Difference between revisions of "Kubernetes probes"
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| + | https://kubernetes.io/docs/tasks/configure-pod-container/configure-liveness-readiness-startup-probes/ | ||
| − | |||
| − | |||
| − | |||
| − | + | [[probes:]] | |
| − | + | * <code>[[readinessProbe]]</code> | |
| + | * <code>[[livenessProbe]]</code> | ||
| + | * <code>[[startupProbe]]</code> | ||
| + | |||
| + | Options: | ||
| + | * [[terminationGracePeriodSeconds]] | ||
| + | |||
| + | Check mechanisms: | ||
| + | * <code>[[exec:|exec]]</code> | ||
| + | * <code>[[grpc]]</code> | ||
| + | * <code>[[httpGet]]: [[httpHeaders]]</code> | ||
| + | * <code>[[tcpSocket]]</code> | ||
[[kind: Deployment]] | [[kind: Deployment]] | ||
| + | |||
| + | {{liveness-exec}} | ||
| + | |||
| + | |||
| Line 16: | Line 29: | ||
* <code>[[customStartupProbe]]</code> | * <code>[[customStartupProbe]]</code> | ||
* <code>[[customLivenessProbe]]</code> | * <code>[[customLivenessProbe]]</code> | ||
| − | * <code>[[customReadinessProbe]] | + | * <code>[[customReadinessProbe]]</code> |
| + | * [[Kubernetes restartPolicy]] | ||
| + | * [[CrashLoopBackOff]] | ||
| + | * [[Unknown]] | ||
== See also == | == See also == | ||
* {{K8s probes}} | * {{K8s probes}} | ||
* {{K8s deployments}} | * {{K8s deployments}} | ||
| + | * {{K8s troubleshooting}} | ||
[[Category:K8s]] | [[Category:K8s]] | ||
Latest revision as of 08:23, 7 November 2024
Options:
Check mechanisms:
kind: Deployment
apiVersion: v1
kind: Pod
metadata:
labels:
test: liveness
name: liveness-exec
spec:
containers:
- name: liveness
image: registry.k8s.io/busybox
args:
- /bin/sh
- -c
- touch /tmp/healthy; sleep 30; rm -f /tmp/healthy; sleep 600
livenessProbe:
exec:
command:
- cat
- /tmp/healthy
initialDelaySeconds: 5
periodSeconds: 5
readinessProbe: httpGet: path: /api/health port: 3000 livenessProbe: httpGet: path: /api/health port: 3000 initialDelaySeconds: 60 timeoutSeconds: 30 failureThreshold: 10
Related[edit]
Redis values.ymlcustomStartupProbecustomLivenessProbecustomReadinessProbe- Kubernetes restartPolicy
- CrashLoopBackOff
- Unknown
See also[edit]
- K8s probes:
readinessProbe, livenessProbe, StartupProbe, exec, gRPC, HttpGet, tcpSocket, TerminationGracePeriodSeconds - Kubernetes deployments, strategies:
kind: Deployment, Strategies:RecreateorRollingUpdate,kubectl[create | describe | get | scale | rollout | deployment/], Kubernetes Canary Deployments,deployment.kubernetes.io - K8s troubleshooting:
kubectl logs, kubectl top, kubectl get events -A, kubectl describe pod, Liveness, Readiness,Kubernetes events, Pulling image, OOMKilled, ProbeWarning, Reason,FailedScheduling,errImagePull, ImagePullBackOff, Kubelet conditions:MemoryPressure, DiskPressure, KubeletHasSufficientPID, KubeletReady, kubectl [ debug | attach | exec ] kubectl cluster-info dump, SimKube, KWOK
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