[HDFS-12961] Ozone: Use relative resource urls in KSM/SCM web ui

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: HDFS-7240
• Component/s: HDFS-7240
• Hadoop Flags: Reviewed
• Assignee: Marton Elek
• Reporter: Marton Elek
• Created: 23/Dec/17 13:40
• Updated: 08/Oct/19 13:11
• Resolved: 04/Jan/18 18:40

Description

The current SCM/KSM web ui (+namenode/datanode) uses absolute urls:

Css is defined as /static/..., http calls use /jmx as url, etc.

This is problem with typical cloud native environments where some components could be behind a reverse proxy.

For example in kubernetes the component could be accessible via the kubctl proxy and specific url:

http://localhost:8001/api/v1/namespaces/default/services/ozonetest-http-ksm:web/proxy/

This url points to the scm web ui but all of the resources are loaded from http://localhost:8001 as we use absolute urls.

I suggest to use relative url everywhere. It could work both with standalone cluster (were the default context is the /) and with proxied environment (where the scm location could be different).

Issue Links

• relates to: HADOOP-15956 Use relative resource URLs across WebUI components