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https://issues.apache.org/jira/browse/OOZIE-1865?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14062293#comment-14062293
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Arpit Gupta commented on OOZIE-1865:
------------------------------------

Ah if no code change is needed thats even better :). Thanks for explaining it 
[~rkanter].

I got confused by

{code}
+
+2a. When creating the keytab used by Oozie, make sure to include Oozie's 
principal and the two HTTP principals mentioned above.
{code}

I assumed that this was the new requirement. But from your comments i should be 
able to set the spengo principal config to * as long as i am using Hadoop 2.5.0



> Oozie servers can't talk to each other with Oozie HA and Kerberos
> -----------------------------------------------------------------
>
>                 Key: OOZIE-1865
>                 URL: https://issues.apache.org/jira/browse/OOZIE-1865
>             Project: Oozie
>          Issue Type: Bug
>          Components: HA
>    Affects Versions: trunk
>            Reporter: Robert Kanter
>            Assignee: Robert Kanter
>             Fix For: trunk
>
>         Attachments: OOZIE-1865.patch, OOZIE-1865.patch
>
>
> When you use Oozie HA with Kerberos, you have to set 
> {{oozie.authentication.kerberos.principal}} to {{HTTP/<load-balancer-host>}} 
> instead of {{HTTP/<oozie-server-host>}}.  This allows clients to connect to 
> any of the Oozie servers through the load balancer.  However, it also blocks 
> clients from directly talking to any of the Oozie servers.  In and of itself, 
> that's okay, but it turns out that in most cases, it also blocks the Oozie 
> servers from talking to each other, namely for log streaming, the 
> sharelibupdate command, and collating instrumentation/metrics (OOZIE-1676).  
> Ultimately, what we need to do is allow Oozie to use both 
> {{HTTP/<load-balancer-host>}} instead of {{HTTP/<oozie-server-host>}} at the 
> same time so that clients (including Oozie servers, users, Web UI, etc) can 
> talk to Oozie both through the load balancer and directly.  If my 
> understanding of HADOOP-10158 is correct, HADOOP-10158 adds this ability.  
> For this JIRA, we should update Oozie to take advantage of HADOOP-10158.  



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