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From "Shane Kumpf (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-7814) Remove automatic mounting of the cgroups root directory into Docker containers
Date Thu, 25 Jan 2018 01:27:00 GMT

    [ https://issues.apache.org/jira/browse/YARN-7814?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16338552#comment-16338552
] 

Shane Kumpf commented on YARN-7814:
-----------------------------------

Thanks, [~miklos.szegedi@cloudera.com]. I did see that one and considered just re-purposing
it, but it seemed it was aiming towards adding other options as well. If you'd prefer, we
can re-purpose that for outright removal of the automatic mounting. I also think YARN-7231
and YARN-7232 can be closed if everyone agrees the automatic mounting can be removed.

> Remove automatic mounting of the cgroups root directory into Docker containers
> ------------------------------------------------------------------------------
>
>                 Key: YARN-7814
>                 URL: https://issues.apache.org/jira/browse/YARN-7814
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>            Reporter: Shane Kumpf
>            Assignee: Shane Kumpf
>            Priority: Major
>
> Currently, all Docker containers launched by {{DockerLinuxContainerRuntime}} get /sys/fs/cgroup
automatically mounted. Now that user supplied mounts (YARN-5534) are in, containers that require
this mount can request it (with a properly configured mount whitelist).
> I propose we remove the automatic mounting of /sys/fs/cgroup into Docker containers.



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