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From "Allen Wittenauer (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-5428) Allow for specifying the docker client configuration directory
Date Wed, 03 Aug 2016 05:44:20 GMT

    [ https://issues.apache.org/jira/browse/YARN-5428?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15405355#comment-15405355
] 

Allen Wittenauer commented on YARN-5428:
----------------------------------------

Why would an admin provide creds and not individual users?  Why should there be a global store
of credentials?  What prevents a user from stealing these global creds?

> Allow for specifying the docker client configuration directory
> --------------------------------------------------------------
>
>                 Key: YARN-5428
>                 URL: https://issues.apache.org/jira/browse/YARN-5428
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: yarn
>            Reporter: Shane Kumpf
>            Assignee: Shane Kumpf
>         Attachments: YARN-5428.001.patch, YARN-5428.002.patch, YARN-5428.003.patch, YARN-5428.004.patch
>
>
> The docker client allows for specifying a configuration directory that contains the docker
client's configuration. It is common to store "docker login" credentials in this config, to
avoid the need to docker login on each cluster member. 
> By default the docker client config is $HOME/.docker/config.json on Linux. However, this
does not work with the current container executor user switching and it may also be desirable
to centralize this configuration beyond the single user's home directory.
> Note that the command line arg is for the configuration directory NOT the configuration
file.
> This change will be needed to allow YARN to automatically pull images at localization
time or within container executor.



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