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https://issues.apache.org/jira/browse/ZOOKEEPER-1422?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13573065#comment-13573065
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Patrick Hunt commented on ZOOKEEPER-1422:
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[~thw] are you talking about HADOOP-8381 ?
> Support _HOST substitution in JAAS configuration
> -------------------------------------------------
>
> Key: ZOOKEEPER-1422
> URL: https://issues.apache.org/jira/browse/ZOOKEEPER-1422
> Project: ZooKeeper
> Issue Type: Improvement
> Affects Versions: 3.4.0
> Reporter: Thomas Weise
>
> At the moment a JAAS configuration file needs to be created with the Kerberos
> principal specified as user/host. It would be much easier for deployment
> automation if the host portion could be resolved at startup time, as
> supported in Hadoop (something like user/_HOST instead of user/hostname). A
> configuration alternative to global JAAS conf would be even better (via
> direct properties in zoo.cfg?).
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