liuxunorg opened a new pull request #3390: [ZEPPELIN-3784] Cluster management web page URL: https://github.com/apache/zeppelin/pull/3390 ### What is this PR for? 1. Show/Hide cluster Manager web page menu Zeppelin navbar checks for cluster mode via the `api/cluster/address` REST interface, and adds cluster to the zeppelin `login menu` if it is in cluster mode. 2. Cluster Manager node web page The webpage obtains all the node information in the cluster metadata through the `/api/cluster/nodes` REST interface. * All zeppelin server node informat * List of interpreter processes running in each node 3. Cluster Manager interpreter web page Clicking on the interpreter list in the node management page will open the interpreter information page, displaying all the information of the interpreter. design doc : https://docs.google.com/document/d/1a8QLSyR3M5AhlG1GIYuDTj6bwazeuVDKCRRBm-Qa3Bw/edit#heading=h.ckkbfp9161hv ### What type of PR is it? [Feature] ### Todos * [ ] [ZEPPELIN-4221 View the zeppelin service & interpreter log in the cluster management page](https://issues.apache.org/jira/browse/ZEPPELIN-4221) * [ ] [ZEPPELIN-4222 Restart the zeppelin service in the cluster management page](https://issues.apache.org/jira/browse/ZEPPELIN-4222) * [ ] [ZEPPELIN-4223 Restart the zeppelin interpreter in the cluster management page](https://issues.apache.org/jira/browse/ZEPPELIN-4223) ### What is the Jira issue? * https://issues.apache.org/jira/browse/ZEPPELIN-3784 ### How should this be tested? * [CI Pass](https://travis-ci.org/liuxunorg/zeppelin/builds/552323214) ### Screenshots (if appropriate)  ### Questions: * Does the licenses files need update? * Is there breaking changes for older versions? * Does this needs documentation?
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