Home Forums HDFS Add master services like HBase Master or Zookeeper after successful deployment

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This topic contains 4 replies, has 4 voices, and was last updated by  Larry Liu 1 year, 2 months ago.

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  • #14938

    Hi,

    Firstly, many thanks for providing such a great hadoop platform as HDP 1.2 ! We appreciate that.

    My problem is the following :

    I’ve successfully deployed HDP 1.2 using Ambari.

    But my cluster has grown since this time and I would like to add more master services like Hbase masters, Zookeeper
    masters … to my cluster.

    Is there any way to do that through Ambari, or directly with shell commands. Maybe I miss something, but it seems to me
    I didn’t see any documentations about that.

    If it’s not a feature available for the moment, may you provide a release date for this feature ?

    Many thanks,

    Regards,

    François

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  • #14966

    Larry Liu
    Moderator

    Hi, François

    The feature is in roadmap. Please keep checking.

    Larry

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    #14965

    Thanks for your answer !

    For your information, I add ” manually ” a zookeeper master service on a node using your existing Puppet manifests. This works good, but the problem is that dependencies for other services like Hbase (in the case of Zookeeper) are not taken into account in a sustainable manner.
    Even if I modify Hase configuration file to add my new zookeeper host, as soon as I restart the service with Ambari, my modifications are lost because I think valid configuration is stored in Pgsql database and Puppet manifests are generated on the fly and based on these data. This way of working sounds good for me, because you ensure you always get valid configurations, but it prevents all kind of local configuration modifications.

    Thanks again and have a good day !

    François

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    #14945

    tedr
    Moderator

    Hi Francois,

    Thanks for your kind remarks about HDP 1.2 and Ambari.

    I am looking into this issue, but it looks like you are correct that there is currently not a method to add new master services to an already installed cluster, only slave or client services. If I find differently in my testing I’ll post again.

    Thanks again.
    Ted.

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    #14943

    Sasha J
    Moderator

    Francois,
    Ambari is not support services addition in current release…
    It should be implemented in future releases, but not now…
    However, you can add binaries and start services manually, it will not be visible by current Ambari implementation, but you will be able to start/stop it manually and use.

    Thank you!
    Sasha

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