[jira] [Commented] (MESOS-2790) Capture and report docker issues as part of mesos-master logs.

["Timothy Chen (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/MESOS-2790?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14569832#comment-14569832 ] 

Timothy Chen commented on MESOS-2790:
-------------------------------------

We actually recently put in a change, that capture the docker run error back to the scheduler, so if you're using a custom scheduler it will be in your TaskStatus update message.

> Capture and report docker issues as part of mesos-master logs.
> --------------------------------------------------------------
>
>                 Key: MESOS-2790
>                 URL: https://issues.apache.org/jira/browse/MESOS-2790
>             Project: Mesos
>          Issue Type: Improvement
>          Components: docker
>    Affects Versions: 0.22.1
>         Environment: CentOS 7 x86-84
>            Reporter: Casey Sybrandy
>
> I just ran into an issue today where docker ran into an error where it couldn't update it's iptables chain.  (It was missing for some reason.)  It took a while to debug the problem because as far as mesos was concerned, there were no errors.  Executing the container simply failed.
> To try to make it easier to know what's going on, is it possible for the mesos slaves to capture any docker errors and report them as part of the mesos master log?  Even better would be if it could report the error via the UI.  At a bare minimum, and only if you can't nicely capture the docker error, report that a docker error has occurred and which machine it occurred on.



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