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From "Shi Wang (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (AMBARI-18836) Remove group readable from hdfs headless keytab
Date Wed, 25 Jan 2017 19:17:26 GMT

    [ https://issues.apache.org/jira/browse/AMBARI-18836?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15838397#comment-15838397
] 

Shi Wang commented on AMBARI-18836:
-----------------------------------

Hi Robert, thanks, I am totally fine with it.

> 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, 2.5.0
>            Reporter: Shi Wang
>            Assignee: Shi Wang
>             Fix For: trunk, 2.5.0
>
>         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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