init container与应用容器在本质上是一样的, 但它们是仅运行一次就结束的任务, 并且必须在成功执行完成后, 系统才能继续执行下一个容器， 可以用在例如应用容器启动前做一些初始化工作，当init container执行失败, 而且设置了RestartPolicy=Never时, Pod将会启动失败, 而设置了RestartPolicy=Always时, pod将会被系统自动重启
apiVersion: apps/v1 kind: Deployment metadata: name: nginx-deployment namespace: default labels: app: nginx spec: selector: matchLabels: app: nginx replicas: 1 template: metadata: labels: app: nginx spec: initContainers: - name: install image: busybox imagePullPolicy: IfNotPresent command: - wget - "-O" - "/work-dir/index.html" - http://kubernetes.io volumeMounts: - name: workdir mountPath: "/work-dir" containers: - name: nginx image: nginx:1.12 imagePullPolicy: IfNotPresent ports: - containerPort: 80 volumeMounts: - name: workdir mountPath: "/usr/share/nginx/html" volumes: - name: workdir emptyDir: {} --- apiVersion: v1 kind: Service metadata: name: nginx-service namespace: default labels: app: nginx spec: type: NodePort selector: app: nginx ports: - name: http port: 80 protocol: TCP targetPort: 80 ---转载于:https://www.cnblogs.com/lovelinux199075/p/11243817.html
