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Posted to yarn-issues@hadoop.apache.org by "Allen Wittenauer (JIRA)" <ji...@apache.org> on 2015/02/24 18:19:04 UTC

[jira] [Commented] (YARN-3252) YARN LinuxContainerExecutor runs as nobody in Simple Security mode for all applications

    [ https://issues.apache.org/jira/browse/YARN-3252?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14335107#comment-14335107 ] 

Allen Wittenauer commented on YARN-3252:
----------------------------------------

See YARN-2424.

> YARN LinuxContainerExecutor runs as nobody in Simple Security mode for all applications
> ---------------------------------------------------------------------------------------
>
>                 Key: YARN-3252
>                 URL: https://issues.apache.org/jira/browse/YARN-3252
>             Project: Hadoop YARN
>          Issue Type: Bug
>    Affects Versions: 2.3.0, 2.4.0, 2.6.0, 2.5.1, 2.5.2
>         Environment: Linux
>            Reporter: Eric Yang
>            Priority: Critical
>
> When using YARN + Slider + LinuxContainerExecutor, all slider application are running as nobody.  This is because the modification in YARN-1253 to restrict all containers to run as a single user.  This becomes a exploite to any application that runs inside YARN + Slider + LCE.  The original behavior is more correct.  The original statement indicated that users can impersonate any other users.  This supposed to be only valid for proxy users, who can proxy as other users.  It is designed as intended that the service user needs to be trusted by the framework to impersonate end users.



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