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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 Thu, 12 Apr 2018 16:48:00 GMT

    [ https://issues.apache.org/jira/browse/YARN-8027?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16435906#comment-16435906
] 

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

Submitted new branch-3.0 patch that fixes the broken TestDockerContainerRuntime test.

> 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: Sub-task
>          Components: yarn
>    Affects Versions: 3.0.0
>            Reporter: Jim Brennan
>            Assignee: Jim Brennan
>            Priority: Major
>             Fix For: 3.1.0
>
>         Attachments: YARN-8027-branch-3.0.001.patch, YARN-8027-branch-3.0.002.patch,
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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