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From "Shane Kumpf (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-7430) User and Group mapping are incorrect in docker container
Date Tue, 07 Nov 2017 20:59:00 GMT

    [ https://issues.apache.org/jira/browse/YARN-7430?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16242862#comment-16242862
] 

Shane Kumpf commented on YARN-7430:
-----------------------------------

{quote}
Privileged container does not need to have --user flag. They are contradiction to each other
in general. 
{quote}
Hey [~eyang], I'm not sure that's the case. Without the user related the flag, privileged
or not, the process in the container will run as whatever user was specified in the image.
This leads to permission denied related issues with the localized resources and launch scripts.

> User and Group mapping are incorrect in docker container
> --------------------------------------------------------
>
>                 Key: YARN-7430
>                 URL: https://issues.apache.org/jira/browse/YARN-7430
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: security, yarn
>    Affects Versions: 2.9.0, 3.0.0
>            Reporter: Eric Yang
>            Assignee: Eric Yang
>            Priority: Blocker
>         Attachments: YARN-7430.001.patch
>
>
> In YARN-4266, the recommendation was to use -u [uid]:[gid] numeric values to enforce
user and group for the running user.  In YARN-6623, this translated to --user=test --group-add=group1.
 The code no longer enforce group correctly for launched process.  
> In addition, the implementation in YARN-6623 requires the user and group information
to exist in container to translate username and group to uid/gid.  For users on LDAP, there
is no good way to populate container with user and group information. 



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