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From "Wangda Tan (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-6726) Fix issues with docker commands executed by container-executor
Date Mon, 24 Jul 2017 23:03:02 GMT

    [ https://issues.apache.org/jira/browse/YARN-6726?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16099233#comment-16099233

Wangda Tan commented on YARN-6726:

Thanks [~shanekumpf@gmail.com] for the patch. 

Discussed with Shane offline, in general the approach looks good, I haven't done detailed
reviews of code yet. Few comments/questions:

1) Could we do more strict container_id checking, checking string starts with container_ might
not be enough? Probably you can check the method (validate_container_id) I added to YARN-6852.
Which we can avoid less malicious kill container, etc.

2) {{LOGFILE flush}}, I'm not quite sure about this item, could you elaborate?

3) Regarding to comment from [~chris.douglas], 

bq. We also need to prevent the yarn user from becoming root  ... 
If we can limit docker command only apply to containers launched by YARN (which we can use
strict container_id pattern matching to identify that), it should be already much better than
what we have today. We can implement other options such as enable/disable component, dynamic
load libraries, etc. along with YARN-5673. 

> Fix issues with docker commands executed by container-executor
> --------------------------------------------------------------
>                 Key: YARN-6726
>                 URL: https://issues.apache.org/jira/browse/YARN-6726
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: nodemanager
>            Reporter: Shane Kumpf
>            Assignee: Shane Kumpf
>         Attachments: YARN-6726.001.patch
> docker inspect, rm, stop, etc are issued through container-executor. Commands other than
docker run are not functioning properly.

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