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  • 【k8s】Pod-containers

    环境

    1. kubernetes 1.20.4
    2. Spring Boot 2.5.0-M3

    目标

    在 Pod 配置容器的时候,containers 字段是一个数组,也就是说,可以在一个 Pod 中配置多个容器。

    示例

    Pod.yaml

    apiVersion: v1
    kind: Pod
    metadata:
      name: spring-k8s
    spec:
      containers:
        - name: spring-k8s
          image: jiangbo920827/spring-k8s:liveness
          ports:
            - containerPort: 8080
        - name: busybox
          image: busybox:stable
          command: ["/bin/sh", "-c", "sleep 3600"]
    

    查看

    [root@master ~]# kubectl get pod -o wide
    NAME         READY   STATUS    RESTARTS   AGE   IP             NODE    NOMINATED NODE   READINESS GATES
    spring-k8s   2/2     Running   0          9s    10.244.2.191   node2   <none>           <none>
    

    查看容器信息

    [root@master ~]# kubectl get pod spring-k8s -o json | jq .spec.containers
    [
      {
        "image": "jiangbo920827/spring-k8s:liveness",
        "imagePullPolicy": "IfNotPresent",
        "name": "spring-k8s",
        "ports": [
          {
            "containerPort": 8080,
            "protocol": "TCP"
          }
        ],
        "resources": {},
        "terminationMessagePath": "/dev/termination-log",
        "terminationMessagePolicy": "File",
        "volumeMounts": [
          {
            "mountPath": "/var/run/secrets/kubernetes.io/serviceaccount",
            "name": "default-token-slbq5",
            "readOnly": true
          }
        ]
      },
      {
        "command": [
          "/bin/sh",
          "-c",
          "sleep 3600"
        ],
        "image": "busybox:stable",
        "imagePullPolicy": "IfNotPresent",
        "name": "busybox",
        "resources": {},
        "terminationMessagePath": "/dev/termination-log",
        "terminationMessagePolicy": "File",
        "volumeMounts": [
          {
            "mountPath": "/var/run/secrets/kubernetes.io/serviceaccount",
            "name": "default-token-slbq5",
            "readOnly": true
          }
        ]
      }
    ]
    [root@master ~]#
    

    总结

    Pod 中,可以定义多个容器,每个容器可以有自己的功能。

    附录

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  • 原文地址:https://www.cnblogs.com/jiangbo44/p/14590282.html
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