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Supported OS
Whether you use Redis as a database, cache, or message queue, this integration tracks problems with your Redis servers, cloud service, and the parts of your infrastructure they serve. Use the Datadog Agent’s Redis check to collect metrics related to:
The Redis check is included in the Datadog Agent package, so you don’t need to install anything else on your Redis servers.
To configure this check for an Agent running on a host:
Edit the redisdb.d/conf.yaml
file, in the conf.d/
folder at the root of your Agent’s configuration directory. The following parameters may require updating. See the sample redisdb.d/conf.yaml for all available configuration options.
init_config:
instances:
## @param host - string - required
## Enter the host to connect to.
- host: localhost
## @param port - integer - required
## Enter the port of the host to connect to.
port: 6379
## @param username - string - optional
## The username to use for the connection. Redis 6+ only.
#
# username: <USERNAME>
## @param password - string - optional
## The password to use for the connection.
#
# password: <PASSWORD>
If using Redis 6+ and ACLs, ensure that the user has at least DB Viewer
permissions at the Database level, Cluster Viewer
permissions if operating in a cluster environment, and +config|get +info +slowlog|get
ACL rules. For more details, see Database access control.
Available for Agent versions >6.0
Collecting logs is disabled by default in the Datadog Agent, enable it in your datadog.yaml
file:
logs_enabled: true
Uncomment and edit this configuration block at the bottom of your redisdb.d/conf.yaml
:
logs:
- type: file
path: /var/log/redis_6379.log
source: redis
service: myapplication
Change the path
and service
parameter values and configure them for your environment. See the sample redisdb.yaml for all available configuration options.
Datadog APM integrates with Redis to see the traces across your distributed system. Trace collection is enabled by default in the Datadog Agent v6+. To start collecting traces:
To configure this check for an Agent running on a container:
Set Autodiscovery Integrations Templates as Docker labels on your application container:
LABEL "com.datadoghq.ad.check_names"='["redisdb"]'
LABEL "com.datadoghq.ad.init_configs"='[{}]'
LABEL "com.datadoghq.ad.instances"='[{"host":"%%host%%","port":"6379","password":"%%env_REDIS_PASSWORD%%"}]'
Note: The "%%env_<ENV_VAR>%%"
template variable logic is used to avoid storing the password in plain text, hence the REDIS_PASSWORD
environment variable must be set on the Agent container. See the Autodiscovery Template Variable documentation for more details. Alternatively, the Agent can leverage the secrets
package to work with any secrets management backend (such as HashiCorp Vault or AWS Secrets Manager).
Available for Agent versions >6.0
Collecting logs is disabled by default in the Datadog Agent. To enable it, see Docker Log Collection.
Then, set Log Integrations as Docker labels:
LABEL "com.datadoghq.ad.logs"='[{"source":"redis","service":"<YOUR_APP_NAME>"}]'
APM for containerized apps is supported on Agent v6+ but requires extra configuration to begin collecting traces.
Required environment variables on the Agent container:
Parameter | Value |
---|---|
<DD_API_KEY> | api_key |
<DD_APM_ENABLED> | true |
<DD_APM_NON_LOCAL_TRAFFIC> | true |
See Tracing Docker Applications for a complete list of available environment variables and configuration.
Then, instrument your application container that makes requests to Redis and set DD_AGENT_HOST
to the name of your Agent container.
To configure this check for an Agent running on Kubernetes:
To collect metrics, set the following parameters and values in an Autodiscovery template. You can do this with Kubernetes Annotations (shown below) on your Redis pod(s), or with a local file, ConfigMap, key-value store, Datadog Operator manifest, or Helm chart.
Parameter | Value |
---|---|
<INTEGRATION_NAME> | ["redisdb"] |
<INIT_CONFIG> | [{}] |
<INSTANCE_CONFIG> | [{"host": "%%host%%","port":"6379","password":"%%env_REDIS_PASSWORD%%"}] |
Annotations v1 (for Datadog Agent < v7.36)
apiVersion: v1
kind: Pod
metadata:
name: redis
annotations:
ad.datadoghq.com/redis.check_names: '["redisdb"]'
ad.datadoghq.com/redis.init_configs: '[{}]'
ad.datadoghq.com/redis.instances: |
[
{
"host": "%%host%%",
"port":"6379",
"password":"%%env_REDIS_PASSWORD%%"
}
]
labels:
name: redis
spec:
containers:
- name: redis
image: redis:latest
ports:
- containerPort: 6379
Annotations v2 (for Datadog Agent v7.36+)
apiVersion: v1
kind: Pod
metadata:
name: redis
annotations:
ad.datadoghq.com/redis.checks: |
{
"redisdb": {
"init_config": {},
"instances": [
{
"host": "%%host%%",
"port":"6379",
"password":"%%env_REDIS_PASSWORD%%"
}
]
}
}
labels:
name: redis
spec:
containers:
- name: redis
image: redis:latest
ports:
- containerPort: 6379
Note: The "%%env_<ENV_VAR>%%"
template variable logic is used to avoid storing the password in plain text, hence the REDIS_PASSWORD
environment variable must be set on the Agent container. See the Autodiscovery Template Variable documentation. Alternatively, the Agent can leverage the secrets
package to work with any secrets management backend (such as HashiCorp Vault or AWS Secrets Manager).
Available for Agent versions >6.0
Collecting logs is disabled by default in the Datadog Agent. To enable it, see Kubernetes Log Collection.
Then, set the following parameter in an Autodiscovery template. You can do this with Kubernetes Annotations (shown below) on your Redis pod(s), or with a local file, ConfigMap, key-value store, Datadog Operator manifest, or Helm chart.
Parameter | Value |
---|---|
<LOG_CONFIG> | [{"source":"redis","service":"<YOUR_APP_NAME>"}] |
Annotations v1/v2
apiVersion: v1
kind: Pod
metadata:
name: redis
annotations:
ad.datadoghq.com/redis.logs: '[{"source":"redis","service":"<YOUR_APP_NAME>"}]'
labels:
name: redis
spec:
containers:
- name: redis
image: redis:latest
ports:
- containerPort: 6379
APM for containerized apps is supported on hosts running Agent v6+ but requires extra configuration to begin collecting traces.
Required environment variables on the Agent container:
Parameter | Value |
---|---|
<DD_API_KEY> | api_key |
<DD_APM_ENABLED> | true |
<DD_APM_NON_LOCAL_TRAFFIC> | true |
See Tracing Kubernetes Applications and the Kubernetes Daemon Setup for a complete list of available environment variables and configuration.
Then, instrument your application container that makes requests to Redis.
To configure this check for an Agent running on ECS:
Set Autodiscovery Integrations Templates as Docker labels on your application container:
{
"containerDefinitions": [{
"name": "redis",
"image": "redis:latest",
"dockerLabels": {
"com.datadoghq.ad.check_names": "[\"redisdb\"]",
"com.datadoghq.ad.init_configs": "[{}]",
"com.datadoghq.ad.instances": "[{\"host\":\"%%host%%\",\"port\":\"6379\",\"password\":\"%%env_REDIS_PASSWORD%%\"}]"
}
}]
}
Note: The "%%env_<ENV_VAR>%%"
template variable logic is used to avoid storing the password in plain text, hence the REDIS_PASSWORD
environment variable must be set on the Agent container. See the Autodiscovery Template Variable documentation. Alternatively, the Agent can leverage the secrets
package to work with any secrets management backend (such as HashiCorp Vault or AWS Secrets Manager).
Available for Agent versions >6.0
Collecting logs is disabled by default in the Datadog Agent. To enable it, see ECS Log Collection.
Then, set Log Integrations as Docker labels:
{
"containerDefinitions": [{
"name": "redis",
"image": "redis:latest",
"dockerLabels": {
"com.datadoghq.ad.logs": "[{\"source\":\"redis\",\"service\":\"<YOUR_APP_NAME>\"}]"
}
}]
}
APM for containerized apps is supported on Agent v6+ but requires extra configuration to begin collecting traces.
Required environment variables on the Agent container:
Parameter | Value |
---|---|
<DD_API_KEY> | api_key |
<DD_APM_ENABLED> | true |
<DD_APM_NON_LOCAL_TRAFFIC> | true |
See Tracing Docker Applications for a complete list of available environment variables and configuration.
Then, instrument your application container that makes requests to Redis and set DD_AGENT_HOST
to the EC2 private IP address.
Run the Agent’s status subcommand and look for redisdb
under the Checks section.
redis.active_defrag.hits (gauge) | Number of value reallocations performed by the active defragmentation process. Shown as operation |
redis.active_defrag.key_hits (gauge) | Number of keys that were actively defragmented. Shown as key |
redis.active_defrag.key_misses (gauge) | Number of keys that were skipped by. Shown as key |
redis.active_defrag.misses (gauge) | Number of aborted value reallocations started by the active defragmentation process. Shown as operation |
redis.active_defrag.running (gauge) | Whether active defragmentation is running or not. |
redis.aof.buffer_length (gauge) | Size of the AOF buffer. Shown as byte |
redis.aof.last_rewrite_time (gauge) | Duration of the last AOF rewrite. Shown as second |
redis.aof.loading_eta_seconds (gauge) | The estimated amount of time left to load. Shown as second |
redis.aof.loading_loaded_bytes (gauge) | The amount of bytes to load. Shown as byte |
redis.aof.loading_loaded_perc (gauge) | The percent loaded. Shown as percent |
redis.aof.loading_total_bytes (gauge) | The total amount of bytes already loaded. Shown as byte |
redis.aof.rewrite (gauge) | Flag indicating a AOF rewrite operation is on-going. |
redis.aof.size (gauge) | AOF current file size (aofcurrentsize). Shown as byte |
redis.clients.biggest_input_buf (gauge) | The biggest input buffer among current client connections [v3 & v4]. |
redis.clients.blocked (gauge) | The number of connections waiting on a blocking call. Shown as connection |
redis.clients.longest_output_list (gauge) | The longest output list among current client connections [v3 & v4]. |
redis.clients.recent_max_input_buffer (gauge) | The biggest input buffer among recent client connections [v5+]. |
redis.clients.recent_max_output_buffer (gauge) | The longest output buffer among recent client connections [v5+]. |
redis.command.calls (gauge) | The number of times a redis command has been called, tagged by 'command', e.g. 'command:append'. Enable in Agent's redisdb.yaml with the command_stats option. |
redis.command.usec_per_call (gauge) | The CPU time consumed per redis command call, tagged by 'command', e.g. 'command:append'. Enable in Agent's redisdb.yaml with the command_stats option. |
redis.cpu.sys (gauge) | System CPU consumed by the Redis server. |
redis.cpu.sys_children (gauge) | System CPU consumed by the background processes. |
redis.cpu.sys_main_thread (gauge) | System CPU consumed by the Redis server main thread. [v7+]. |
redis.cpu.user (gauge) | User CPU consumed by the Redis server. |
redis.cpu.user_children (gauge) | User CPU consumed by the background processes. |
redis.cpu.user_main_thread (gauge) | User CPU consumed by the Redis server main thread. [v7+]. |
redis.expires (gauge) | The number of keys with an expiration. Shown as key |
redis.expires.percent (gauge) | Percentage of total keys with an expiration. Shown as percent |
redis.info.latency_ms (gauge) | The latency of the redis INFO command. Shown as millisecond |
redis.key.length (gauge) | The number of elements in a given key, tagged by key, e.g. 'key:mykeyname'. Enable in Agent's redisdb.yaml with the keys option. |
redis.keys (gauge) | The total number of keys. Shown as key |
redis.keys.evicted (gauge) | The total number of keys evicted due to the maxmemory limit. Shown as key |
redis.keys.expired (gauge) | The total number of keys expired from the db. Shown as key |
redis.mem.fragmentation_ratio (gauge) | Ratio between usedmemoryrss and used_memory. Shown as fraction |
redis.mem.lua (gauge) | Amount of memory used by the Lua engine. Shown as byte |
redis.mem.maxmemory (gauge) | Maximum amount of memory allocated to the Redisdb system. Shown as byte |
redis.mem.overhead (gauge) | Sum of all overheads allocated by Redis for managing its internal datastructures [v4+]. Shown as byte |
redis.mem.peak (gauge) | The peak amount of memory used by Redis. Shown as byte |
redis.mem.rss (gauge) | Amount of memory that Redis allocated as seen by the os. Shown as byte |
redis.mem.startup (gauge) | Amount of memory consumed by Redis at startup. Shown as byte |
redis.mem.used (gauge) | Amount of memory allocated by Redis. Shown as byte |
redis.net.clients (gauge) | The number of connected clients (excluding slaves). Shown as connection |
redis.net.commands (gauge) | The number of commands processed by the server. Shown as command |
redis.net.commands.instantaneous_ops_per_sec (gauge) | The number of commands processed by the server per second. Shown as command |
redis.net.connections (gauge) | The number of connections tagged by client name. Shown as connection |
redis.net.instantaneous_input (gauge) | The network's read rate per second in KB/sec. Shown as kibibyte |
redis.net.instantaneous_ops_per_sec (gauge) | Number of commands processed per second. Shown as operation |
redis.net.instantaneous_output (gauge) | The network's write rate per second in KB/sec. Shown as kibibyte |
redis.net.maxclients (gauge) | The maximum number of connected clients. Shown as connection |
redis.net.rejected (gauge) | The number of rejected connections. Shown as connection |
redis.net.slaves (gauge) | The number of connected slaves. Shown as connection |
redis.net.total_connections_received (gauge) | Total number of connections accepted by the server. Shown as connection |
redis.perf.latest_fork_usec (gauge) | The duration of the latest fork. Shown as microsecond |
redis.persist (gauge) | The number of keys persisted (redis.keys - redis.expires). Shown as key |
redis.persist.percent (gauge) | Percentage of total keys that are persisted. Shown as percent |
redis.ping.latency_ms (gauge) | The latency of the redis PING command. Shown as millisecond |
redis.pubsub.channels (gauge) | The number of active pubsub channels. |
redis.pubsub.patterns (gauge) | The number of active pubsub patterns. |
redis.rdb.bgsave (gauge) | One if a bgsave is in progress and zero otherwise. |
redis.rdb.changes_since_last (gauge) | The number of changes since the last background save. |
redis.rdb.last_bgsave_time (gauge) | Duration of the last bg_save operation. Shown as second |
redis.replication.backlog_histlen (gauge) | The amount of data in the backlog sync buffer. Shown as byte |
redis.replication.delay (gauge) | The replication delay in offsets. Shown as offset |
redis.replication.last_io_seconds_ago (gauge) | Amount of time since the last interaction with master. Shown as second |
redis.replication.master_link_down_since_seconds (gauge) | Amount of time that the master link has been down. Shown as second |
redis.replication.master_repl_offset (gauge) | The replication offset reported by the master. Shown as offset |
redis.replication.slave_repl_offset (gauge) | The replication offset reported by the slave. Shown as offset |
redis.replication.sync (gauge) | One if a sync is in progress and zero otherwise. |
redis.replication.sync_left_bytes (gauge) | Amount of data left before syncing is complete. Shown as byte |
redis.server.io_threads_active (gauge) | Flag indicating if I/O threads are active. This metric is only provided by redis >=6.x. |
redis.slowlog.micros.95percentile (gauge) | The 95th percentile of the duration of queries reported in the slow log. Shown as microsecond |
redis.slowlog.micros.avg (gauge) | The average duration of queries reported in the slow log. Shown as microsecond |
redis.slowlog.micros.count (rate) | The rate of queries reported in the slow log. Shown as query |
redis.slowlog.micros.max (gauge) | The maximum duration of queries reported in the slow log. Shown as microsecond |
redis.slowlog.micros.median (gauge) | The median duration of queries reported in the slow log. Shown as microsecond |
redis.stats.io_threaded_reads_processed (gauge) | Number of read events processed by the main and I/O threads. This metric is only provided by redis >=6.x. |
redis.stats.io_threaded_writes_processed (gauge) | Number of write events processed by the main and I/O threads. This metric is only provided by redis >=6.x. |
redis.stats.keyspace_hits (gauge) | The rate of successful lookups in the main db. Shown as key |
redis.stats.keyspace_misses (gauge) | The rate of missed lookups in the main db. Shown as key |
The Redis check does not include any events.
redis.can_connect
Returns CRITICAL
if the Agent check is unable to connect to the monitored redis instance. Returns OK
otherwise.
Statuses: ok, critical
redis.replication.master_link_status
Returns CRITICAL
if this Redis instance is unable to connect to its master instance. Returns OK
otherwise.
Statuses: ok, critical
redisdb
-------
- instance #0 [ERROR]: 'Error 111 connecting to localhost:6379. Connection refused.'
- Collected 0 metrics, 0 events & 1 service check
Check that the connection info in redisdb.yaml
is correct.
redisdb
-------
- instance #0 [ERROR]: 'NOAUTH Authentication required.'
- Collected 0 metrics, 0 events & 1 service check
Configure a password
in redisdb.yaml
.
Additional helpful documentation, links, and articles: