Kubernetes：initContainer與gce-proxy？

我需要在運行我們的應用程序之前更新我的數據庫模式。對於基於this thread和this answer的我已經決定使用init容器來完成這項工作。Kubernetes：initContainer與gce-proxy？

由於我的SQL實例是託管的Google Cloud SQL實例，因此我需要gce-proxy才能連接到數據庫。我initContainers看起來是這樣的：

initContainers: 
    - name: cloudsql-proxy-init 
     image: gcr.io/cloudsql-docker/gce-proxy:1.09 
     command: ["/cloud_sql_proxy"] 
     args: 
     - --dir=/cloudsql 
     - -instances=xxxx:europe-west1:yyyyy=tcp:5432 
     - -credential_file=/secrets/cloudsql/credentials.json 
     volumeMounts: 
     - name: dev-db-instance-credentials 
      mountPath: /secrets/cloudsql 
      readOnly: true 
     - name: ssl-certs 
      mountPath: /etc/ssl/certs 
     - name: cloudsql 
      mountPath: /cloudsql 
    - name: liquibase 
     image: eu.gcr.io/xxxxx/liquibase:v1 
     imagePullPolicy: Always 
     command: ["./liquibase.sh"] 
     env: 
     - name: DB_TYPE 
      value: postgresql 
     - name: DB_URL 
      value: jdbc:postgresql://localhost/test 
     - name: DB_PASSWORD 
      valueFrom: 
      secretKeyRef: 
       name: db-credentials 
       key: password 
     - name: DB_USER 
      valueFrom: 
      secretKeyRef: 
       name: db-credentials 
       key: username

但我的匣被卡住：

containers with incomplete status: [cloudsql-proxy-init liquibase]

如果我看莢描述：

Init Containers: 
    cloudsql-proxy-init: 
    Container ID: docker://0373fa6528ec3768d46a1c59ca45f12d9fc46d1f0d199b7eb3772545701e1b1d 
    Image:  gcr.io/cloudsql-docker/gce-proxy:1.09 
    Image ID:  docker://sha256:66c58ef63dbfe239ff95416d62635559498ebb395abb8a4b1edee78e48e05fe4 
    Port: 
    Command: 
     /cloud_sql_proxy 
    Args: 
     --dir=/cloudsql 
     -instances=xxxxx:europe-west1:yyyyyy=tcp:5432 
     -credential_file=/secrets/cloudsql/credentials.json 
    State:  Running 
     Started:  Thu, 13 Apr 2017 17:40:02 +0300 
    Ready:  False 
    Restart Count: 0 
    Mounts: 
     /cloudsql from cloudsql (rw) 
     /etc/ssl/certs from ssl-certs (rw) 
     /secrets/cloudsql from dev-db-instance-credentials (ro) 
     /var/run/secrets/kubernetes.io/serviceaccount from default-token-th58c (ro) 
liquibase: 
    Container ID: 
    Image:  eu.gcr.io/xxxxxx/liquibase:v1 
    Image ID: 
    Port: 
    Command: 
     ./liquibase.sh 
    State:  Waiting 
     Reason:  PodInitializing 
    Ready:  False 
    Restart Count: 0 
    Environment: 
     DB_TYPE:  postgresql 
     DB_URL:  jdbc:postgresql://localhost/test 
     DB_PASSWORD: <set to the key 'password' in secret 'db-credentials'> Optional: false 
     DB_USER:  <set to the key 'username' in secret 'db-credentials'> Optional: false 
    Mounts: 
     /var/run/secrets/kubernetes.io/serviceaccount from default-token-th58c (ro)

它似乎雲SQL- proxy-init正在運行：

2017/04/13 14:40:02 using credential file for authentication; [email protected] 
2017/04/13 14:40:02 Listening on 127.0.0.1:5432 for xxxxx:europe-west1:yyyyy 
2017/04/13 14:40:02 Ready for new connections

這可能是問題所在，因爲init容器應該退出以便初始化可以繼續？那麼我怎樣才能從liquibase連接到Google Cloud SQL實例？

來源

2017-04-13 gerasalus