zhoulii commented on pull request #3859:
URL: https://github.com/apache/zeppelin/pull/3859#issuecomment-674753722


   there is another problem,  when starting interpreter-server, 
[K8sRemoteInterpreterProcess#L283](https://github.com/apache/zeppelin/blob/master/zeppelin-plugins/launcher/k8s-standard/src/main/java/org/apache/zeppelin/interpreter/launcher/K8sRemoteInterpreterProcess.java#L283)
 would set `ZEPPELIN_HOME` in `interpreter pod` to `/zeppelin`, but the real 
`ZEPPELIN_HOME` in `interpreter pod` is `/opt/zeppelin`.
   
   I think of two ways to slove this issue:
   **solution 1:**  simply hard code `ZEPPELIN_HOME` to `/opt/zeppelin` in 
[Line 
283](https://github.com/apache/zeppelin/blob/master/zeppelin-plugins/launcher/k8s-standard/src/main/java/org/apache/zeppelin/interpreter/launcher/K8sRemoteInterpreterProcess.java#L283)
   
   **solution 2:** read `ZEPPELIN_HOME` from env variables. 
   - first, add `ZEPPELIN_HOME` as ENV to `zeppelin-server` container in 
[zeppelin-server.yaml](https://github.com/apache/zeppelin/blob/master/k8s/zeppelin-server.yaml#L132)
   `- name: ZEPPELIN_HOME
             valueFrom:
               configMapKeyRef:
                 name: zeppelin-server-conf-map
                 key: ZEPPELIN_HOME`
   - then, change [Line 
283](https://github.com/apache/zeppelin/blob/master/zeppelin-plugins/launcher/k8s-standard/src/main/java/org/apache/zeppelin/interpreter/launcher/K8sRemoteInterpreterProcess.java#L283)
 to
   `envs.put("ZEPPELIN_HOME", envs.getOrDefault("ZEPPELIN_HOME", 
System.getenv("ZEPPELIN_HOME")));`


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