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https://issues.apache.org/jira/browse/YARN-5428?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15403785#comment-15403785
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Shane Kumpf commented on YARN-5428:
-----------------------------------
We don't pass down the $HOME environment variable or expand out ~, so the
default setting of ~/.docker/config.json will not be honored when running
docker containers on YARN.
This patch will give you choice as to where you store the config.json file. An
administrator still needs to deploy config.json to the location specified by
this configuration. Deploying the config.json file pre-populated with
credentials is an alternative to the interactive "docker login" command. Also
note that other client configuration can be stored in config.json, such as
formatting rules, http proxy settings and a few others.
> 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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