ruiliang created AMBARI-26018:
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Summary: namenodes ha A third nn service is supported
Key: AMBARI-26018
URL: https://issues.apache.org/jira/browse/AMBARI-26018
Project: Ambari
Issue Type: Wish
Components: ambari-server
Affects Versions: 2.7.3
Reporter: ruiliang
Attachments: image-2023-10-26-11-42-30-301.png
How to add namenode ha nn3 node service? At present, I do not see this
operation function in the interface, can I support it? At present, the HA of
two hadoop clusters has become an unreliable bottleneck, and it is necessary to
expand the third nn3 service for business-demanding services.
The hdp and hadoop documentation is clearly configurable, but why doesn't
ambari support it?
https://hadoop.apache.org/docs/stable/hadoop-project-dist/hadoop-hdfs/HDFSHighAvailabilityWithNFS.html
[https://docs.cloudera.com/HDPDocuments/HDP3/HDP-3.1.0/fault-tolerance/content/configuring_the_namenode_ha_cluster.html]
{code:java}
<property>
<name>dfs.ha.namenodes.mycluster</name>
<value>nn1,nn2,nn3</value>
</property>{code}
!image-2023-10-26-11-42-30-301.png!
How does ambari accomplish the function of add nn3 in this case ？
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