postgresql - kubernetes : saving users and settings in a volume 上的 Pgadmin4

Question

我想将用户帐户和其他设置保存在 pgadmin4 k8s 实例的卷中，我这样做了:

    apiVersion: apps/v1
    kind: Deployment
    metadata:
      name: pgadmin
      namespace: pgadmin
    spec:
      selector:
       matchLabels:
        app: pgadmin
      replicas: 1
      template:
        metadata:
          labels:
            app: pgadmin
        spec:
          containers:
            - name: pgadmin4
              image: dpage/pgadmin4
              env:
               - name: PGADMIN_DEFAULT_EMAIL
                 value: "admin@example.com"
               - name: PGADMIN_DEFAULT_PASSWORD
                 value: "mysecpwd"
               - name: PGADMIN_PORT
                 value: "80"
              ports:
                - containerPort: 80
                  name: pgadminport
              volumeMounts:
                - mountPath: /
                  name: pgadmin-storage

          volumes:
               - name: pgadmin-storage
                 persistentVolumeClaim:
                   claimName: pgadmin-pv-claim
    ---
        kind: PersistentVolume
        apiVersion: v1
        metadata:
          name: pgadmin-pv-volume
          namespace: pgadmin
          labels:
            type: local
            app: pgadmin
        spec:
          storageClassName: manual
          capacity:
            storage: 5Gi
          accessModes:
            - ReadWriteMany
          hostPath:
            path: "/mnt/data"
    ---
        kind: PersistentVolumeClaim
        apiVersion: v1
        metadata:
          name: pgadmin-pv-claim
          namespace: pgadmin
          labels:
            app: pgadmin
        spec:
          storageClassName: manual
          accessModes:
            - ReadWriteMany
          resources:
            requests:
              storage: 5Gi

问题是当我重新启动 pod 时，即使 pv 绑定(bind)到 pod，创建的用户也会消失，我不确定这部分:

              volumeMounts:
                - mountPath: /
                  name: pgadmin-storage

我想我必须指定保存用户信息和设置的目录，我尝试了默认目录 /pgadmin4 但 pod 崩溃了。

Answer 1

根据@Wytrzymały的回答，我检查了用helm创建的deployment，发现正确的mountPath是/var/lib/pgadmin，section应该是像这样:

      ...
      volumeMounts:
        - mountPath: /var/lib/pgadmin
          name: pgadmin-storage
      ...

另一件事是我必须更改该目录的所有者以便应用程序可以写入它，为此我使用了 InitContainers (pgadmin uid = 5050):

...
spec:
  initContainers:
    - name: volume-mount-hack
    image: busybox
    command: ["sh", "-c", "chown -R 5050:5050 /var/lib/pgadmin"]
    volumeMounts:
      - name: pgadmin-storage
        mountPath: /var/lib/pgadmin
....

希望对大家有帮助