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From "Jim Brennan (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-8027) Setting hostname of docker container breaks for --net=host in docker 1.13
Date Wed, 14 Mar 2018 20:31:00 GMT

    [ https://issues.apache.org/jira/browse/YARN-8027?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16399355#comment-16399355
] 

Jim Brennan commented on YARN-8027:
-----------------------------------

[~suma.shivaprasad], thanks for your comment.  It sounds like the current patch would be
ok with you then?  It preserves the current behavior except in the case where network is
host and Registry DNS is not enabled.

 

> Setting hostname of docker container breaks for --net=host in docker 1.13
> -------------------------------------------------------------------------
>
>                 Key: YARN-8027
>                 URL: https://issues.apache.org/jira/browse/YARN-8027
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: yarn
>    Affects Versions: 3.0.0
>            Reporter: Jim Brennan
>            Assignee: Jim Brennan
>            Priority: Major
>         Attachments: YARN-8027.001.patch
>
>
> In DockerLinuxContainerRuntime:launchContainer, we are adding the --hostname argument
to the docker run command to set the hostname in the container to something like:  ctr-e84-1520889172376-0001-01-000001.
> This does not work when combined with the --net=host command line option in Docker 1.13.1.
 It causes multiple failures when the client tries to resolve the hostname and it fails.
> We haven't seen this before because we were using docker 1.12.6 which seems to ignore
--hostname when you are using --net=host.



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