配置pod生命周期

apiVersion: v1
kind: Pod
metadata:
  name: lifecycle-demo
  namespace: default
spec:
  containers:
  - name: nginx-container
    image: nginx:latest
    lifecycle:
      postStart:
        exec:
          command:
          - sh
          - -c
          - echo "Hello from the postStart handler" > /usr/share/message
      preStop:
        exec:
          command:
          - sh
          - -c
          - nginx -s quit; while killall -0 nginx; do sleep 1; done