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https://issues.apache.org/jira/browse/AMBARI-18836?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15838048#comment-15838048
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Robert Levas commented on AMBARI-18836:
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[~amagyar]... I am not sure why it was not pushed to branch-2.5. I will push
it there...
[~Wancy]... If you have an issue with that, I will revert.
> Remove group readable from hdfs headless keytab
> -----------------------------------------------
>
> Key: AMBARI-18836
> URL: https://issues.apache.org/jira/browse/AMBARI-18836
> Project: Ambari
> Issue Type: Bug
> Affects Versions: trunk
> Reporter: Shi Wang
> Assignee: Shi Wang
> Fix For: trunk
>
> Attachments:
> 0001-AMBARI-18836-Remove-group-readable-from-hdfs-headles.patch,
> AMBARI-18836-test_failure.patch
>
>
> The Smoke and “Headless” Service users are used by Ambari to perform service
> “smoke” checks and run alert health checks.
> The permission for hdfs.headless.keytab is 440. But it will cause security
> concern to allow other service user in hadoop group to kinit hdfs headless
> principal using hdfs.headless.keytab. In this way, other service user could
> "pretend" to be hdfs user and be granted hdfs user's authorities.
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