pod健康检测 exec/http/tcpSocket

pod健康检测 方法：
exec
http
tcpSocket


1） liveness-exec.yaml

---
apiVersion: v1
kind: Pod
metadata:
  name: liveness-exec
  labels:
    app: liveness
spec:
  containers:
  - name: liveness
    image: busybox
    args:
    - /bin/sh
    - -c
    - touch /tmp/healthy;sleep 30; rm -rf /tmp/healthy; sleep 600
    livenessProbe:
      exec:
        command:
        - cat
        - /tmp/healthy
      initialDelaySeconds: 5
      periodSeconds: 5



2）liveness-http.yaml

---
apiVersion: v1
kind: Pod
metadata:
  name: liveness-http
  labels:
    app: liveness
spec:
  containers:
  - name: liveness
    image: cnych/liveness
    args:
    - /server
    livenessProbe:
      httpGet:
        path: /healthz
        port: 8080
      initialDelaySeconds: 3
      periodSeconds: 3

3)tcpSocket方式检测

---
apiVersion: v1
kind: Pod
metadata:
  name: liveness-readiness
  labels:
    app: liveness-readiness
spec:
  containers:
  - name: liveness-readiness
    image: cnych/liveness
    args:
    - /server
    livenessProbe:
      tcpSocket:
        port: 8080
      initialDelaySeconds: 5
      periodSeconds: 5
    readinessProbe:
      tcpSocket:
        port:8080
      initialDelaySeconds: 3
      perioidSeconds: 3