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From "Intekhab Choudhury (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (AMBARI-7896) High Availability Ambari Server
Date Tue, 26 Apr 2016 19:38:13 GMT

    [ https://issues.apache.org/jira/browse/AMBARI-7896?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15258765#comment-15258765
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Intekhab Choudhury commented on AMBARI-7896:
--------------------------------------------

As stated above, for HA

-Both servers should point to the same database (external to Ambari Server) .  Preferably
Server.jdbc.hostname should point to a HA DB Cluster from both server's  ambari.properties.

-Load Balancer (preferably an external solution, like F5, Cisco, Brocade etc) to create VIP
and use the Ambari server as Real to direct traffic to either host rather than keeping one
as Standby  (Agent ini file should point to DNS of VIP rather than to a server directly)




> High Availability Ambari Server
> -------------------------------
>
>                 Key: AMBARI-7896
>                 URL: https://issues.apache.org/jira/browse/AMBARI-7896
>             Project: Ambari
>          Issue Type: Improvement
>          Components: ambari-server
>         Environment: HDP 2.1
>            Reporter: Hari Sekhon
>
> Ambari server needs high availability as loss of the Ambari server machine would leave
it's cluster unmanageable.
> This could reuse ZooKeeper for Active/Standby election. I'm not sure if it's practical
in scalability terms to store the configurations in ZK for management of larger clusters,
perhaps that could use HA databases such as MySQL multi-master or replicate the config itself
at the application layer to the standby Ambari server.
> Right now I guess you can roll your own with Linux HA + DRBD but it feels like this should
be native as per other components that leverage ZooKeeper.



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