k8s pod完整生命周期

 

[root@master01 pod_init]# cat pod-all-life-cycles.yaml

apiVersion: v1
kind: Pod
metadata:
  name: init-pod-1
  namespace: default
  labels:
    app: ini-pod
    dev: pro
spec:
  initContainers:
  - name: init-1
    image: nginx:1.16.0
    imagePullPolicy: IfNotPresent
    command: ["/bin/sh"]
    args: ["-c", "echo hello-1; sleep 3"]
  - name: init-2
    image: nginx:1.16.0
    imagePullPolicy: IfNotPresent
    command: ["/bin/sh"]
    args: ["-c", "echo hello-2; sleep 5"]
  containers:
  - name: init-pod-01
    image: nginx:1.16.0
    imagePullPolicy: IfNotPresent
    ports:
    - name: tcp80
      containerPort: 80
    - name: tcp443
      containerPort: 443
    lifecycle:
      postStart:
        exec:
          command: ["/bin/sh", "-c", "echo Hello from the postStart handler > /usr/share/message"]
      preStop:
        exec:
          command: ["/bin/sh","-c","nginx -s quit; while killall -0 nginx; do sleep 1; done"]
    startupProbe:
      httpGet:
        path: /
        port: 80
      initialDelaySeconds: 5
      periodSeconds: 5
      successThreshold: 1
      failureThreshold: 3
      timeoutSeconds: 5
    readinessProbe:
      exec:
        command: ["/bin/sh","-c","sleep 2"]
      initialDelaySeconds: 4
      periodSeconds: 4
      successThreshold: 1
      failureThreshold: 4
      timeoutSeconds: 4
    livenessProbe:
      tcpSocket:
        port: 80
      initialDelaySeconds: 3
      periodSeconds: 3
      successThreshold: 1
      failureThreshold: 3
      timeoutSeconds: 3

pod 基础操作

#1
# 启动pod  apply yaml 
[root@master01 pod_init]# kubectl apply -f pod-all-life-cycles.yaml

# 停止pod  apply yaml 
[root@master01 pod_init]# kubectl  delete -f pod-all-life-cycles.yaml --force --grace-period=0

# 强制删除 pod     参数 --force --grace-period=0

[root@master01 pod_init]# kubectl  delete pods init-pod-1 --force --grace-period=0

  # 查看pod 详细信息
[root@master01 pod_init]# kubectl describe pod init-pod-1

# 实时监控pop创建过程信息
[root@master01 pod_init]# kubectl get pod -o wide -w