File contains code snippet for liveness probe in kubernetes.

liveness-probe-exec.yaml

apiVersion: v1
kind: Pod
metadata:
  labels:
    app: liveness
  name: liveness-pod
spec:
  containers:
  - name: liveness
    image: nginx
    ports:
    - containerPort: 8080
    livenessProbe:
      exec:
        command:
        - cat
        - /usr/share/nginx/html/index.html
      initialDelaySeconds: 30
      periodSeconds: 10
      timeoutSeconds: 4
      successThreshold: 1
      failureThreshold: 3

liveness-probe-grpc.yaml

apiVersion: v1
kind: Pod
metadata:
  name: ectd-server-grpc
spec:
  containers:
  - name: ectd
    image: registry.k8s.io/etcd:3.5.1-0
    command: [ "/usr/local/bin/etcd", "--data-dir",  "/var/lib/etcd", "--listen-client-urls", "http://0.0.0.0:2379", "--advertise-client-urls", "http://127.0.0.1:2379", "--log-level", "debug"]
    ports:
    - containerPort: 2379
    livenessProbe:
      grpc:
        port: 2379
      initialDelaySeconds: 30
      periodSeconds: 20
      timeoutSeconds: 4
      successThreshold: 1
      failureThreshold: 3

liveness-probe-httpget.yaml

apiVersion: v1
kind: Pod
metadata:
  labels:
    app: liveness
  name: liveness-pod
spec:
  containers:
  - name: liveness
    image: nginx
    ports:
    - containerPort: 8080
    livenessProbe:
      httpGet:
        path: /
        port: 80
      initialDelaySeconds: 30
      periodSeconds: 10
      timeoutSeconds: 4
      successThreshold: 1
      failureThreshold: 3

liveness-probe-tcp.yaml

apiVersion: v1
kind: Pod
metadata:
  name: redis-server
spec:
  containers:
  - name: redis
    image: redis:latest
    ports:
    - containerPort: 6379
    livenessProbe:
      tcpSocket:
        port: 6379
      initialDelaySeconds: 30
      periodSeconds: 20
      timeoutSeconds: 4
      successThreshold: 1
      failureThreshold: 3