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https://issues.apache.org/jira/browse/ZOOKEEPER-1045?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15352023#comment-15352023
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Michael Han commented on ZOOKEEPER-1045:
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[~rakeshr] One thing I spotted today is at end of Readme file:
bq. quorum.auth.kerberos.servicePrincipal=".. Service Principal ..Defaulting to 
zkquorum/localhost"

This belongs to zoo.cfg, so it would be better to move this section up and make 
it part of zoo.cfg configuration section. I am speaking from a user perspective 
because I was not aware this value is important and it should be set in zoo.cfg 
so I got auth errors when login KDC, and took a while to figure out. When we 
have the wiki / user guide page set up, we'd also do something similar by 
making sure the configurations belong to same sections are clustered together.

> Support Quorum Peer mutual authentication via SASL
> --------------------------------------------------
>
>                 Key: ZOOKEEPER-1045
>                 URL: https://issues.apache.org/jira/browse/ZOOKEEPER-1045
>             Project: ZooKeeper
>          Issue Type: New Feature
>          Components: server
>            Reporter: Eugene Koontz
>            Assignee: Rakesh R
>            Priority: Critical
>             Fix For: 3.4.9, 3.5.3
>
>         Attachments: 0001-ZOOKEEPER-1045-br-3-4.patch, 
> 1045_failing_phunt.tar.gz, ZK-1045-test-case-failure-logs.zip, 
> ZOOKEEPER-1045-00.patch, ZOOKEEPER-1045-Rolling Upgrade Design Proposal.pdf, 
> ZOOKEEPER-1045-br-3-4.patch, ZOOKEEPER-1045-br-3-4.patch, 
> ZOOKEEPER-1045-br-3-4.patch, ZOOKEEPER-1045-br-3-4.patch, 
> ZOOKEEPER-1045-br-3-4.patch
>
>
> ZOOKEEPER-938 addresses mutual authentication between clients and servers. 
> This bug, on the other hand, is for authentication among quorum peers. 
> Hopefully much of the work done on SASL integration with Zookeeper for 
> ZOOKEEPER-938 can be used as a foundation for this enhancement.



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