Kubernetes(K8S) 镜像拉取策略 imagePullPolicy

镜像仓库，镜像已更新，版本没更新，
K8S 拉取后，还是早的服务，原因：imagePullPolicy 镜像拉取策略 默认为本地有了就不拉取，需要修改

[root@k8smaster ~]# kubectl edit deployment/javademo1
.....
 spec:
      containers:
      - image: registry.cn-shanghai.aliyuncs.com/vipsoft/vipsoft:4.3
        imagePullPolicy: IfNotPresent
        name: vipsoft
        resources: {}
        terminationMessagePath: /dev/termination-log
        terminationMessagePolicy: File
.....

imagePullPolicy: IfNotPresent
Always ：总是拉取 pull
IfNotPresent: 默认值,本地有则使用本地镜像,不拉取
Never：只使用本地镜像，从不拉取