Kubernetes probes
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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]
See also[edit]
- K8s probes:
readinessProbe, livenessProbe, StartupProbe, exec, gRPC, HttpGet, tcpSocket, TerminationGracePeriodSeconds
- Kubernetes deployments, strategies:
kind: Deployment
, Strategies:Recreate
orRollingUpdate
,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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