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From "Hari Sekhon (JIRA)" <>
Subject [jira] [Created] (AMBARI-8786) Enable NameNode HA without disabling Kerberos
Date Thu, 18 Dec 2014 12:25:13 GMT
Hari Sekhon created AMBARI-8786:

             Summary: Enable NameNode HA without disabling Kerberos
                 Key: AMBARI-8786
             Project: Ambari
          Issue Type: Improvement
    Affects Versions: 1.7.0
         Environment: HDP 2.1
            Reporter: Hari Sekhon

Need to allow enabling NameNode HA without first having to disable Kerberos.

It's bad practice to disable security for the period of time it takes to enable NN HA as this
could result in data breaches for an existing cluster with data in it and this process doesn't
go down well when working for a bank.

Although ideally NN HA + Kerberos should be implemented up front before having data in the
cluster, at cluster planning time, this may not always be the case either due to newbie learning
curve or lack of the 3 nodes required for quorum (this was the case for me as I had to migrate
nodes in phases for a small staging cluster).

Must also make sure the additional required Kerberos principals for NN, journal nodes and
any additional ZooKeepers required for quorum are defined with exportable CSV for automation.
See also AMBARI-8610 and AMBARI-8785 which are related.


Hari Sekhon

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