches that resulted in a config reload due to a different config
    Shown as request
    envoy.cluster_manager.cds.update_attempt
    (count)    		[Legacy] Total API fetches attempted
    Shown as request
    envoy.cluster_manager.cds.update_success
    (count)    		[Legacy] Total API fetches completed successfully
    Shown as request
    envoy.cluster_manager.cds.update_failure
    (count)    		[Legacy] Total API fetches that failed because of network errors
    Shown as request
    envoy.cluster_manager.cds.update_rejected
    (count)    		[Legacy] Total API fetches that failed because of schema/validation errors
    Shown as request
    envoy.cluster_manager.cds.update_time
    (gauge)    		[Legacy] Timestamp of the last successful API fetch attempt as milliseconds since the epoch
    Shown as millisecond
    envoy.cluster_manager.cds.version
    (gauge)    		[Legacy] Hash of the contents from the last successful API fetch
    Shown as item
    envoy.cluster_manager.cds.control_plane.connected_state
    (gauge)    		[Legacy] A boolean (1 for connected and 0 for disconnected) that indicates the current connection state with management server
    Shown as connection
    envoy.cluster_manager.cds.control_plane.pending_requests
    (gauge)    		[Legacy] Total number of pending requests when the rate limit was enforced
    Shown as request
    envoy.cluster_manager.cds.control_plane.rate_limit_enforced
    (count)    		[Legacy] Total number of times rate limit was enforced for management server requests
    Shown as occurrence
    envoy.http.no_route
    (count)    		[Legacy] Total requests that had no route and resulted in a 404
    Shown as request
    envoy.http.no_cluster
    (count)    		[Legacy] Total requests in which the target cluster did not exist and resulted in a 404
    Shown as request
    envoy.http.rq_redirect
    (count)    		[Legacy] Total requests that resulted in a redirect response
    Shown as request
    envoy.http.rq_total
    (count)    		[Legacy] Total routed requests
    Shown as request
    envoy.vhost.vcluster.upstream_rq_1xx
    (count)    		[Legacy] Aggregate HTTP 1xx response codes
    Shown as response
    envoy.vhost.vcluster.upstream_rq_2xx
    (count)    		[Legacy] Aggregate HTTP 2xx response codes
    Shown as response
    envoy.vhost.vcluster.upstream_rq_3xx
    (count)    		[Legacy] Aggregate HTTP 3xx response codes
    Shown as response
    envoy.vhost.vcluster.upstream_rq_4xx
    (count)    		[Legacy] Aggregate HTTP 4xx response codes
    Shown as response
    envoy.vhost.vcluster.upstream_rq_5xx
    (count)    		[Legacy] Aggregate HTTP 5xx response codes
    Shown as response
    envoy.vhost.vcluster.upstream_rq_retry
    (count)    		[Legacy] Total request retries
    Shown as request
    envoy.vhost.vcluster.upstream_rq_retry_limit_exceeded
    (count)    		[Legacy] Total requests not retried due to exceeding the configured number of maximum retries
    Shown as request
    envoy.vhost.vcluster.upstream_rq_retry_overflow
    (count)    		[Legacy] Total requests not retried due to circuit breaking or exceeding the retry budgets
    Shown as request
    envoy.vhost.vcluster.upstream_rq_retry_success
    (count)    		[Legacy] Total request retry successes
    Shown as request
    envoy.vhost.vcluster.upstream_rq_timeout
    (count)    		[Legacy] Total requests that timed out waiting for a response
    Shown as request
    envoy.vhost.vcluster.upstream_rq_total
    (count)    		[Legacy] Total requests initiated by the router to the upstream
    Shown as request
    envoy.cluster.ratelimit.ok
    (count)    		[Legacy] Total under limit responses from the rate limit service
    Shown as response
    envoy.cluster.ratelimit.error
    (count)    		[Legacy] Total errors contacting the rate limit service
    Shown as response
    envoy.cluster.ratelimit.over_limit
    (count)    		[Legacy] Total over limit responses from the rate limit service
    Shown as response
    envoy.cluster.ratelimit.failure_mode_allowed
    (count)    		[Legacy] Total requests that errored when contacting the rate limit service but were allowed through because of failuremodedeny being set to false
    Shown as response
    envoy.cluster.ext_authz.ok
    (count)    		[Legacy] Total responses from the external authorization service
    Shown as response
    envoy.cluster.ext_authz.error
    (count)    		[Legacy] Total errors contacting the external authorization service
    Shown as response
    envoy.cluster.ext_authz.denied
    (count)    		[Legacy] Total responses from the external authorization service denying the traffic
    Shown as response
    envoy.cluster.ext_authz.disabled
    (count)    		[Legacy] Total requests allowed without calling the external authorization services due to the filter being disabled
    Shown as response
    envoy.cluster.ext_authz.failure_mode_allowed
    (count)    		[Legacy] Total requests that errored when contacting the external authorization service but were allowed through because of failuremodeallow being set to false
    Shown as response
    envoy.http.ip_tagging.hit
    (count)    		[Legacy] Total number of requests that have the tag_name tag applied to it
    Shown as request
    envoy.http.ip_tagging.no_hit
    (count)    		[Legacy] Total number of requests with no applicable IP tags
    Shown as request
    envoy.http.ip_tagging.total
    (count)    		[Legacy] Total number of requests the IP Tagging Filter operated on
    Shown as request
    envoy.cluster.grpc.success
    (count)    		[Legacy] Total successful service/method calls
    Shown as operation
    envoy.cluster.grpc.failure
    (count)    		[Legacy] Total failed service/method calls
    Shown as operation
    envoy.cluster.grpc.total
    (count)    		[Legacy] Total service/method calls
    Shown as operation
    envoy.http.dynamodb.operation.upstream_rq_total
    (count)    		[Legacy] Total number of requests with operation_name tag
    Shown as request
    envoy.http.dynamodb.table.upstream_rq_total
    (count)    		[Legacy] Total number of requests on table_name tag table
    Shown as request
    envoy.http.dynamodb.error
    (count)    		[Legacy] Total number of specific errortype tag for a given tablename tag
    Shown as error
    envoy.http.dynamodb.error.BatchFailureUnprocessedKeys
    (count)    		[Legacy] Total number of partial batch failures for a given table_name tag
    Shown as error
    envoy.http.buffer.rq_timeout
    (count)    		[Legacy] Total requests that timed out waiting for a full request
    Shown as timeout
    envoy.http.rds.config_reload
    (count)    		[Legacy] Total API fetches that resulted in a config reload due to a different config
    Shown as request
    envoy.http.rds.update_attempt
    (count)    		[Legacy] Total API fetches attempted
    Shown as request
    envoy.http.rds.update_success
    (count)    		[Legacy] Total API fetches completed successfully
    Shown as request
    envoy.http.rds.update_failure
    (count)    		[Legacy] Total API fetches that failed because of network errors
    Shown as request
    envoy.http.rds.update_rejected
    (count)    		[Legacy] Total API fetches that failed because of schema/validation errors
    Shown as request
    envoy.http.rds.version
    (gauge)    		[Legacy] Hash of the contents from the last successful API fetch
    Shown as item
    envoy.http.rds.control_plane.connected_state
    (gauge)    		[Legacy] A boolean (1 for connected and 0 for disconnected) that indicates the current connection state with management server
    Shown as connection
    envoy.http.rds.control_plane.pending_requests
    (gauge)    		[Legacy] Total number of pending requests when the rate limit was enforced
    Shown as request
    envoy.http.rds.control_plane.rate_limit_enforced
    (count)    		[Legacy] Total number of times rate limit was enforced for management server requests
    Shown as occurrence
    envoy.tcp.downstream_cx.count
    (count)    		[OpenMetrics V2] Total number of connections handled by the filter
    Shown as connection
    envoy.tcp.downstream_cx_total
    (count)    		[Legacy] Total number of connections handled by the filter
    Shown as connection
    envoy.tcp.downstream_cx_no_route.count
    (count)    		[OpenMetrics V2] Number of connections for which no matching route was found
    Shown as connection
    envoy.tcp.downstream_cx_no_route
    (count)    		[Legacy] Number of connections for which no matching route was found
    Shown as connection
    envoy.tcp.downstream_cx_tx_bytes.count
    (count)    		[OpenMetrics V2] Total bytes written to the downstream connection
    Shown as byte
    envoy.tcp.downstream_cx_tx_bytes_total
    (count)    		[Legacy] Total bytes written to the downstream connection
    Shown as byte
    envoy.tcp.downstream_cx_tx_bytes_buffered
    (gauge)    		[OpenMetrics V2 and Legacy] Total bytes currently buffered to the downstream connection
    Shown as byte
    envoy.tcp.downstream_cx_rx_bytes.count
    (count)    		[OpenMetrics V2] Total bytes written from the downstream connection
    Shown as byte
    envoy.tcp.downstream_cx_rx_bytes_total
    (count)    		[Legacy] Total bytes written from the downstream connection
    Shown as byte
    envoy.tcp.downstream_cx_rx_bytes_buffered
    (gauge)    		[OpenMetrics V2 and Legacy] Total bytes currently buffered from the downstream connection
    Shown as byte
    envoy.tcp.downstream_flow_control_paused_reading.count
    (count)    		[OpenMetrics V2] Total number of times flow control paused reading from downstream
    Shown as occurrence
    envoy.tcp.downstream_flow_control_paused_reading_total
    (count)    		[Legacy] Total number of times flow control paused reading from downstream
    Shown as occurrence
    envoy.tcp.downstream_flow_control_resumed_reading.count
    (count)    		[OpenMetrics V2] Total number of times flow control resumed reading from downstream
    Shown as occurrence
    envoy.tcp.downstream_flow_control_resumed_reading_total
    (count)    		[Legacy] Total number of times flow control resumed reading from downstream
    Shown as occurrence
    envoy.tcp.idle_timeout.count
    (count)    		[OpenMetrics V2] Total number of connections closed due to idle timeout
    Shown as connection
    envoy.tcp.idle_timeout
    (count)    		[Legacy] Total number of connections closed due to idle timeout
    Shown as connection
    envoy.tcp.on_demand_cluster_attempt.count
    (count)    		[OpenMetrics V2] Total number of connections that requested on demand cluster
    Shown as connection
    envoy.tcp.on_demand_cluster_missing.count
    (count)    		[OpenMetrics V2] Total number of connections closed due to on demand cluster is missing
    Shown as connection
    envoy.tcp.on_demand_cluster_success.count
    (count)    		[OpenMetrics V2] Total number of connections that requested and received on demand cluster
    Shown as connection
    envoy.tcp.on_demand_cluster_timeout.count
    (count)    		[OpenMetrics V2] Total number of connections closed due to on demand cluster lookup timeout
    Shown as connection
    envoy.tcp.max_downstream_connection_duration.count
    (count)    		[OpenMetrics V2] Total number of connections closed due to maxdownstreamconnection_duration timeout
    Shown as connection
    envoy.tcp.max_downstream_connection_duration
    (count)    		[Legacy] Total number of connections closed due to maxdownstreamconnection_duration timeout
    Shown as connection
    envoy.tcp.upstream_flush.count
    (count)    		[OpenMetrics V2] Total number of connections that continued to flush upstream data after the downstream connection was closed
    Shown as connection
    envoy.tcp.upstream_flush_total
    (count)    		[Legacy] Total number of connections that continued to flush upstream data after the downstream connection was closed
    Shown as connection
    envoy.tcp.upstream_flush_active
    (gauge)    		[OpenMetrics and V2 Legacy] Total connections currently continuing to flush upstream data after the downstream connection was closed
    Shown as connection
    envoy.auth.clientssl.update_success
    (count)    		[Legacy] Total principal update successes
    Shown as success
    envoy.auth.clientssl.update_failure
    (count)    		[Legacy] Total principal update failures
    Shown as error
    envoy.auth.clientssl.auth_no_ssl
    (count)    		[Legacy] Total connections ignored due to no TLS
    Shown as connection
    envoy.auth.clientssl.auth_ip_white_list
    (count)    		[Legacy] Total connections allowed due to the IP white list
    Shown as connection
    envoy.auth.clientssl.auth_digest_match
    (count)    		[Legacy] Total connections allowed due to certificate match
    Shown as connection
    envoy.auth.clientssl.auth_digest_no_match
    (count)    		[Legacy] Total connections denied due to no certificate match
    Shown as connection
    envoy.auth.clientssl.total_principals
    (gauge)    		[Legacy] Total loaded principals
    Shown as item
    envoy.ratelimit.total
    (count)    		[Legacy] Total requests to the rate limit service
    Shown as response
    envoy.ratelimit.error
    (count)    		[Legacy] Total errors contacting the rate limit service
    Shown as response
    envoy.ratelimit.over_limit
    (count)    		[Legacy] Total over limit responses from the rate limit service
    Shown as response
    envoy.ratelimit.ok
    (count)    		[Legacy] Total under limit responses from the rate limit service
    Shown as response
    envoy.ratelimit.cx_closed
    (count)    		[Legacy] Total connections closed due to an over limit response from the rate limit service
    Shown as connection
    envoy.ratelimit.active
    (gauge)    		[Legacy] Total active requests to the rate limit service
    Shown as request
    envoy.redis.downstream_cx_active
    (gauge)    		[Legacy] Total active connections
    Shown as connection
    envoy.redis.downstream_cx_protocol_error
    (count)    		[Legacy] Total protocol errors
    Shown as error
    envoy.redis.downstream_cx_rx_bytes_buffered
    (gauge)    		[Legacy] Total received bytes currently buffered
    Shown as byte
    envoy.redis.downstream_cx_rx_bytes_total
    (count)    		[Legacy] Total bytes received
    Shown as byte
    envoy.redis.downstream_cx_total
    (count)    		[Legacy] Total connections
    Shown as connection
    envoy.redis.downstream_cx_tx_bytes_buffered
    (gauge)    		[Legacy] Total sent bytes currently buffered
    Shown as byte
    envoy.redis.downstream_cx_tx_bytes_total
    (count)    		[Legacy] Total bytes sent
    Shown as byte
    envoy.redis.downstream_cx_drain_close
    (count)    		[Legacy] Number of connections closed due to draining
    Shown as connection
    envoy.redis.downstream_rq_active
    (gauge)    		[Legacy] Total active requests
    Shown as request
    envoy.redis.downstream_rq_total
    (count)    		[Legacy] Total requests
    Shown as request
    envoy.redis.splitter.invalid_request
    (count)    		[Legacy] Number of requests with an incorrect number of arguments
    Shown as request
    envoy.redis.splitter.unsupported_command
    (count)    		[Legacy] Number of commands issued which are not recognized by the command splitter
    Shown as operation
    envoy.redis.command.total
    (count)    		[Legacy] Number of commands
    Shown as operation
    envoy.redis.command.success
    (count)    		[Legacy] Number of commands that were successful
    Shown as operation
    envoy.redis.command.error
    (count)    		[Legacy] Number of commands that returned a partial or complete error response
    Shown as operation
    envoy.redis.command.latency.0percentile
    (gauge)    		[Legacy] Command execution time in milliseconds 0-percentile
    Shown as millisecond
    envoy.redis.command.latency.25percentile
    (gauge)    		[Legacy] Command execution time in milliseconds 25-percentile
    Shown as millisecond
    envoy.redis.command.latency.50percentile
    (gauge)    		[Legacy] Command execution time in milliseconds 50-percentile
    Shown as millisecond
    envoy.redis.command.latency.75percentile
    (gauge)    		[Legacy] Command execution time in milliseconds 75-percentile
    Shown as millisecond
    envoy.redis.command.latency.90percentile
    (gauge)    		[Legacy] Command execution time in milliseconds 90-percentile
    Shown as millisecond
    envoy.redis.command.latency.95percentile
    (gauge)    		[Legacy] Command execution time in milliseconds 95-percentile
    Shown as millisecond
    envoy.redis.command.latency.99percentile
    (gauge)    		[Legacy] Command execution time in milliseconds 99-percentile
    Shown as millisecond
    envoy.redis.command.latency.99_9percentile
    (gauge)    		[Legacy] Command execution time in milliseconds 99.9-percentile
    Shown as millisecond
    envoy.redis.command.latency.100percentile
    (gauge)    		[Legacy] Command execution time in milliseconds 100-percentile
    Shown as millisecond
    envoy.mongo.decoding_error
    (count)    		[Legacy] Number of MongoDB protocol decoding errors
    Shown as error
    envoy.mongo.delay_injected
    (count)    		[Legacy] Number of times the delay is injected
    Shown as occurrence
    envoy.mongo.op_get_more
    (count)    		[Legacy] Number of OPGETMORE messages
    Shown as message
    envoy.mongo.op_insert
    (count)    		[Legacy] Number of OP_INSERT messages
    Shown as message
    envoy.mongo.op_kill_cursors
    (count)    		[Legacy] Number of OPKILLCURSORS messages
    Shown as message
    envoy.mongo.op_query
    (count)    		[Legacy] Number of OP_QUERY messages
    Shown as message
    envoy.mongo.op_query_tailable_cursor
    (count)    		[Legacy] Number of OP_QUERY with tailable cursor flag set
    Shown as message
    envoy.mongo.op_query_no_cursor_timeout
    (count)    		[Legacy] Number of OP_QUERY with no cursor timeout flag set
    Shown as message
    envoy.mongo.op_query_await_data
    (count)    		[Legacy] Number of OP_QUERY with await data flag set
    Shown as message
    envoy.mongo.op_query_exhaust
    (count)    		[Legacy] Number of OP_QUERY with exhaust flag set
    Shown as message
    envoy.mongo.op_query_no_max_time
    (count)    		[Legacy] Number of queries without maxTimeMS set
    Shown as query
    envoy.mongo.op_query_scatter_get
    (count)    		[Legacy] Number of scatter get queries
    Shown as query
    envoy.mongo.op_query_multi_get
    (count)    		[Legacy] Number of multi get queries
    Shown as query
    envoy.mongo.op_query_active
    (gauge)    		[Legacy] Number of active queries
    Shown as query
    envoy.mongo.op_reply
    (count)    		[Legacy] Number of OP_REPLY messages
    Shown as message
    envoy.mongo.op_reply_cursor_not_found
    (count)    		[Legacy] Number of OP_REPLY with cursor not found flag set
    Shown as message
    envoy.mongo.op_reply_query_failure
    (count)    		[Legacy] Number of OP_REPLY with query failure flag set
    Shown as message
    envoy.mongo.op_reply_valid_cursor
    (count)    		[Legacy] Number of OP_REPLY with a valid cursor
    Shown as message
    envoy.mongo.cx_destroy_local_with_active_rq
    (count)    		[Legacy] Connections destroyed locally with an active query
    Shown as connection
    envoy.mongo.cx_destroy_remote_with_active_rq
    (count)    		[Legacy] Connections destroyed remotely with an active query
    Shown as connection
    envoy.mongo.cx_drain_close
    (count)    		[Legacy] Connections gracefully closed on reply boundaries during server drain
    Shown as connection
    envoy.mongo.cmd.total
    (count)    		[Legacy] Number of commands
    Shown as command
    envoy.mongo.collection.query.total
    (count)    		[Legacy] Number of queries
    Shown as query
    envoy.mongo.collection.query.scatter_get
    (count)    		[Legacy] Number of scatter gets
    Shown as query
    envoy.mongo.collection.query.multi_get
    (count)    		[Legacy] Number of multi gets
    Shown as query
    envoy.mongo.collection.callsite.query.total
    (count)    		[Legacy] Number of queries for the callsite tag
    Shown as query
    envoy.mongo.collection.callsite.query.scatter_get
    (count)    		[Legacy] Number of scatter gets for the callsite tag
    Shown as query
    envoy.mongo.collection.callsite.query.multi_get
    (count)    		[Legacy] Number of multi gets for the callsite tag
    Shown as query
    envoy.listener.downstream_cx_total
    (count)    		[Legacy] Total connections
    Shown as connection
    envoy.listener.downstream_cx_destroy
    (count)    		[Legacy] Total destroyed connections
    Shown as connection
    envoy.listener.downstream_cx_active
    (gauge)    		[Legacy] Total active connections
    Shown as connection
    envoy.listener.downstream_pre_cx_active
    (gauge)    		[Legacy] Sockets currently undergoing listener filter processing
    Shown as connection
    envoy.listener.downstream_pre_cx_timeout
    (count)    		[Legacy] Sockets that timed out during listener filter processing
    Shown as connection
    envoy.listener.no_filter_chain_match
    (count)    		[Legacy] Total connections that didn't match any filter chain
    Shown as connection
    envoy.listener.server_ssl_socket_factory.downstream_context_secrets_not_ready
    (count)    		[Legacy] Total number of downstream connections reset due to empty ssl certificate
    Shown as connection
    envoy.listener.server_ssl_socket_factory.ssl_context_update_by_sds
    (count)    		[Legacy] Total number of ssl context has been updated
    envoy.listener.ssl.connection_error
    (count)    		[Legacy] Total TLS connection errors not including failed certificate verifications
    Shown as error
    envoy.listener.ssl.handshake
    (count)    		[Legacy] Total successful TLS connection handshakes
    Shown as success
    envoy.listener.ssl.session_reused
    (count)    		[Legacy] Total successful TLS session resumptions
    Shown as success
    envoy.listener.ssl.no_certificate
    (count)    		[Legacy] Total successful TLS connections with no client certificate
    Shown as success
    envoy.listener.ssl.fail_no_sni_match
    (count)    		[Legacy] Total TLS connections that were rejected because of missing SNI match
    Shown as connection
    envoy.listener.ssl.fail_verify_no_cert
    (count)    		[Legacy] Total TLS connections that failed because of missing client certificate
    Shown as connection
    envoy.listener.ssl.fail_verify_error
    (count)    		[Legacy] Total TLS connections that failed CA verification
    Shown as connection
    envoy.listener.ssl.fail_verify_san
    (count)    		[Legacy] Total TLS connections that failed SAN verification
    Shown as connection
    envoy.listener.ssl.fail_verify_cert_hash
    (count)    		[Legacy] Total TLS connections that failed certificate pinning verification
    Shown as connection
    envoy.listener.ssl.ciphers
    (count)    		[Legacy] Total TLS connections that used cipher tag
    Shown as connection
    envoy.listener.ssl.versions
    (count)    		[Legacy] Total successful TLS connections that used protocol version tag
    Shown as connection
    envoy.listener.ssl.curves
    (count)    		[Legacy] Total successful TLS connections that used ECDHE curve tag
    Shown as connection
    envoy.listener.ssl.sigalgs
    (count)    		[Legacy] Total successful TLS connections that used signature algorithm sigalg tag
    Shown as connection
    envoy.listener_manager.listener_added
    (count)    		[Legacy] Total listeners added (either via static config or LDS)
    Shown as host
    envoy.listener_manager.listener_modified
    (count)    		[Legacy] Total listeners modified (via LDS)
    Shown as host
    envoy.listener_manager.listener_removed
    (count)    		[Legacy] Total listeners removed (via LDS)
    Shown as host
    envoy.listener_manager.listener_create_success
    (count)    		[Legacy] Total listener objects successfully added to workers
    Shown as host
    envoy.listener_manager.listener_create_failure
    (count)    		[Legacy] Total failed listener object additions to workers
    Shown as host
    envoy.listener_manager.total_listeners_warming
    (gauge)    		[Legacy] Number of currently warming listeners
    Shown as host
    envoy.listener_manager.total_listeners_active
    (gauge)    		[Legacy] Number of currently active listeners
    Shown as host
    envoy.listener_manager.total_listeners_draining
    (gauge)    		[Legacy] Number of currently draining listeners
    Shown as host
    envoy.listener_manager.lds.config_reload
    (count)    		[Legacy] Total API fetches that resulted in a config reload due to a different config
    Shown as request
    envoy.listener_manager.lds.update_attempt
    (count)    		[Legacy] Total API fetches attempted
    Shown as request
    envoy.listener_manager.lds.update_success
    (count)    		[Legacy] Total API fetches completed successfully
    Shown as request
    envoy.listener_manager.lds.update_failure
    (count)    		[Legacy] Total API fetches that failed because of network errors
    Shown as request
    envoy.listener_manager.lds.update_rejected
    (count)    		[Legacy] Total API fetches that failed because of schema/validation errors
    Shown as request
    envoy.listener_manager.lds.update_time
    (gauge)    		[Legacy] Timestamp of the last successful API fetch attempt as milliseconds since the epoch
    Shown as millisecond
    envoy.listener_manager.lds.version
    (gauge)    		[Legacy] Hash of the contents from the last successful API fetch
    Shown as item
    envoy.listener_manager.lds.control_plane.connected_state
    (gauge)    		[Legacy] A boolean (1 for connected and 0 for disconnected) that indicates the current connection state with management server
    Shown as connection
    envoy.listener_manager.lds.control_plane.pending_requests
    (gauge)    		[Legacy] Total number of pending requests when the rate limit was enforced
    Shown as request
    envoy.listener_manager.lds.control_plane.rate_limit_enforced
    (count)    		[Legacy] Total number of times rate limit was enforced for management server requests
    Shown as occurrence
    envoy.http.downstream_cx_total
    (count)    		[Legacy] Total connections
    Shown as connection
    envoy.http.downstream_cx_ssl_total
    (count)    		[Legacy] Total TLS connections
    Shown as connection
    envoy.http.downstream_cx_http1_total
    (count)    		[Legacy] Total HTTP/1.1 connections
    Shown as connection
    envoy.http.downstream_cx_http2_total
    (count)    		[Legacy] Total HTTP/2 connections
    Shown as connection
    envoy.http.downstream_cx_http3_total
    (count)    		[Legacy] [API v3 only] Total HTTP/3 connections
    Shown as connection
    envoy.http.downstream_cx_websocket_total
    (count)    		[Legacy] Total WebSocket connections
    Shown as connection
    envoy.http.downstream_cx_destroy
    (count)    		[Legacy] Total connections destroyed
    Shown as connection
    envoy.http.downstream_cx_destroy_remote
    (count)    		[Legacy] Total connections destroyed due to remote close
    Shown as connection
    envoy.http.downstream_cx_destroy_local
    (count)    		[Legacy] Total connections destroyed due to local close
    Shown as connection
    envoy.http.downstream_cx_destroy_active_rq
    (count)    		[Legacy] Total connections destroyed with active requests
    Shown as connection
    envoy.http.downstream_cx_destroy_local_active_rq
    (count)    		[Legacy] Total connections destroyed locally with active requests
    Shown as connection
    envoy.http.downstream_cx_destroy_remote_active_rq
    (count)    		[Legacy] Total connections destroyed remotely with active requests
    Shown as connection
    envoy.http.downstream_cx_active
    (gauge)    		[Legacy] Total active connections
    Shown as connection
    envoy.http.downstream_cx_ssl_active
    (gauge)    		[Legacy] Total active TLS connections
    Shown as connection
    envoy.http.downstream_cx_http1_active
    (gauge)    		[Legacy] Total active HTTP/1.1 connections
    Shown as connection
    envoy.http.downstream_cx_websocket_active
    (gauge)    		[Legacy] Total active WebSocket connections
    Shown as connection
    envoy.http.downstream_cx_http2_active
    (gauge)    		[Legacy] Total active HTTP/2 connections
    Shown as connection
    envoy.http.downstream_cx_http3_active
    (gauge)    		[Legacy] [API v3 only] Total active HTTP/3 connections
    Shown as connection
    envoy.http.downstream_cx_protocol_error
    (count)    		[Legacy] Total protocol errors
    Shown as error
    envoy.http.downstream_cx_rx_bytes_total
    (count)    		[Legacy] Total bytes received
    Shown as byte
    envoy.http.downstream_cx_rx_bytes_buffered
    (gauge)    		[Legacy] Total received bytes currently buffered
    Shown as byte
    envoy.http.downstream_cx_tx_bytes_total
    (count)    		[Legacy] Total bytes sent
    Shown as byte
    envoy.http.downstream_cx_tx_bytes_buffered
    (gauge)    		[Legacy] Total sent bytes currently buffered
    Shown as byte
    envoy.http.downstream_cx_drain_close
    (count)    		[Legacy] Total connections closed due to draining
    Shown as connection
    envoy.http.downstream_cx_idle_timeout
    (count)    		[Legacy] Total connections closed due to idle timeout
    Shown as connection
    envoy.http.downstream_flow_control_paused_reading_total
    (count)    		[Legacy] Total number of times reads were disabled due to flow control
    Shown as occurrence
    envoy.http.downstream_flow_control_resumed_reading_total
    (count)    		[Legacy] Total number of times reads were enabled on the connection due to flow control
    Shown as occurrence
    envoy.http.downstream_rq_total
    (count)    		[Legacy] Total requests
    Shown as request
    envoy.http.downstream_rq_http1_total
    (count)    		[Legacy] Total HTTP/1.1 requests
    Shown as request
    envoy.http.downstream_rq_http2_total
    (count)    		[Legacy] Total HTTP/2 requests
    Shown as request
    envoy.http.downstream_rq_http3_total
    (count)    		[Legacy] [API v3 only] Total HTTP/3 requests
    Shown as request
    envoy.http.downstream_rq_active
    (gauge)    		[Legacy] Total active requests
    Shown as request
    envoy.http.downstream_rq_response_before_rq_complete
    (count)    		[Legacy] Total responses sent before the request was complete
    Shown as response
    envoy.http.downstream_rq_rx_reset
    (count)    		[Legacy] Total request resets received
    Shown as request
    envoy.http.downstream_rq_tx_reset
    (count)    		[Legacy] Total request resets sent
    Shown as request
    envoy.http.downstream_rq_non_relative_path
    (count)    		[Legacy] Total requests with a non-relative HTTP path
    Shown as request
    envoy.http.downstream_rq_too_large
    (count)    		[Legacy] Total requests resulting in a 413 due to buffering an overly large body
    Shown as request
    envoy.http.downstream_rq_1xx
    (count)    		[Legacy] Total 1xx responses
    Shown as response
    envoy.http.downstream_rq_2xx
    (count)    		[Legacy] Total 2xx responses
    Shown as response
    envoy.http.downstream_rq_3xx
    (count)    		[Legacy] Total 3xx responses
    Shown as response
    envoy.http.downstream_rq_4xx
    (count)    		[Legacy] Total 4xx responses
    Shown as response
    envoy.http.downstream_rq_5xx
    (count)    		[Legacy] Total 5xx responses
    Shown as response
    envoy.http.downstream_rq_ws_on_non_ws_route
    (count)    		[Legacy] Total WebSocket upgrade requests rejected by non WebSocket routes
    Shown as request
    envoy.http.rbac_allowed.count
    (count)    		[OpenMetrics V2] Total requests that were allowed access
    Shown as request
    envoy.http.rbac_denied.count
    (count)    		[OpenMetrics V2] Total requests that were denied access
    Shown as request
    envoy.http.rbac_shadow_allowed.count
    (count)    		[OpenMetrics V2] Total requests that would be allowed access by the filter's shadow rules
    Shown as request
    envoy.http.rbac_shadow_denied.count
    (count)    		[OpenMetrics V2] Total requests that would be denied access by the filter's shadow rules
    Shown as request
    envoy.http.local_rate_limit_enabled.count
    (count)    		[OpenMetrics V2] Total number of requests for which the rate limiter was consulted
    Shown as request
    envoy.http.local_rate_limit_enforced.count
    (count)    		[OpenMetrics V2] Total number of requests for which rate limiting was applied (e.g.: 429 returned)
    Shown as request
    envoy.http.local_rate_limit_rate_limited.count
    (count)    		[OpenMetrics V2] Total responses without an available token (but not necessarily enforced)
    Shown as request
    envoy.http.local_rate_limit_ok.count
    (count)    		[OpenMetrics V2] Total under limit responses from the token bucket
    Shown as request
    envoy.http.rs_too_large
    (count)    		[Legacy] Total response errors due to buffering an overly large body
    Shown as error
    envoy.http.user_agent.downstream_cx_total
    (count)    		[Legacy] Total connections
    Shown as connection
    envoy.http.user_agent.downstream_cx_destroy_remote_active_rq
    (count)    		[Legacy] Total connections destroyed remotely with active requests
    Shown as connection
    envoy.http.user_agent.downstream_rq_total
    (count)    		[Legacy] Total requests
    Shown as request
    envoy.listener.http.downstream_rq_1xx
    (count)    		[Legacy] Total 1xx responses
    Shown as response
    envoy.listener.http.downstream_rq_2xx
    (count)    		[Legacy] Total 2xx responses
    Shown as response
    envoy.listener.http.downstream_rq_3xx
    (count)    		[Legacy] Total 3xx responses
    Shown as response
    envoy.listener.http.downstream_rq_4xx
    (count)    		[Legacy] Total 4xx responses
    Shown as response
    envoy.listener.http.downstream_rq_5xx
    (count)    		[Legacy] Total 5xx responses
    Shown as response
    envoy.listener.http.downstream_rq_completed
    (count)    		[Legacy] Total requests that resulted in a response (e.g. does not include aborted requests)
    Shown as response
    envoy.http2.rx_reset
    (count)    		[Legacy] Total number of reset stream frames received by Envoy
    Shown as message
    envoy.http2.tx_reset
    (count)    		[Legacy] Total number of reset stream frames transmitted by Envoy
    Shown as message
    envoy.http2.header_overflow
    (count)    		[Legacy] Total number of connections reset due to the headers being larger than 63 K
    Shown as connection
    envoy.http2.trailers
    (count)    		[Legacy] Total number of trailers seen on requests coming from downstream
    Shown as item
    envoy.http2.headers_cb_no_stream
    (count)    		[Legacy] Total number of errors where a header callback is called without an associated stream. This tracks an unexpected occurrence due to an as yet undiagnosed bug.
    Shown as error
    envoy.http2.too_many_header_frames
    (count)    		[Legacy] Total number of times an HTTP2 connection is reset due to receiving too many headers frames. Envoy currently supports proxying at most one header frame for 100-Continue one non-100 response code header frame and one frame with trailers.
    Shown as occurrence
    envoy.cluster_manager.cluster_added
    (count)    		[Legacy] Total clusters added (either via static config or CDS)
    Shown as node
    envoy.cluster_manager.cluster_modified
    (count)    		[Legacy] Total clusters modified (via CDS)
    Shown as node
    envoy.cluster_manager.cluster_removed
    (count)    		[Legacy] Total clusters removed (via CDS)
    Shown as node
    envoy.cluster_manager.active_clusters
    (gauge)    		[Legacy] Number of currently active (warmed) clusters
    Shown as node
    envoy.cluster_manager.warming_clusters
    (gauge)    		[Legacy] Number of currently warming (not active) clusters
    Shown as node
    envoy.cluster.assignment_stale
    (count)    		[Legacy] Number of times the received assignments went stale before new assignments arrived.
    envoy.cluster.assignment_timeout_received
    (count)    		[Legacy] Total assignments received with endpoint lease information.
    Shown as occurrence
    envoy.cluster.upstream_cx_total
    (count)    		[Legacy] Total connections
    Shown as connection
    envoy.cluster.upstream_cx_active
    (gauge)    		[Legacy] Total active connections
    Shown as connection
    envoy.cluster.upstream_cx_http1_total
    (count)    		[Legacy] Total HTTP/1.1 connections
    Shown as connection
    envoy.cluster.upstream_cx_http2_total
    (count)    		[Legacy] Total HTTP/2 connections
    Shown as connection
    envoy.cluster.upstream_cx_http3_total
    (count)    		[Legacy] [API v3 only] Total HTTP/3 connections
    Shown as connection
    envoy.cluster.upstream_cx_connect_fail
    (count)    		[Legacy] Total connection failures
    Shown as error
    envoy.cluster.upstream_cx_connect_timeout
    (count)    		[Legacy] Total connection timeouts
    Shown as timeout
    envoy.cluster.upstream_cx_connect_attempts_exceeded
    (count)    		[Legacy] Total consecutive connection failures exceeding configured connection attempts
    Shown as error
    envoy.cluster.upstream_cx_overflow
    (count)    		[Legacy] Total times that the cluster's connection circuit breaker overflowed
    Shown as occurrence
    envoy.cluster.upstream_cx_destroy
    (count)    		[Legacy] Total destroyed connections
    Shown as connection
    envoy.cluster.upstream_cx_destroy_local
    (count)    		[Legacy] Total connections destroyed locally
    Shown as connection
    envoy.cluster.upstream_cx_destroy_remote
    (count)    		[Legacy] Total connections destroyed remotely
    Shown as connection
    envoy.cluster.upstream_cx_destroy_with_active_rq
    (count)    		[Legacy] Total connections destroyed with active requests
    Shown as connection
    envoy.cluster.upstream_cx_destroy_local_with_active_rq
    (count)    		[Legacy] Total connections destroyed locally with active requests
    Shown as connection
    envoy.cluster.upstream_cx_destroy_remote_with_active_rq
    (count)    		[Legacy] Total connections destroyed remotely with active requests
    Shown as connection
    envoy.cluster.upstream_cx_close_notify
    (count)    		[Legacy] Total connections closed via HTTP/1.1 connection close header or HTTP/2 GOAWAY
    Shown as connection
    envoy.cluster.upstream_cx_rx_bytes_total
    (count)    		[Legacy] Total received connection bytes
    Shown as byte
    envoy.cluster.upstream_cx_rx_bytes_buffered
    (gauge)    		[Legacy] Received connection bytes currently buffered
    Shown as byte
    envoy.cluster.upstream_cx_tx_bytes_total
    (count)    		[Legacy] Total sent connection bytes
    Shown as byte
    envoy.cluster.upstream_cx_tx_bytes_buffered
    (gauge)    		[Legacy] Send connection bytes currently buffered
    Shown as byte
    envoy.cluster.upstream_cx_protocol_error
    (count)    		[Legacy] Total connection protocol errors
    Shown as error
    envoy.cluster.upstream_cx_max_requests
    (count)    		[Legacy] Total connections closed due to maximum requests
    Shown as connection
    envoy.cluster.upstream_cx_none_healthy
    (count)    		[Legacy] Total times connection not established due to no healthy hosts
    Shown as connection
    envoy.cluster.upstream_cx_idle_timeout
    (count)    		[Legacy] Total connection idle timeouts
    Shown as connection
    envoy.cluster.upstream_cx_pool_overflow
    (count)    		[Legacy] Total times that the cluster's connection pool circuit breaker overflowed
    envoy.cluster.upstream_rq_total
    (count)    		[Legacy] Total requests
    Shown as request
    envoy.cluster.upstream_rq_active
    (gauge)    		[Legacy] Total active requests
    Shown as request
    envoy.cluster.upstream_rq_pending_total
    (count)    		[Legacy] Total requests pending a connection pool connection
    Shown as request
    envoy.cluster.upstream_rq_pending_overflow
    (count)    		[Legacy] Total requests that overflowed connection pool circuit breaking and were failed
    Shown as request
    envoy.cluster.upstream_rq_pending_failure_eject
    (count)    		[Legacy] Total requests that were failed due to a connection pool connection failure
    Shown as request
    envoy.cluster.upstream_rq_pending_active
    (gauge)    		[Legacy] Total active requests pending a connection pool connection
    Shown as request
    envoy.cluster.upstream_rq_cancelled
    (count)    		[Legacy] Total requests cancelled before obtaining a connection pool connection
    Shown as request
    envoy.cluster.upstream_rq_maintenance_mode
    (count)    		[Legacy] Total requests that resulted in an immediate 503 due to maintenance mode
    Shown as request
    envoy.cluster.upstream_rq_max_duration_reached
    (count)    		[Legacy] Total requests closed due to max duration reached
    Shown as request
    envoy.cluster.upstream_rq_timeout
    (count)    		[Legacy] Total requests that timed out waiting for a response
    Shown as request
    envoy.cluster.upstream_rq_per_try_timeout
    (count)    		[Legacy] Total requests that hit the per try timeout
    Shown as request
    envoy.cluster.upstream_rq_rx_reset
    (count)    		[Legacy] Total requests that were reset remotely
    Shown as request
    envoy.cluster.upstream_rq_tx_reset
    (count)    		[Legacy] Total requests that were reset locally
    Shown as request
    envoy.cluster.upstream_rq_retry
    (count)    		[Legacy] Total request retries
    Shown as request
    envoy.cluster.upstream_rq_retry_success
    (count)    		[Legacy] Total request retry successes
    Shown as request
    envoy.cluster.upstream_rq_retry_overflow
    (count)    		[Legacy] Total requests not retried due to circuit breaking
    Shown as request
    envoy.cluster.upstream_internal_redirect_failed_total
    (count)    		[Legacy] Total number of times failed internal redirects resulted in redirects being passed downstream
    envoy.cluster.upstream_internal_redirect_succeeded_total
    (count)    		[Legacy] Total number of times internal redirects resulted in a second upstream request
    envoy.cluster.client_ssl_socket_factory.ssl_context_update_by_sds
    (count)    		[Legacy] Total number of ssl context has been updated
    envoy.cluster.client_ssl_socket_factory.upstream_context_secrets_not_ready
    (count)    		[Legacy] Total number of upstream connections reset due to empty ssl certificate
    Shown as connection
    envoy.cluster.ssl.connection_error
    (count)    		[Legacy] Total TLS connection errors not including failed certificate verifications
    Shown as error
    envoy.cluster.ssl.handshake
    (count)    		[Legacy] Total successful TLS connection handshakes
    Shown as success
    envoy.cluster.ssl.session_reused
    (count)    		[Legacy] Total successful TLS session resumptions
    Shown as success
    envoy.cluster.ssl.no_certificate
    (count)    		[Legacy] Total successful TLS connections with no client certificate
    Shown as success
    envoy.cluster.ssl.fail_no_sni_match
    (count)    		[Legacy] Total TLS connections that were rejected because of missing SNI match
    Shown as connection
    envoy.cluster.ssl.fail_verify_no_cert
    (count)    		[Legacy] Total TLS connections that failed because of missing client certificate
    Shown as connection
    envoy.cluster.ssl.fail_verify_error
    (count)    		[Legacy] Total TLS connections that failed CA verification
    Shown as connection
    envoy.cluster.ssl.fail_verify_san
    (count)    		[Legacy] Total TLS connections that failed SAN verification
    Shown as connection
    envoy.cluster.ssl.fail_verify_cert_hash
    (count)    		[Legacy] Total TLS connections that failed certificate pinning verification
    Shown as connection
    envoy.cluster.ssl.ciphers
    (count)    		[Legacy] Total TLS connections that used cipher tag
    Shown as connection
    envoy.cluster.ssl.versions
    (count)    		[Legacy] Total successful TLS connections that used protocol version tag
    Shown as connection
    envoy.cluster.ssl.curves
    (count)    		[Legacy] Total successful TLS connections that used ECDHE curve tag
    Shown as connection
    envoy.cluster.ssl.sigalgs
    (count)    		[Legacy] Total successful TLS connections that used signature algorithm sigalg tag
    Shown as connection
    envoy.cluster.upstream_flow_control_paused_reading_total
    (count)    		[Legacy] Total number of times flow control paused reading from upstream
    Shown as occurrence
    envoy.cluster.upstream_flow_control_resumed_reading_total
    (count)    		[Legacy] Total number of times flow control resumed reading from upstream
    Shown as occurrence
    envoy.cluster.upstream_flow_control_resumed_reading.count
    (count)    		[Opnemetrics V2] Count of times flow control resumed reading from upstream
    Shown as occurrence
    envoy.cluster.upstream_flow_control_backed_up_total
    (count)    		[Legacy] Total number of times the upstream connection backed up and paused reads from downstream
    Shown as occurrence
    envoy.cluster.upstream_flow_control_drained_total
    (count)    		[Legacy] Total number of times the upstream connection drained and resumed reads from downstream
    Shown as occurrence
    envoy.cluster.membership_change
    (count)    		[Legacy] Total cluster membership changes
    Shown as event
    envoy.cluster.membership_degraded
    (gauge)    		[Legacy] Current cluster degraded total
    Shown as node
    envoy.cluster.membership_excluded
    (gauge)    		[Legacy] Current cluster membership excluded
    Shown as node
    envoy.cluster.membership_healthy
    (gauge)    		[Legacy] Current cluster healthy total (inclusive of both health checking and outlier detection)
    Shown as node
    envoy.cluster.membership_total
    (gauge)    		[Legacy] Current cluster membership total
    Shown as node
    envoy.cluster.retry_or_shadow_abandoned
    (count)    		[Legacy] Total number of times shadowing or retry buffering was canceled due to buffer limits
    Shown as occurrence
    envoy.cluster.config_reload
    (count)    		[Legacy] Total API fetches that resulted in a config reload due to a different config
    Shown as request
    envoy.cluster.update_attempt
    (count)    		[Legacy] Total cluster membership update attempts
    Shown as occurrence
    envoy.cluster.update_success
    (count)    		[Legacy] Total cluster membership update successes
    Shown as success
    envoy.cluster.update_failure
    (count)    		[Legacy] Total cluster membership update failures
    Shown as error
    envoy.cluster.update_no_rebuild
    (count)    		[Legacy] Total successful cluster membership updates that didn't result in any cluster load balancing structure rebuilds
    Shown as occurrence
    envoy.cluster.version
    (gauge)    		[Legacy] Hash of the contents from the last successful API fetch
    Shown as item
    envoy.cluster.max_host_weight
    (gauge)    		[Legacy] Maximum weight of any host in the cluster
    Shown as item
    envoy.cluster.bind_errors
    (count)    		[Legacy] Total errors binding the socket to the configured source address
    Shown as error
    envoy.cluster.health_check.attempt
    (count)    		[Legacy] Number of health checks
    Shown as check
    envoy.cluster.health_check.success
    (count)    		[Legacy] Number of successful health checks
    Shown as check
    envoy.cluster.health_check.failure
    (count)    		[Legacy] Number of immediately failed health checks (e.g. HTTP 503) as well as network failures
    Shown as check
    envoy.cluster.health_check.passive_failure
    (count)    		[Legacy] Number of health check failures due to passive events (e.g. x-envoy-immediate-health-check-fail)
    Shown as check
    envoy.cluster.health_check.network_failure
    (count)    		[Legacy] Number of health check failures due to network error
    Shown as check
    envoy.cluster.health_check.verify_cluster
    (count)    		[Legacy] Number of health checks that attempted cluster name verification
    Shown as check
    envoy.cluster.health_check.healthy
    (gauge)    		[Legacy] Number of healthy members
    Shown as check
    envoy.cluster.http1.dropped_headers_with_underscores
    (count)    		[Legacy] Total number of dropped headers with names containing underscores. This action is configured by setting the headerswithunderscores_action config setting.
    envoy.cluster.http1.metadata_not_supported_error
    (count)    		[Legacy] Total number of metadata dropped during HTTP/1 encoding
    envoy.cluster.http1.response_flood
    (count)    		[Legacy] Total number of connections closed due to response flooding
    Shown as connection
    envoy.cluster.http1.requests_rejected_with_underscores_in_headers
    (count)    		[Legacy] Total numbers of rejected requests due to header names containing underscores. This action is configured by setting the headerswithunderscores_action config setting.
    Shown as request
    envoy.cluster.http2.header_overflow
    (count)    		[Legacy] Total number of connections reset due to the headers being larger than 63 K
    Shown as connection
    envoy.cluster.http2.inbound_empty_frames_flood
    (count)    		[Legacy] Total number of connections terminated for exceeding the limit on consecutive inbound frames with an empty payload and no end stream flag
    Shown as connection
    envoy.cluster.http2.inbound_priority_frames_flood
    (count)    		[Legacy] Total number of connections terminated for exceeding the limit on inbound frames of type PRIORITY
    Shown as connection
    envoy.cluster.http2.inbound_window_update_frames_flood
    (count)    		[Legacy] Total number of connections terminated for exceeding the limit on inbound frames of type WINDOW_UPDATE
    Shown as connection
    envoy.cluster.http2.outbound_control_flood
    (count)    		[Legacy] Total number of connections terminated for exceeding the limit on outbound frames of types PING/SETTINGS/RST_STREAM
    Shown as connection
    envoy.cluster.http2.outbound_flood
    (count)    		[Legacy] Total number of connections terminated for exceeding the limit on outbound frames of all types
    Shown as connection
    envoy.cluster.http2.headers_cb_no_stream
    (count)    		[Legacy] Total number of errors where a header callback is called without an associated stream. This tracks an unexpected occurrence due to an as yet undiagnosed bug.
    Shown as error
    envoy.cluster.http2.rx_messaging_error
    (count)    		[Legacy] Total number of invalid received frames that violated section 8 of the HTTP/2 spec
    Shown as item
    envoy.cluster.http2.rx_reset
    (count)    		[Legacy] Total number of reset stream frames received by Envoy
    Shown as message
    envoy.cluster.http2.too_many_header_frames
    (count)    		[Legacy] Total number of times an HTTP2 connection is reset due to receiving too many headers frames. Envoy currently supports proxying at most one header frame for 100-Continue one non-100 response code header frame and one frame with trailers.
    Shown as occurrence
    envoy.cluster.http2.trailers
    (count)    		[Legacy] Total number of trailers seen on requests coming from downstream
    Shown as item
    envoy.cluster.http2.tx_reset
    (count)    		[Legacy] Total number of reset stream frames transmitted by Envoy
    Shown as message
    envoy.cluster.http2.stream_refused_errors.count
    (count)    		[OpenMetrics V2] Total number of invalid frames received by Envoy with a REFUSED_STREAM error code
    envoy.cluster.original_dst_host_invalid
    (count)    		[Legacy] Total number of invalid hosts passed to original destination load balancer
    envoy.cluster.outlier_detection.ejections_enforced_total
    (count)    		[Legacy] Number of enforced ejections due to any outlier type
    envoy.cluster.outlier_detection.ejections_active
    (gauge)    		[OpenMetrics V2 and Legacy] Number of currently ejected hosts
    envoy.cluster.outlier_detection.ejections_overflow
    (count)    		[Legacy] Number of ejections aborted due to the max ejection %
    envoy.cluster.outlier_detection.ejections_enforced_consecutive_5xx
    (count)    		[Legacy] Number of enforced consecutive 5xx ejections
    envoy.cluster.outlier_detection.ejections_detected_consecutive_5xx
    (count)    		[Legacy] Number of detected consecutive 5xx ejections (even if unenforced)
    envoy.cluster.outlier_detection.ejections_enforced_success_rate
    (count)    		[Legacy] Number of enforced success rate outlier ejections
    envoy.cluster.outlier_detection.ejections_detected_success_rate
    (count)    		[Legacy] Number of detected success rate outlier ejections (even if unenforced)
    envoy.cluster.outlier_detection.ejections_enforced_consecutive_gateway_failure
    (count)    		[Legacy] Number of enforced consecutive gateway failure ejections
    envoy.cluster.outlier_detection.ejections_detected_consecutive_gateway_failure
    (count)    		[Legacy] Number of detected consecutive gateway failure ejections (even if unenforced)
    envoy.cluster.outlier_detection.ejections_enforced_consecutive_local_origin_failure
    (count)    		[Legacy] Number of enforced consecutive local origin failure ejections
    envoy.cluster.outlier_detection.ejections_detected_consecutive_local_origin_failure
    (count)    		[Legacy] Number of detected consecutive local origin failure ejections (even if unenforced)
    envoy.cluster.outlier_detection.ejections_enforced_local_origin_success_rate
    (count)    		[Legacy] Number of enforced local origin success rate ejections
    envoy.cluster.outlier_detection.ejections_detected_local_origin_success_rate
    (count)    		[Legacy] Number of detected local origin success rate ejections (even if unenforced)
    envoy.cluster.outlier_detection.ejections_enforced_failure_percentage
    (count)    		[Legacy] Number of enforced failure percentage ejections
    envoy.cluster.outlier_detection.ejections_detected_failure_percentage
    (count)    		[Legacy] Number of detected failure percentage ejections (even if unenforced)
    envoy.cluster.outlier_detection.ejections_enforced_failure_percentage_local_origin
    (count)    		[Legacy] Number of enforced local origin failure percentage ejections
    envoy.cluster.outlier_detection.ejections_detected_failure_percentage_local_origin
    (count)    		[Legacy] Number of detected local origin failure percentage ejections (even if unenforced)
    envoy.cluster.circuit_breakers.cx_open
    (gauge)    		[Legacy] Whether the connection circuit breaker is closed (0) or open (1)
    envoy.cluster.circuit_breakers.cx_pool_open
    (gauge)    		[Legacy] Whether the connection pool circuit breaker is closed (0) or open (1)
    envoy.cluster.circuit_breakers.rq_pending_open
    (gauge)    		[Legacy] Whether the pending requests circuit breaker is closed (0) or open (1)
    envoy.cluster.circuit_breakers.rq_open
    (gauge)    		[Legacy] Whether the requests circuit breaker is closed (0) or open (1)
    envoy.cluster.circuit_breakers.rq_retry_open
    (gauge)    		[Legacy] Whether the retry circuit breaker is closed (0) or open (1)
    envoy.cluster.circuit_breakers.remaining_cx
    (gauge)    		[Legacy] Number of remaining connections until the circuit breaker opens
    envoy.cluster.circuit_breakers.remaining_pending
    (gauge)    		[Legacy] Number of remaining pending requests until the circuit breaker opens
    envoy.cluster.circuit_breakers.remaining_rq
    (gauge)    		[Legacy] Number of remaining requests until the circuit breaker opens
    envoy.cluster.circuit_breakers.remaining_retries
    (gauge)    		[Legacy] Number of remaining retries until the circuit breaker opens
    envoy.cluster.upstream_rq_completed
    (count)    		[Legacy] Total upstream requests completed
    Shown as response
    envoy.cluster.upstream_rq_1xx
    (count)    		[Legacy] Aggregate HTTP 1xx response codes
    Shown as response
    envoy.cluster.upstream_rq_2xx
    (count)    		[Legacy] Aggregate HTTP 2xx response codes
    Shown as response
    envoy.cluster.upstream_rq_3xx
    (count)    		[Legacy] Aggregate HTTP 3xx response codes
    Shown as response
    envoy.cluster.upstream_rq_4xx
    (count)    		[Legacy] Aggregate HTTP 4xx response codes
    Shown as response
    envoy.cluster.upstream_rq_5xx
    (count)    		[Legacy] Aggregate HTTP 5xx response codes
    Shown as response
    envoy.cluster.canary.upstream_rq_completed
    (count)    		[Legacy] Total upstream canary requests completed
    Shown as response
    envoy.cluster.canary.upstream_rq_1xx
    (count)    		[Legacy] Upstream canary aggregate HTTP 1xx response codes
    Shown as response
    envoy.cluster.canary.upstream_rq_2xx
    (count)    		[Legacy] Upstream canary aggregate HTTP 2xx response codes
    Shown as response
    envoy.cluster.canary.upstream_rq_3xx
    (count)    		[Legacy] Upstream canary aggregate HTTP 3xx response codes
    Shown as response
    envoy.cluster.canary.upstream_rq_4xx
    (count)    		[Legacy] Upstream canary aggregate HTTP 4xx response codes
    Shown as response
    envoy.cluster.canary.upstream_rq_5xx
    (count)    		[Legacy] Upstream canary aggregate HTTP 5xx response codes
    Shown as response
    envoy.cluster.internal.upstream_rq_completed
    (count)    		[Legacy] Total internal origin requests completed
    Shown as response
    envoy.cluster.internal.upstream_rq_1xx
    (count)    		[Legacy] Internal origin aggregate HTTP 1xx response codes
    Shown as response
    envoy.cluster.internal.upstream_rq_2xx
    (count)    		[Legacy] Internal origin aggregate HTTP 2xx response codes
    Shown as response
    envoy.cluster.internal.upstream_rq_3xx
    (count)    		[Legacy] Internal origin aggregate HTTP 3xx response codes
    Shown as response
    envoy.cluster.internal.upstream_rq_4xx
    (count)    		[Legacy] Internal origin aggregate HTTP 4xx response codes
    Shown as response
    envoy.cluster.internal.upstream_rq_5xx
    (count)    		[Legacy] Internal origin aggregate HTTP 5xx response codes
    Shown as response
    envoy.cluster.external.upstream_rq_completed
    (count)    		[Legacy] Total external origin requests completed
    Shown as response
    envoy.cluster.external.upstream_rq_1xx
    (count)    		[Legacy] External origin aggregate HTTP 1xx response codes
    Shown as response
    envoy.cluster.external.upstream_rq_2xx
    (count)    		[Legacy] External origin aggregate HTTP 2xx response codes
    Shown as response
    envoy.cluster.external.upstream_rq_3xx
    (count)    		[Legacy] External origin aggregate HTTP 3xx response codes
    Shown as response
    envoy.cluster.external.upstream_rq_4xx
    (count)    		[Legacy] External origin aggregate HTTP 4xx response codes
    Shown as response
    envoy.cluster.external.upstream_rq_5xx
    (count)    		[Legacy] External origin aggregate HTTP 5xx response codes
    Shown as response
    envoy.cluster.zone.upstream_rq_1xx
    (count)    		[Legacy] Aggregate HTTP 1xx response codes
    Shown as response
    envoy.cluster.zone.upstream_rq_2xx
    (count)    		[Legacy] Aggregate HTTP 2xx response codes
    Shown as response
    envoy.cluster.zone.upstream_rq_3xx
    (count)    		[Legacy] Aggregate HTTP 3xx response codes
    Shown as response
    envoy.cluster.zone.upstream_rq_4xx
    (count)    		[Legacy] Aggregate HTTP 4xx response codes
    Shown as response
    envoy.cluster.zone.upstream_rq_5xx
    (count)    		[Legacy] Aggregate HTTP 5xx response codes
    Shown as response
    envoy.cluster.lb_healthy_panic
    (count)    		[Legacy] Total requests load balanced with the load balancer in panic mode
    Shown as request
    envoy.cluster.lb_zone_cluster_too_small
    (count)    		[Legacy] No zone aware routing because of small upstream cluster size
    envoy.cluster.lb_zone_routing_all_directly
    (count)    		[Legacy] Sending all requests directly to the same zone
    envoy.cluster.lb_zone_routing_sampled
    (count)    		[Legacy] Sending some requests to the same zone
    envoy.cluster.lb_zone_routing_cross_zone
    (count)    		[Legacy] Zone aware routing mode but have to send cross zone
    envoy.cluster.lb_local_cluster_not_ok
    (count)    		[Legacy] Local host set is not set or it is panic mode for local cluster
    envoy.cluster.lb_zone_number_differs
    (count)    		[Legacy] Number of zones in local and upstream cluster different
    envoy.cluster.lb_subsets_active
    (gauge)    		[Legacy] Number of currently available subsets
    envoy.cluster.lb_subsets_created
    (count)    		[Legacy] Number of subsets created
    envoy.cluster.lb_subsets_removed
    (count)    		[Legacy] Number of subsets removed due to no hosts
    envoy.cluster.lb_subsets_selected
    (count)    		[Legacy] Number of times any subset was selected for load balancing
    Shown as occurrence
    envoy.cluster.lb_subsets_fallback
    (count)    		[Legacy] Number of times the fallback policy was invoked
    Shown as occurrence
    envoy.cluster.lb_subsets_fallback_panic
    (count)    		[Legacy] Number of times the subset panic mode triggered
    Shown as occurrence
    envoy.cluster.update_empty
    (count)    		[Legacy] Total cluster membership updates ending with empty cluster load assignment and continuing with previous config
    Shown as occurrence
    envoy.cluster.lb_recalculate_zone_structures
    (count)    		[Legacy] The number of times locality aware routing structures are regenerated for fast decisions on upstream locality selection
    Shown as occurrence
    envoy.cluster.lb_zone_no_capacity_left
    (count)    		[Legacy] Total number of times ended with random zone selection due to rounding error
    Shown as occurrence
    envoy.http.tracing.random_sampling
    (count)    		[Legacy] Total number of traceable decisions by random sampling
    Shown as occurrence
    envoy.http.tracing.service_forced
    (count)    		[Legacy] Total number of traceable decisions by server runtime flag tracing.global_enabled
    Shown as occurrence
    envoy.http.tracing.client_enabled
    (count)    		[Legacy] Total number of traceable decisions by request header x-envoy-force-trace
    Shown as occurrence
    envoy.http.tracing.not_traceable
    (count)    		[Legacy] Total number of non-traceable decisions by request id
    Shown as occurrence
    envoy.http.tracing.health_check
    (count)    		[Legacy] Total number of non-traceable decisions by health check
    Shown as occurrence
    envoy.http.rq_direct_response
    (count)    		[Legacy] Total requests that resulted in a direct response
    Shown as request
    envoy.stats.overflow
    (count)    		[Legacy] Total number of times Envoy cannot allocate a statistic due to a shortage of shared memory
    Shown as error
    envoy.server.uptime
    (gauge)    		[Legacy] Current server uptime in seconds
    Shown as second
    envoy.server.memory_allocated
    (gauge)    		[Legacy] Current amount of allocated memory in bytes
    Shown as byte
    envoy.server.memory_heap_size
    (gauge)    		[Legacy] Current reserved heap size in bytes
    Shown as byte
    envoy.server.live
    (gauge)    		[Legacy] 1 if the server is not currently draining, 0 otherwise
    Shown as occurrence
    envoy.server.parent_connections
    (gauge)    		[Legacy] Total connections of the old Envoy process on hot restart
    Shown as connection
    envoy.server.total_connections
    (gauge)    		[Legacy] Total connections of both new and old Envoy processes
    Shown as connection
    envoy.server.version
    (gauge)    		[Legacy] Integer represented version number based on SCM revision
    Shown as item
    envoy.server.days_until_first_cert_expiring
    (gauge)    		[Legacy] Number of days until the next certificate being managed will expire
    Shown as day
    envoy.server.concurrency
    (gauge)    		[Legacy] Number of worker threads
    envoy.server.debug_assertion_failures
    (count)    		[Legacy] Number of debug assertion failures detected in a release build if compiled with -define logdebugassertinrelease=enabled or zero otherwise
    envoy.server.hot_restart_epoch
    (gauge)    		[Legacy] Current hot restart epoch
    envoy.server.state
    (gauge)    		[Legacy] Current State of the Server
    envoy.server.watchdog_mega_miss
    (count)    		[Legacy] Number of mega misses
    envoy.server.watchdog_miss
    (count)    		[Legacy] Number of standard misses
    envoy.filesystem.write_buffered
    (count)    		[Legacy] Total number of times file data is moved to Envoy's internal flush buffer
    Shown as occurrence
    envoy.filesystem.write_completed
    (count)    		[Legacy] Total number of times a file was written
    Shown as occurrence
    envoy.filesystem.flushed_by_timer
    (count)    		[Legacy] Total number of times internal flush buffers are written to a file due to flush timeout
    Shown as occurrence
    envoy.filesystem.reopen_failed
    (count)    		[Legacy] Total number of times a file was failed to be opened
    Shown as occurrence
    envoy.filesystem.write_total_buffered
    (gauge)    		[Legacy] Current total size of internal flush buffer in bytes
    Shown as byte
    envoy.vhost.vcluster.upstream_rq_time.0percentile
    (gauge)    		[Legacy] Request time milliseconds 0-percentile
    Shown as millisecond
    envoy.vhost.vcluster.upstream_rq_time.25percentile
    (gauge)    		[Legacy] Request time milliseconds 25-percentile
    Shown as millisecond
    envoy.vhost.vcluster.upstream_rq_time.50percentile
    (gauge)    		[Legacy] Request time milliseconds 50-percentile
    Shown as millisecond
    envoy.vhost.vcluster.upstream_rq_time.75percentile
    (gauge)    		[Legacy] Request time milliseconds 75-percentile
    Shown as millisecond
    envoy.vhost.vcluster.upstream_rq_time.90percentile
    (gauge)    		[Legacy] Request time milliseconds 90-percentile
    Shown as millisecond
    envoy.vhost.vcluster.upstream_rq_time.95percentile
    (gauge)    		[Legacy] Request time milliseconds 95-percentile
    Shown as millisecond
    envoy.vhost.vcluster.upstream_rq_time.99percentile
    (gauge)    		[Legacy] Request time milliseconds 99-percentile
    Shown as millisecond
    envoy.vhost.vcluster.upstream_rq_time.99_9percentile
    (gauge)    		[Legacy] Request time milliseconds 99.9-percentile
    Shown as millisecond
    envoy.vhost.vcluster.upstream_rq_time.100percentile
    (gauge)    		[Legacy] Request time milliseconds 100-percentile
    Shown as millisecond
    envoy.http.dynamodb.operation.upstream_rq_time.0percentile
    (gauge)    		[Legacy] Time spent on operation_name tag 0-percentile
    Shown as millisecond
    envoy.http.dynamodb.operation.upstream_rq_time.25percentile
    (gauge)    		[Legacy] Time spent on operation_name tag 25-percentile
    Shown as millisecond
    envoy.http.dynamodb.operation.upstream_rq_time.50percentile
    (gauge)    		[Legacy] Time spent on operation_name tag 50-percentile
    Shown as millisecond
    envoy.http.dynamodb.operation.upstream_rq_time.75percentile
    (gauge)    		[Legacy] Time spent on operation_name tag 75-percentile
    Shown as millisecond
    envoy.http.dynamodb.operation.upstream_rq_time.90percentile
    (gauge)    		[Legacy] Time spent on operation_name tag 90-percentile
    Shown as millisecond
    envoy.http.dynamodb.operation.upstream_rq_time.95percentile
    (gauge)    		[Legacy] Time spent on operation_name tag 95-percentile
    Shown as millisecond
    envoy.http.dynamodb.operation.upstream_rq_time.99percentile
    (gauge)    		[Legacy] Time spent on operation_name tag 99-percentile
    Shown as millisecond
    envoy.http.dynamodb.operation.upstream_rq_time.99_9percentile
    (gauge)    		[Legacy] Time spent on operation_name tag 99.9-percentile
    Shown as millisecond
    envoy.http.dynamodb.operation.upstream_rq_time.100percentile
    (gauge)    		[Legacy] Time spent on operation_name tag 100-percentile
    Shown as millisecond
    envoy.http.dynamodb.table.upstream_rq_time.0percentile
    (gauge)    		[Legacy] Time spent on table_name tag table 0-percentile
    Shown as millisecond
    envoy.http.dynamodb.table.upstream_rq_time.25percentile
    (gauge)    		[Legacy] Time spent on table_name tag table 25-percentile
    Shown as millisecond
    envoy.http.dynamodb.table.upstream_rq_time.50percentile
    (gauge)    		[Legacy] Time spent on table_name tag table 50-percentile
    Shown as millisecond
    envoy.http.dynamodb.table.upstream_rq_time.75percentile
    (gauge)    		[Legacy] Time spent on table_name tag table 75-percentile
    Shown as millisecond
    envoy.http.dynamodb.table.upstream_rq_time.90percentile
    (gauge)    		[Legacy] Time spent on table_name tag table 90-percentile
    Shown as millisecond
    envoy.http.dynamodb.table.upstream_rq_time.95percentile
    (gauge)    		[Legacy] Time spent on table_name tag table 95-percentile
    Shown as millisecond
    envoy.http.dynamodb.table.upstream_rq_time.99percentile
    (gauge)    		[Legacy] Time spent on table_name tag table 99-percentile
    Shown as millisecond
    envoy.http.dynamodb.table.upstream_rq_time.99_9percentile
    (gauge)    		[Legacy] Time spent on table_name tag table 99.9-percentile
    Shown as millisecond
    envoy.http.dynamodb.table.upstream_rq_time.100percentile
    (gauge)    		[Legacy] Time spent on table_name tag table 100-percentile
    Shown as millisecond
    envoy.mongo.cmd.reply_num_docs.0percentile
    (gauge)    		[Legacy] Number of documents in reply 0-percentile
    Shown as document
    envoy.mongo.cmd.reply_num_docs.25percentile
    (gauge)    		[Legacy] Number of documents in reply 25-percentile
    Shown as document
    envoy.mongo.cmd.reply_num_docs.50percentile
    (gauge)    		[Legacy] Number of documents in reply 50-percentile
    Shown as document
    envoy.mongo.cmd.reply_num_docs.75percentile
    (gauge)    		[Legacy] Number of documents in reply 75-percentile
    Shown as document
    envoy.mongo.cmd.reply_num_docs.90percentile
    (gauge)    		[Legacy] Number of documents in reply 90-percentile
    Shown as document
    envoy.mongo.cmd.reply_num_docs.95percentile
    (gauge)    		[Legacy] Number of documents in reply 95-percentile
    Shown as document
    envoy.mongo.cmd.reply_num_docs.99percentile
    (gauge)    		[Legacy] Number of documents in reply 99-percentile
    Shown as document
    envoy.mongo.cmd.reply_num_docs.99_9percentile
    (gauge)    		[Legacy] Number of documents in reply 99.9-percentile
    Shown as document
    envoy.mongo.cmd.reply_num_docs.100percentile
    (gauge)    		[Legacy] Number of documents in reply 100-percentile
    Shown as document
    envoy.mongo.cmd.reply_size.0percentile
    (gauge)    		[Legacy] Size of the reply in bytes 0-percentile
    Shown as byte
    envoy.mongo.cmd.reply_size.25percentile
    (gauge)    		[Legacy] Size of the reply in bytes 25-percentile
    Shown as byte
    envoy.mongo.cmd.reply_size.50percentile
    (gauge)    		[Legacy] Size of the reply in bytes 50-percentile
    Shown as byte
    envoy.mongo.cmd.reply_size.75percentile
    (gauge)    		[Legacy] Size of the reply in bytes 75-percentile
    Shown as byte
    envoy.mongo.cmd.reply_size.90percentile
    (gauge)    		[Legacy] Size of the reply in bytes 90-percentile
    Shown as byte
    envoy.mongo.cmd.reply_size.95percentile
    (gauge)    		[Legacy] Size of the reply in bytes 95-percentile
    Shown as byte
    envoy.mongo.cmd.reply_size.99percentile
    (gauge)    		[Legacy] Size of the reply in bytes 99-percentile
    Shown as byte
    envoy.mongo.cmd.reply_size.99_9percentile
    (gauge)    		[Legacy] Size of the reply in bytes 99.9-percentile
    Shown as byte
    envoy.mongo.cmd.reply_size.100percentile
    (gauge)    		[Legacy] Size of the reply in bytes 100-percentile
    Shown as byte
    envoy.mongo.cmd.reply_time_ms.0percentile
    (gauge)    		[Legacy] Command time in milliseconds 0-percentile
    Shown as millisecond
    envoy.mongo.cmd.reply_time_ms.25percentile
    (gauge)    		[Legacy] Command time in milliseconds 25-percentile
    Shown as millisecond
    envoy.mongo.cmd.reply_time_ms.50percentile
    (gauge)    		[Legacy] Command time in milliseconds 50-percentile
    Shown as millisecond
    envoy.mongo.cmd.reply_time_ms.75percentile
    (gauge)    		[Legacy] Command time in milliseconds 75-percentile
    Shown as millisecond
    envoy.mongo.cmd.reply_time_ms.90percentile
    (gauge)    		[Legacy] Command time in milliseconds 90-percentile
    Shown as millisecond
    envoy.mongo.cmd.reply_time_ms.95percentile
    (gauge)    		[Legacy] Command time in milliseconds 95-percentile
    Shown as millisecond
    envoy.mongo.cmd.reply_time_ms.99percentile
    (gauge)    		[Legacy] Command time in milliseconds 99-percentile
    Shown as millisecond
    envoy.mongo.cmd.reply_time_ms.99_9percentile
    (gauge)    		[Legacy] Command time in milliseconds 99.9-percentile
    Shown as millisecond
    envoy.mongo.cmd.reply_time_ms.100percentile
    (gauge)    		[Legacy] Command time in milliseconds 100-percentile
    Shown as millisecond
    envoy.mongo.collection.query.reply_num_docs.0percentile
    (gauge)    		[Legacy] Number of documents in reply 0-percentile
    Shown as document
    envoy.mongo.collection.query.reply_num_docs.25percentile
    (gauge)    		[Legacy] Number of documents in reply 25-percentile
    Shown as document
    envoy.mongo.collection.query.reply_num_docs.50percentile
    (gauge)    		[Legacy] Number of documents in reply 50-percentile
    Shown as document
    envoy.mongo.collection.query.reply_num_docs.75percentile
    (gauge)    		[Legacy] Number of documents in reply 75-percentile
    Shown as document
    envoy.mongo.collection.query.reply_num_docs.90percentile
    (gauge)    		[Legacy] Number of documents in reply 90-percentile
    Shown as document
    envoy.mongo.collection.query.reply_num_docs.95percentile
    (gauge)    		[Legacy] Number of documents in reply 95-percentile
    Shown as document
    envoy.mongo.collection.query.reply_num_docs.99percentile
    (gauge)    		[Legacy] Number of documents in reply 99-percentile
    Shown as document
    envoy.mongo.collection.query.reply_num_docs.99_9percentile
    (gauge)    		[Legacy] Number of documents in reply 99.9-percentile
    Shown as document
    envoy.mongo.collection.query.reply_num_docs.100percentile
    (gauge)    		[Legacy] Number of documents in reply 100-percentile
    Shown as document
    envoy.mongo.collection.query.reply_size.0percentile
    (gauge)    		[Legacy] Size of the reply in bytes 0-percentile
    Shown as byte
    envoy.mongo.collection.query.reply_size.25percentile
    (gauge)    		[Legacy] Size of the reply in bytes 25-percentile
    Shown as byte
    envoy.mongo.collection.query.reply_size.50percentile
    (gauge)    		[Legacy] Size of the reply in bytes 50-percentile
    Shown as byte
    envoy.mongo.collection.query.reply_size.75percentile
    (gauge)    		[Legacy] Size of the reply in bytes 75-percentile
    Shown as byte
    envoy.mongo.collection.query.reply_size.90percentile
    (gauge)    		[Legacy] Size of the reply in bytes 90-percentile
    Shown as byte
    envoy.mongo.collection.query.reply_size.95percentile
    (gauge)    		[Legacy] Size of the reply in bytes 95-percentile
    Shown as byte
    envoy.mongo.collection.query.reply_size.99percentile
    (gauge)    		[Legacy] Size of the reply in bytes 99-percentile
    Shown as byte
    envoy.mongo.collection.query.reply_size.99_9percentile
    (gauge)    		[Legacy] Size of the reply in bytes 99.9-percentile
    Shown as byte
    envoy.mongo.collection.query.reply_size.100percentile
    (gauge)    		[Legacy] Size of the reply in bytes 100-percentile
    Shown as byte
    envoy.mongo.collection.query.reply_time_ms.0percentile
    (gauge)    		[Legacy] Query time in milliseconds 0-percentile
    Shown as millisecond
    envoy.mongo.collection.query.reply_time_ms.25percentile
    (gauge)    		[Legacy] Query time in milliseconds 25-percentile
    Shown as millisecond
    envoy.mongo.collection.query.reply_time_ms.50percentile
    (gauge)    		[Legacy] Query time in milliseconds 50-percentile
    Shown as millisecond
    envoy.mongo.collection.query.reply_time_ms.75percentile
    (gauge)    		[Legacy] Query time in milliseconds 75-percentile
    Shown as millisecond
    envoy.mongo.collection.query.reply_time_ms.90percentile
    (gauge)    		[Legacy] Query time in milliseconds 90-percentile
    Shown as millisecond
    envoy.mongo.collection.query.reply_time_ms.95percentile
    (gauge)    		[Legacy] Query time in milliseconds 95-percentile
    Shown as millisecond
    envoy.mongo.collection.query.reply_time_ms.99percentile
    (gauge)    		[Legacy] Query time in milliseconds 99-percentile
    Shown as millisecond
    envoy.mongo.collection.query.reply_time_ms.99_9percentile
    (gauge)    		[Legacy] Query time in milliseconds 99.9-percentile
    Shown as millisecond
    envoy.mongo.collection.query.reply_time_ms.100percentile
    (gauge)    		[Legacy] Query time in milliseconds 100-percentile
    Shown as millisecond
    envoy.mongo.collection.callsite.query.reply_num_docs.0percentile
    (gauge)    		[Legacy] Number of documents in reply for the callsite tag 0-percentile
    Shown as document
    envoy.mongo.collection.callsite.query.reply_num_docs.25percentile
    (gauge)    		[Legacy] Number of documents in reply for the callsite tag 25-percentile
    Shown as document
    envoy.mongo.collection.callsite.query.reply_num_docs.50percentile
    (gauge)    		[Legacy] Number of documents in reply for the callsite tag 50-percentile
    Shown as document
    envoy.mongo.collection.callsite.query.reply_num_docs.75percentile
    (gauge)    		[Legacy] Number of documents in reply for the callsite tag 75-percentile
    Shown as document
    envoy.mongo.collection.callsite.query.reply_num_docs.90percentile
    (gauge)    		[Legacy] Number of documents in reply for the callsite tag 90-percentile
    Shown as document
    envoy.mongo.collection.callsite.query.reply_num_docs.95percentile
    (gauge)    		[Legacy] Number of documents in reply for the callsite tag 95-percentile
    Shown as document
    envoy.mongo.collection.callsite.query.reply_num_docs.99percentile
    (gauge)    		[Legacy] Number of documents in reply for the callsite tag 99-percentile
    Shown as document
    envoy.mongo.collection.callsite.query.reply_num_docs.99_9percentile
    (gauge)    		[Legacy] Number of documents in reply for the callsite tag 99.9-percentile
    Shown as document
    envoy.mongo.collection.callsite.query.reply_num_docs.100percentile
    (gauge)    		[Legacy] Number of documents in reply for the callsite tag 100-percentile
    Shown as document
    envoy.mongo.collection.callsite.query.reply_size.0percentile
    (gauge)    		[Legacy] Size of the reply in bytes for the callsite tag 0-percentile
    Shown as byte
    envoy.mongo.collection.callsite.query.reply_size.25percentile
    (gauge)    		[Legacy] Size of the reply in bytes for the callsite tag 25-percentile
    Shown as byte
    envoy.mongo.collection.callsite.query.reply_size.50percentile
    (gauge)    		[Legacy] Size of the reply in bytes for the callsite tag 50-percentile
    Shown as byte
    envoy.mongo.collection.callsite.query.reply_size.75percentile
    (gauge)    		[Legacy] Size of the reply in bytes for the callsite tag 75-percentile
    Shown as byte
    envoy.mongo.collection.callsite.query.reply_size.90percentile
    (gauge)    		[Legacy] Size of the reply in bytes for the callsite tag 90-percentile
    Shown as byte
    envoy.mongo.collection.callsite.query.reply_size.95percentile
    (gauge)    		[Legacy] Size of the reply in bytes for the callsite tag 95-percentile
    Shown as byte
    envoy.mongo.collection.callsite.query.reply_size.99percentile
    (gauge)    		[Legacy] Size of the reply in bytes for the callsite tag 99-percentile
    Shown as byte
    envoy.mongo.collection.callsite.query.reply_size.99_9percentile
    (gauge)    		[Legacy] Size of the reply in bytes for the callsite tag 99.9-percentile
    Shown as byte
    envoy.mongo.collection.callsite.query.reply_size.100percentile
    (gauge)    		[Legacy] Size of the reply in bytes for the callsite tag 100-percentile
    Shown as byte
    envoy.mongo.collection.callsite.query.reply_time_ms.0percentile
    (gauge)    		[Legacy] Query time in milliseconds for the callsite tag 0-percentile
    Shown as millisecond
    envoy.mongo.collection.callsite.query.reply_time_ms.25percentile
    (gauge)    		[Legacy] Query time in milliseconds for the callsite tag 25-percentile
    Shown as millisecond
    envoy.mongo.collection.callsite.query.reply_time_ms.50percentile
    (gauge)    		[Legacy] Query time in milliseconds for the callsite tag 50-percentile
    Shown as millisecond
    envoy.mongo.collection.callsite.query.reply_time_ms.75percentile
    (gauge)    		[Legacy] Query time in milliseconds for the callsite tag 75-percentile
    Shown as millisecond
    envoy.mongo.collection.callsite.query.reply_time_ms.90percentile
    (gauge)    		[Legacy] Query time in milliseconds for the callsite tag 90-percentile
    Shown as millisecond
    envoy.mongo.collection.callsite.query.reply_time_ms.95percentile
    (gauge)    		[Legacy] Query time in milliseconds for the callsite tag 95-percentile
    Shown as millisecond
    envoy.mongo.collection.callsite.query.reply_time_ms.99percentile
    (gauge)    		[Legacy] Query time in milliseconds for the callsite tag 99-percentile
    Shown as millisecond
    envoy.mongo.collection.callsite.query.reply_time_ms.99_9percentile
    (gauge)    		[Legacy] Query time in milliseconds for the callsite tag 99.9-percentile
    Shown as millisecond
    envoy.mongo.collection.callsite.query.reply_time_ms.100percentile
    (gauge)    		[Legacy] Query time in milliseconds for the callsite tag 100-percentile
    Shown as millisecond
    envoy.listener.downstream_cx_length_ms.0percentile
    (gauge)    		[Legacy] Connection length in milliseconds 0-percentile
    Shown as millisecond
    envoy.listener.downstream_cx_length_ms.25percentile
    (gauge)    		[Legacy] Connection length in milliseconds 25-percentile
    Shown as millisecond
    envoy.listener.downstream_cx_length_ms.50percentile
    (gauge)    		[Legacy] Connection length in milliseconds 50-percentile
    Shown as millisecond
    envoy.listener.downstream_cx_length_ms.75percentile
    (gauge)    		[Legacy] Connection length in milliseconds 75-percentile
    Shown as millisecond
    envoy.listener.downstream_cx_length_ms.90percentile
    (gauge)    		[Legacy] Connection length in milliseconds 90-percentile
    Shown as millisecond
    envoy.listener.downstream_cx_length_ms.95percentile
    (gauge)    		[Legacy] Connection length in milliseconds 95-percentile
    Shown as millisecond
    envoy.listener.downstream_cx_length_ms.99percentile
    (gauge)    		[Legacy] Connection length in milliseconds 99-percentile
    Shown as millisecond
    envoy.listener.downstream_cx_length_ms.99_5percentile
    (gauge)    		[Legacy] Connection length in milliseconds 99.5-percentile
    Shown as millisecond
    envoy.listener.downstream_cx_length_ms.99_9percentile
    (gauge)    		[Legacy] Connection length in milliseconds 99.9-percentile
    Shown as millisecond
    envoy.listener.downstream_cx_length_ms.100percentile
    (gauge)    		[Legacy] Connection length in milliseconds 100-percentile
    Shown as millisecond
    envoy.http.downstream_cx_length_ms.0percentile
    (gauge)    		[Legacy] Connection length in milliseconds 0-percentile
    Shown as millisecond
    envoy.http.downstream_cx_length_ms.25percentile
    (gauge)    		[Legacy] Connection length in milliseconds 25-percentile
    Shown as millisecond
    envoy.http.downstream_cx_length_ms.50percentile
    (gauge)    		[Legacy] Connection length in milliseconds 50-percentile
    Shown as millisecond
    envoy.http.downstream_cx_length_ms.75percentile
    (gauge)    		[Legacy] Connection length in milliseconds 75-percentile
    Shown as millisecond
    envoy.http.downstream_cx_length_ms.90percentile
    (gauge)    		[Legacy] Connection length in milliseconds 90-percentile
    Shown as millisecond
    envoy.http.downstream_cx_length_ms.95percentile
    (gauge)    		[Legacy] Connection length in milliseconds 95-percentile
    Shown as millisecond
    envoy.http.downstream_cx_length_ms.99percentile
    (gauge)    		[Legacy] Connection length in milliseconds 99-percentile
    Shown as millisecond
    envoy.http.downstream_cx_length_ms.99_5percentile
    (gauge)    		[Legacy] Connection length in milliseconds 99.5-percentile
    Shown as millisecond
    envoy.http.downstream_cx_length_ms.99_9percentile
    (gauge)    		[Legacy] Connection length in milliseconds 99.9-percentile
    Shown as millisecond
    envoy.http.downstream_cx_length_ms.100percentile
    (gauge)    		[Legacy] Connection length in milliseconds 100-percentile
    Shown as millisecond
    envoy.http.downstream_rq_time.0percentile
    (gauge)    		[Legacy] Request time in milliseconds 0-percentile
    Shown as millisecond
    envoy.http.downstream_rq_time.25percentile
    (gauge)    		[Legacy] Request time in milliseconds 25-percentile
    Shown as millisecond
    envoy.http.downstream_rq_time.50percentile
    (gauge)    		[Legacy] Request time in milliseconds 50-percentile
    Shown as millisecond
    envoy.http.downstream_rq_time.75percentile
    (gauge)    		[Legacy] Request time in milliseconds 75-percentile
    Shown as millisecond
    envoy.http.downstream_rq_time.90percentile
    (gauge)    		[Legacy] Request time in milliseconds 90-percentile
    Shown as millisecond
    envoy.http.downstream_rq_time.95percentile
    (gauge)    		[Legacy] Request time in milliseconds 95-percentile
    Shown as millisecond
    envoy.http.downstream_rq_time.99percentile
    (gauge)    		[Legacy] Request time in milliseconds 99-percentile
    Shown as millisecond
    envoy.http.downstream_rq_time.99_5percentile
    (gauge)    		[Legacy] Request time in milliseconds 99.5-percentile
    Shown as millisecond
    envoy.http.downstream_rq_time.99_9percentile
    (gauge)    		[Legacy] Request time in milliseconds 99.9-percentile
    Shown as millisecond
    envoy.http.downstream_rq_time.100percentile
    (gauge)    		[Legacy] Request time in milliseconds 100-percentile
    Shown as millisecond
    envoy.cluster.upstream_cx_connect_ms.0percentile
    (gauge)    		[Legacy] Connection establishment in milliseconds 0-percentile
    Shown as millisecond
    envoy.cluster.upstream_cx_connect_ms.25percentile
    (gauge)    		[Legacy] Connection establishment in milliseconds 25-percentile
    Shown as millisecond
    envoy.cluster.upstream_cx_connect_ms.50percentile
    (gauge)    		[Legacy] Connection establishment in milliseconds 50-percentile
    Shown as millisecond
    envoy.cluster.upstream_cx_connect_ms.75percentile
    (gauge)    		[Legacy] Connection establishment in milliseconds 75-percentile
    Shown as millisecond
    envoy.cluster.upstream_cx_connect_ms.90percentile
    (gauge)    		[Legacy] Connection establishment in milliseconds 90-percentile
    Shown as millisecond
    envoy.cluster.upstream_cx_connect_ms.95percentile
    (gauge)    		[Legacy] Connection establishment in milliseconds 95-percentile
    Shown as millisecond
    envoy.cluster.upstream_cx_connect_ms.99percentile
    (gauge)    		[Legacy] Connection establishment in milliseconds 99-percentile
    Shown as millisecond
    envoy.cluster.upstream_cx_connect_ms.99_5percentile
    (gauge)    		[Legacy] Connection establishment in milliseconds 99.5-percentile
    Shown as millisecond
    envoy.cluster.upstream_cx_connect_ms.99_9percentile
    (gauge)    		[Legacy] Connection establishment in milliseconds 99.9-percentile
    Shown as millisecond
    envoy.cluster.upstream_cx_connect_ms.100percentile
    (gauge)    		[Legacy] Connection establishment in milliseconds 100-percentile
    Shown as millisecond
    envoy.cluster.upstream_cx_length_ms.0percentile
    (gauge)    		[Legacy] Connection length in milliseconds 0-percentile
    Shown as millisecond
    envoy.cluster.upstream_cx_length_ms.25percentile
    (gauge)    		[Legacy] Connection length in milliseconds 25-percentile
    Shown as millisecond
    envoy.cluster.upstream_cx_length_ms.50percentile
    (gauge)    		[Legacy] Connection length in milliseconds 50-percentile
    Shown as millisecond
    envoy.cluster.upstream_cx_length_ms.75percentile
    (gauge)    		[Legacy] Connection length in milliseconds 75-percentile
    Shown as millisecond
    envoy.cluster.upstream_cx_length_ms.90percentile
    (gauge)    		[Legacy] Connection length in milliseconds 90-percentile
    Shown as millisecond
    envoy.cluster.upstream_cx_length_ms.95percentile
    (gauge)    		[Legacy] Connection length in milliseconds 95-percentile
    Shown as millisecond
    envoy.cluster.upstream_cx_length_ms.99percentile
    (gauge)    		[Legacy] Connection length in milliseconds 99-percentile
    Shown as millisecond
    envoy.cluster.upstream_cx_length_ms.99_5percentile
    (gauge)    		[Legacy] Connection length in milliseconds 99.5-percentile
    Shown as millisecond
    envoy.cluster.upstream_cx_length_ms.99_9percentile
    (gauge)    		[Legacy] Connection length in milliseconds 99.9-percentile
    Shown as millisecond
    envoy.cluster.upstream_cx_length_ms.100percentile
    (gauge)    		[Legacy] Connection length in milliseconds 100-percentile
    Shown as millisecond
    envoy.cluster.upstream_rq_time.0percentile
    (gauge)    		[Legacy] Request time in milliseconds 0-percentile
    Shown as millisecond
    envoy.cluster.upstream_rq_time.25percentile
    (gauge)    		[Legacy] Request time in milliseconds 25-percentile
    Shown as millisecond
    envoy.cluster.upstream_rq_time.50percentile
    (gauge)    		[Legacy] Request time in milliseconds 50-percentile
    Shown as millisecond
    envoy.cluster.upstream_rq_time.75percentile
    (gauge)    		[Legacy] Request time in milliseconds 75-percentile
    Shown as millisecond
    envoy.cluster.upstream_rq_time.90percentile
    (gauge)    		[Legacy] Request time in milliseconds 90-percentile
    Shown as millisecond
    envoy.cluster.upstream_rq_time.95percentile
    (gauge)    		[Legacy] Request time in milliseconds 95-percentile
    Shown as millisecond
    envoy.cluster.upstream_rq_time.99percentile
    (gauge)    		[Legacy] Request time in milliseconds 99-percentile
    Shown as millisecond
    envoy.cluster.upstream_rq_time.99_5percentile
    (gauge)    		[Legacy] Request time in milliseconds 99-percentile
    Shown as millisecond
    envoy.cluster.upstream_rq_time.99_9percentile
    (gauge)    		[Legacy] Request time in milliseconds 99.9-percentile
    Shown as millisecond
    envoy.cluster.upstream_rq_time.100percentile
    (gauge)    		[Legacy] Request time in milliseconds 100-percentile
    Shown as millisecond
    envoy.cluster.canary.upstream_rq_time.0percentile
    (gauge)    		[Legacy] Upstream canary request time in milliseconds 0-percentile
    Shown as millisecond
    envoy.cluster.canary.upstream_rq_time.25percentile
    (gauge)    		[Legacy] Upstream canary request time in milliseconds 25-percentile
    Shown as millisecond
    envoy.cluster.canary.upstream_rq_time.50percentile
    (gauge)    		[Legacy] Upstream canary request time in milliseconds 50-percentile
    Shown as millisecond
    envoy.cluster.canary.upstream_rq_time.75percentile
    (gauge)    		[Legacy] Upstream canary request time in milliseconds 75-percentile
    Shown as millisecond
    envoy.cluster.canary.upstream_rq_time.90percentile
    (gauge)    		[Legacy] Upstream canary request time in milliseconds 90-percentile
    Shown as millisecond
    envoy.cluster.canary.upstream_rq_time.95percentile
    (gauge)    		[Legacy] Upstream canary request time in milliseconds 95-percentile
    Shown as millisecond
    envoy.cluster.canary.upstream_rq_time.99percentile
    (gauge)    		[Legacy] Upstream canary request time in milliseconds 99-percentile
    Shown as millisecond
    envoy.cluster.canary.upstream_rq_time.99_9percentile
    (gauge)    		[Legacy] Upstream canary request time in milliseconds 99.9-percentile
    Shown as millisecond
    envoy.cluster.canary.upstream_rq_time.100percentile
    (gauge)    		[Legacy] Upstream canary request time in milliseconds 100-percentile
    Shown as millisecond
    envoy.cluster.internal.upstream_rq_time.0percentile
    (gauge)    		[Legacy] Internal origin request time in milliseconds 0-percentile
    Shown as millisecond
    envoy.cluster.internal.upstream_rq_time.25percentile
    (gauge)    		[Legacy] Internal origin request time in milliseconds 25-percentile
    Shown as millisecond
    envoy.cluster.internal.upstream_rq_time.50percentile
    (gauge)    		[Legacy] Internal origin request time in milliseconds 50-percentile
    Shown as millisecond
    envoy.cluster.internal.upstream_rq_time.75percentile
    (gauge)    		[Legacy] Internal origin request time in milliseconds 75-percentile
    Shown as millisecond
    envoy.cluster.internal.upstream_rq_time.90percentile
    (gauge)    		[Legacy] Internal origin request time in milliseconds 90-percentile
    Shown as millisecond
    envoy.cluster.internal.upstream_rq_time.95percentile
    (gauge)    		[Legacy] Internal origin request time in milliseconds 95-percentile
    Shown as millisecond
    envoy.cluster.internal.upstream_rq_time.99percentile
    (gauge)    		[Legacy] Internal origin request time in milliseconds 99-percentile
    Shown as millisecond
    envoy.cluster.internal.upstream_rq_time.99_9percentile
    (gauge)    		[Legacy] Internal origin request time in milliseconds 99.9-percentile
    Shown as millisecond
    envoy.cluster.internal.upstream_rq_time.100percentile
    (gauge)    		[Legacy] Internal origin request time in milliseconds 100-percentile
    Shown as millisecond
    envoy.cluster.external.upstream_rq_time.0percentile
    (gauge)    		[Legacy] External origin request time in milliseconds 0-percentile
    Shown as millisecond
    envoy.cluster.external.upstream_rq_time.25percentile
    (gauge)    		[Legacy] External origin request time in milliseconds 25-percentile
    Shown as millisecond
    envoy.cluster.external.upstream_rq_time.50percentile
    (gauge)    		[Legacy] External origin request time in milliseconds 50-percentile
    Shown as millisecond
    envoy.cluster.external.upstream_rq_time.75percentile
    (gauge)    		[Legacy] External origin request time in milliseconds 75-percentile
    Shown as millisecond
    envoy.cluster.external.upstream_rq_time.90percentile
    (gauge)    		[Legacy] External origin request time in milliseconds 90-percentile
    Shown as millisecond
    envoy.cluster.external.upstream_rq_time.95percentile
    (gauge)    		[Legacy] External origin request time in milliseconds 95-percentile
    Shown as millisecond
    envoy.cluster.external.upstream_rq_time.99percentile
    (gauge)    		[Legacy] External origin request time in milliseconds 99-percentile
    Shown as millisecond
    envoy.cluster.external.upstream_rq_time.99_5percentile
    (gauge)    		[Legacy] External origin request time in milliseconds 99.5-percentile
    Shown as millisecond
    envoy.cluster.external.upstream_rq_time.99_9percentile
    (gauge)    		[Legacy] External origin request time in milliseconds 99.9-percentile
    Shown as millisecond
    envoy.cluster.external.upstream_rq_time.100percentile
    (gauge)    		[Legacy] External origin request time in milliseconds 100-percentile
    Shown as millisecond
    envoy.cluster.zone.upstream_rq_time.0percentile
    (gauge)    		[Legacy] Zone request time in milliseconds 0-percentile
    Shown as millisecond
    envoy.cluster.zone.upstream_rq_time.25percentile
    (gauge)    		[Legacy] Zone request time in milliseconds 25-percentile
    Shown as millisecond
    envoy.cluster.zone.upstream_rq_time.50percentile
    (gauge)    		[Legacy] Zone request time in milliseconds 50-percentile
    Shown as millisecond
    envoy.cluster.zone.upstream_rq_time.75percentile
    (gauge)    		[Legacy] Zone request time in milliseconds 75-percentile
    Shown as millisecond
    envoy.cluster.zone.upstream_rq_time.90percentile
    (gauge)    		[Legacy] Zone request time in milliseconds 90-percentile
    Shown as millisecond
    envoy.cluster.zone.upstream_rq_time.95percentile
    (gauge)    		[Legacy] Zone request time in milliseconds 95-percentile
    Shown as millisecond
    envoy.cluster.zone.upstream_rq_time.99percentile
    (gauge)    		[Legacy] Zone request time in milliseconds 99-percentile
    Shown as millisecond
    envoy.cluster.zone.upstream_rq_time.99_9percentile
    (gauge)    		[Legacy] Zone request time in milliseconds 99.9-percentile
    Shown as millisecond
    envoy.cluster.zone.upstream_rq_time.100percentile
    (gauge)    		[Legacy] Zone request time in milliseconds 100-percentile
    Shown as millisecond
    envoy.sds.key_rotation_failed
    (count)    		[Legacy] [API v3 only] Total number of filesystem key rotations that failed outside of an SDS update.
    envoy.access_logs.grpc_access_log.logs_dropped
    (count)    		[Legacy] Number of GRPC Access Logs dropped
    envoy.access_logs.grpc_access_log.logs_written
    (count)    		[Legacy] Number of GRPC Access Logs written
    envoy.access_logs.grpc_access_log.logs_dropped.count
    (count)    		[OpenMetrics V2] Count of GRPC Access Logs dropped
    envoy.access_logs.grpc_access_log.logs_written.count
    (count)    		[OpenMetrics V2] Count of GRPC Access Logs written
    envoy.http_local_rate_limit.enabled
    (count)    		[Legacy] Total number of requests for which the rate limiter was consulted
    Shown as request
    envoy.http_local_rate_limit.enforced
    (count)    		[Legacy] Total number of requests for which rate limiting was applied (e.g.: 429 returned)
    Shown as request
    envoy.http_local_rate_limit.rate_limited
    (count)    		[Legacy] Total number of responses without an available token (but not necessarily enforced)
    Shown as request
    envoy.http_local_rate_limit.ok
    (count)    		[Legacy] Total number of under the limit responses from the token bucket
    Shown as request
    envoy.http.rbac.allowed
    (count)    		[Legacy] Total requests that were allowed access
    Shown as request
    envoy.http.rbac.denied
    (count)    		[Legacy] Total requests that were denied access
    Shown as request
    envoy.http.rbac.shadow_allowed
    (count)    		[Legacy] Total requests that would be allowed access by the filter's shadow rules
    Shown as request
    envoy.http.rbac.shadow_denied
    (count)    		[Legacy] Total requests that would be denied access by the filter's shadow rules
    Shown as request
    envoy.cluster.client_ssl_socket_factory.downstream_context_secrets_not_ready.count
    (count)    		[OpenMetrics V2] The count of SSL context updates for the listener server performed by Secret Discovery Service.
    envoy.cluster.client_ssl_socket_factory.ssl_context_update_by_sds.count
    (count)    		[OpenMetrics V2] The count of upstream SSL context secrets of the listener server that are not ready.
    envoy.cluster.client_ssl_socket_factory.upstream_context_secrets_not_ready.count
    (count)    		[OpenMetrics V2] The count of downstream SSL context secrets of the listener server that are not ready.
    envoy.listener.server_ssl_socket_factory.downstream_context_secrets_not_ready.count
    (count)    		[OpenMetrics V2] The count of SSL context updates for the client's SSL socket factory performed by Secret Discovery Service.
    envoy.listener.server_ssl_socket_factory.ssl_context_update_by_sds.count
    (count)    		[OpenMetrics V2] The count of upstream SSL context secrets of the client's SSL socket factory that are not ready.
    envoy.listener.server_ssl_socket_factory.upstream_context_secrets_not_ready.count
    (count)    		[OpenMetrics V2] The count of downstream SSL context secrets for the client SSL socket factory that are not yet ready.
    envoy.tls_inspector.client_hello_too_large.count
    (count)    		[OpenMetrics V2] Total unreasonably large client hello received
    envoy.tls_inspector.tls.found.count
    (count)    		[OpenMetrics V2] Total number of times TLS was found
    envoy.tls_inspector.tls.not_found.count
    (count)    		[OpenMetrics V2] Total number of times TLS was not found
    envoy.tls_inspector.alpn.found.count
    (count)    		[OpenMetrics V2] Total number of times Application-Layer Protocol Negotiation was successful
    envoy.tls_inspector.alpn.not_found.count
    (count)    		[OpenMetrics V2] Total number of times Application-Layer Protocol Negotiation has failed
    envoy.tls_inspector.sni.found.count
    (count)    		[OpenMetrics V2] Total number of times Server Name Indication was found
    envoy.tls_inspector.sni.not_found.count
    (count)    		[OpenMetrics V2] Total number of times Server Name Indication was not found
    envoy.tls_inspector.bytes_processed.bucket
    (count)    		[OpenMetrics V2] Records sizes which records the number of bytes the tls_inspector processed while analyzing for tls usage
    envoy.tls_inspector.bytes_processed.count
    (count)    		[OpenMetrics V2] Count of records sizes which records the number of bytes the tls_inspector processed while analyzing for tls usage
    envoy.tls_inspector.bytes_processed.sum
    (count)    		[OpenMetrics V2] Total sum of records sizes which records the number of bytes the tls_inspector processed while analyzing for tls usage

    See metrics.py for a list of tags sent by each metric.

    Events

    The Envoy check does not include any events.

    Service Checks

    envoy.can_connect
    Returns CRITICAL if the agent can’t connect to Envoy to collect metrics, otherwise OK.
    Statuses: ok, critical

    envoy.openmetrics.health
    Returns CRITICAL if the agent can’t connect to Envoy to collect metrics, otherwise OK.
    Statuses: ok, critical

    Troubleshooting

    Common problems

    Endpoint /server_info unreachable

    • Disable the collect_server_info option in your Envoy configuration, if the endpoint is not available in your Envoy environment, to minimize error logs.

    Note: Envoy version data is not collected.

    Need help? Contact Datadog support.