使用Kubernetes的多个hostPath volumeMounts :只有一个有效

Question

我的pod规范文件

  - name: temp1-cont
    image: temp1-img:v2
    env:
      - name: CONFIG_MODE
        value: "manager"
    securityContext:
      privileged: true
    volumeMounts:
      - mountPath: /bin/tipc-config
        name: tipc-vol
    volumeMounts:
      - mountPath: /etc/
        name: config-vol
    resources:
      limits:
        cpu: 100m
        memory: "100Mi"
      requests:
        cpu: 100m
        memory: "100Mi"
    command: ["/etc/init.d/docker-init"]
  volumes:
    - name: tipc-vol
      hostPath:
        path: /opt/tipc-config
        type: FileOrCreate
    - name: config-vol
      hostPath:
        path: /opt/config/
        type: DirectoryOrCreate

我使用两个hostPath卷，即tipc-vol和config-vol，但是当我创建pod时，只挂载了一个卷，顺便说一下，这是容器上挂载的最后一个卷

  temp1-cont:
    Container ID:
    Image:         temp1-img:v2
    Image ID:
    Port:          <none>
    Host Port:     <none>
    Command:
      /etc/init.d/docker-init
    State:          Running
      Started:      Tue, 09 Jun 2020 09:36:57 +0000
    Ready:          False
    Restart Count:  0
    Limits:
      cpu:     100m
      memory:  100Mi
    Requests:
      cpu:     100m
      memory:  100Mi
    Environment:
      CONFIG_MODE:  manager
    Mounts:
      /etc/ from config-vol (rw)
      /var/run/secrets/kubernetes.io/serviceaccount from default-token-g2ltz (ro)
Conditions:
  Type              Status
  Initialized       True
  Ready             False
  ContainersReady   False
  PodScheduled      True
Volumes:
  tipc-vol:
    Type:          HostPath (bare host directory volume)
    Path:          /opt/tipc-config
    HostPathType:  FileOrCreate
  config-vol:
    Type:          HostPath (bare host directory volume)
    Path:          /opt/config/
    HostPathType:  DirectoryOrCreate
  default-token-g2ltz:
    Type:        Secret (a volume populated by a Secret)
    SecretName:  default-token-g2ltz
    Optional:    false
QoS Class:       Guaranteed

在k8s文档中，没有提到这样的内容。我正在尝试测试我的应用程序，所以我使用的是hostVolume而不是持久卷。任何帮助都将不胜感激。提前谢谢。

Answer 1

如下所示更新pod卷挂载

      volumeMounts:
      - mountPath: /bin/tipc-config
        name: tipc-vol
      - mountPath: /etc/
        name: config-vol

所以，你的pod yaml将会是

 - name: temp1-cont
    image: temp1-img:v2
    env:
      - name: CONFIG_MODE
        value: "manager"
    securityContext:
      privileged: true
    volumeMounts:
      - mountPath: /bin/tipc-config
        name: tipc-vol
      - mountPath: /etc/
        name: config-vol
    resources:
      limits:
        cpu: 100m
        memory: "100Mi"
      requests:
        cpu: 100m
        memory: "100Mi"
    command: ["/etc/init.d/docker-init"]
  volumes:
    - name: tipc-vol
      hostPath:
        path: /opt/tipc-config
        type: FileOrCreate
    - name: config-vol
      hostPath:
        path: /opt/config/
        type: DirectoryOrCreate

Answer 2

卸下第二个volumeMounts:。所以下面应该是可行的

volumeMounts:
  - mountPath: /bin/tipc-config
    name: tipc-vol
  - mountPath: /etc/
    name: config-vol