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For cluster managed by Ambari, it seems Ambari will also be a single point of failure. Should we consider build HA for Ambari ? If yes, what is the common practice ? It seems there are many discussion on HA for names server, Hive, etc, but seems nothing for Ambari, also wondering why.

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Super Mentor

Unfortunately currently there is no HA feature available for Ambari yet.

However you can refer to the following JIRAs where the discussion is going on in this regard:

https://issues.apache.org/jira/browse/AMBARI-17126 AND https://issues.apache.org/jira/browse/AMBARI-7896

- Following link also has some good information regarding the same: https://community.hortonworks.com/questions/402/how-to-setup-high-availability-for-ambari-server.htm...

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Super Mentor

Unfortunately currently there is no HA feature available for Ambari yet.

However you can refer to the following JIRAs where the discussion is going on in this regard:

https://issues.apache.org/jira/browse/AMBARI-17126 AND https://issues.apache.org/jira/browse/AMBARI-7896

- Following link also has some good information regarding the same: https://community.hortonworks.com/questions/402/how-to-setup-high-availability-for-ambari-server.htm...

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