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Hadoop: YARN-UI V2
=================
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Prerequisites
-------------
Please make sure Hadoop is built by passing -Pyarn-ui to Maven (reference to BUILDING.txt for more details)
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Configurations
-------------
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*In `yarn-site.xml` *
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| Configuration Property | Description |
|:---- |:---- |
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| `yarn.webapp.ui2.enable` | *(Required)* In the server side it indicates whether the new YARN-UI v2 is enabled or not. Defaults to `false` . |
| `yarn.webapp.ui2.war-file-path` | *(Optional)* WAR file path for launching yarn UI2 web application. By default this is empty and YARN will lookup required war file from classpath |
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Please note that, If you run YARN daemons locally in your machine for test purpose,
you need the following configurations added to `yarn-site.xml` to enable cross
origin (CORS) support.
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| Configuration Property | Value | Description |
|:---- |:---- |:---- |
| `yarn.timeline-service.http-cross-origin.enabled` | true | Enable CORS support for Timeline Server |
| `yarn.resourcemanager.webapp.cross-origin.enabled` | true | Enable CORS support for Resource Manager |
| `yarn.nodemanager.webapp.cross-origin.enabled` | true | Enable CORS support for Node Manager |
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Also please ensure that CORS related configurations are enabled in `core-site.xml` .
Kindly refer [here ](https://hadoop.apache.org/docs/stable/hadoop-project-dist/hadoop-common/HttpAuthentication.html )
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Use it
-------------
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Open your browser, go to `rm-address:8088/ui2` and try it!
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Notes
-------------
- This UI framework is not verified under security environment, please use with caution under security environment.
