Kubernetes Scheduler

Supported OS Linux Windows Mac OS

통합 버전6.0.0
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Kube Scheduler dashboard

Overview

This check monitors Kubernetes Scheduler, part of the Kubernetes control plane.

Note: This check does not collect data for Amazon EKS clusters, as those services are not exposed.

Setup

Installation

The Kubernetes Scheduler check is included in the Datadog Agent package. No additional installation is needed on your server.

Configuration

See the Autodiscovery Integration Templates for guidance on applying the parameters below.

Metric collection

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

  2. Restart the Agent.

Log collection

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

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

Validation

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

Data Collected

Metrics

kube_scheduler.binding_duration.count
(gauge)
Number of latency in seconds
kube_scheduler.binding_duration.sum
(gauge)
Total binding latency in seconds
kube_scheduler.cache.lookups
(count)
Number of equivalence cache lookups, by whether or not a cache entry was found
kube_scheduler.client.http.requests
(count)
Number of HTTP requests, partitioned by status code, method, and host
kube_scheduler.client.http.requests_duration.count
(gauge)
Number of client requests. Broken down by verb and URL
kube_scheduler.client.http.requests_duration.sum
(gauge)
Total latency. Broken down by verb and URL
kube_scheduler.gc_duration_seconds.count
(gauge)
Number of the GC invocation
kube_scheduler.gc_duration_seconds.quantile
(gauge)
GC invocation durations quantiles
kube_scheduler.gc_duration_seconds.sum
(gauge)
GC invocation durations sum
kube_scheduler.goroutine_by_scheduling_operation
(gauge)
Number of running goroutines split by the work they do such as binding (alpha; requires k8s v1.26+)
kube_scheduler.goroutines
(gauge)
Number of goroutines that currently exist
kube_scheduler.max_fds
(gauge)
Maximum allowed open file descriptors
kube_scheduler.open_fds
(gauge)
Number of open file descriptors
kube_scheduler.pending_pods
(gauge)
Number of pending pods, by the queue type (requires k8s v1.15+)
kube_scheduler.pod_preemption.attempts
(count)
Number of preemption attempts in the cluster till now
kube_scheduler.pod_preemption.victims.count
(gauge)
Number of selected pods during the latest preemption round
kube_scheduler.pod_preemption.victims.sum
(gauge)
Total selected pods during the latest preemption round
kube_scheduler.queue.incoming_pods
(count)
Number of pods added to scheduling queues by event and queue type (requires k8s v1.17+)
kube_scheduler.schedule_attempts
(gauge)
Number of attempts to schedule pods, by the result. 'unschedulable' means a pod could not be scheduled, while 'error' means an internal scheduler problem.
kube_scheduler.scheduling.algorithm.predicate_duration.count
(gauge)
Number of scheduling algorithm predicate evaluation
kube_scheduler.scheduling.algorithm.predicate_duration.sum
(gauge)
Total scheduling algorithm predicate evaluation duration
kube_scheduler.scheduling.algorithm.preemption_duration.count
(gauge)
Number of scheduling algorithm preemption evaluation
kube_scheduler.scheduling.algorithm.preemption_duration.sum
(gauge)
Total scheduling algorithm preemption evaluation duration
kube_scheduler.scheduling.algorithm.priority_duration.count
(gauge)
Number of scheduling algorithm priority evaluation
kube_scheduler.scheduling.algorithm.priority_duration.sum
(gauge)
Total scheduling algorithm priority evaluation duration
kube_scheduler.scheduling.algorithm_duration.count
(gauge)
Number of scheduling algorithm latency
kube_scheduler.scheduling.algorithm_duration.sum
(gauge)
Total scheduling algorithm latency
kube_scheduler.scheduling.attempt_duration.count
(gauge)
Scheduling attempt latency in seconds (scheduling algorithm + binding) (requires k8s v1.23+)
kube_scheduler.scheduling.attempt_duration.sum
(gauge)
Total scheduling attempt latency in seconds (scheduling algorithm + binding) (requires k8s v1.23+)
kube_scheduler.scheduling.e2e_scheduling_duration.count
(gauge)
Number of E2e scheduling latency (scheduling algorithm + binding)
kube_scheduler.scheduling.e2e_scheduling_duration.sum
(gauge)
Total E2e scheduling latency (scheduling algorithm + binding)
kube_scheduler.scheduling.pod.scheduling_attempts.count
(gauge)
Number of attempts to successfully schedule a pod (requires k8s v1.23+)
kube_scheduler.scheduling.pod.scheduling_attempts.sum
(gauge)
Total number of attempts to successfully schedule a pod (requires k8s v1.23+)
kube_scheduler.scheduling.pod.scheduling_duration.count
(gauge)
E2e latency for a pod being scheduled which may include multiple scheduling attempts (requires k8s v1.23+)
kube_scheduler.scheduling.pod.scheduling_duration.sum
(gauge)
Total e2e latency for a pod being scheduled which may include multiple scheduling attempts (requires k8s v1.23+)
kube_scheduler.scheduling.scheduling_duration.count
(gauge)
Number of scheduling split by sub-parts of the scheduling operation
kube_scheduler.scheduling.scheduling_duration.quantile
(gauge)
Scheduling latency quantiles split by sub-parts of the scheduling operation
kube_scheduler.scheduling.scheduling_duration.sum
(gauge)
Total scheduling latency split by sub-parts of the scheduling operation
kube_scheduler.slis.kubernetes_healthcheck
(gauge)
Result of a single scheduler healthcheck (alpha; requires k8s v1.26+)
kube_scheduler.slis.kubernetes_healthcheck_total
(count)
Cumulative results of all scheduler healthchecks (alpha; requires k8s v1.26+)
kube_scheduler.threads
(gauge)
Number of OS threads created
kube_scheduler.volume_scheduling_duration.count
(gauge)
Number of Volume scheduling
kube_scheduler.volume_scheduling_duration.sum
(gauge)
Total Volume scheduling stage latency

Events

Kube Scheduler does not include any events.

Service Checks

kube_scheduler.prometheus.health
Returns CRITICAL if the check cannot access the metrics endpoint.
Statuses: ok, critical

kube_scheduler.leader_election.status
Returns CRITICAL if no replica is currently set as leader.
Statuses: ok, critical

kube_scheduler.up
Returns CRITICAL if Kube Scheduler is not healthy.
Statuses: ok, critical

Troubleshooting

Need help? Contact Datadog support.