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From "Shane Kumpf (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-5428) Allow for specifying the docker client configuration directory
Date Wed, 03 Aug 2016 17:20:20 GMT

    [ https://issues.apache.org/jira/browse/YARN-5428?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15406249#comment-15406249
] 

Shane Kumpf commented on YARN-5428:
-----------------------------------

They most certainly can. The user would set the docker client config directory at job submission
time to point to where their personal config.json file lives.

This is simply setting a client config directory. How you and your users decide to use it/enforce
it in your large environment is up to you. This does not force you into storing your credentials
in the config. The client config is also used for other client config as well, such as HTTP
proxy settings, which could be quite useful to define cluster wide. There is no default setting
enforced by YARN.

> 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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