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https://issues.apache.org/jira/browse/YARN-7197?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16167890#comment-16167890
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Eric Badger commented on YARN-7197:
-----------------------------------
{quote}
For example, if a system admin would like to allow mounting of /mnt/hdfs/user/$
\{USER\}
but not /mnt/hdfs/user/yarn using nfs gateway.
{quote}
Ok that makes sense from a usability point of view. I think this should be
identified in a comment/in the docs so that it's clear what the intentions of
both the whitelist and blacklist are. Most situations should be handled via the
whitelist and won't have to touch the blacklist at all
> Add support for a volume blacklist for docker containers
> --------------------------------------------------------
>
> Key: YARN-7197
> URL: https://issues.apache.org/jira/browse/YARN-7197
> Project: Hadoop YARN
> Issue Type: Sub-task
> Components: yarn
> Reporter: Shane Kumpf
>
> Docker supports bind mounting host directories into containers. Work is
> underway to allow admins to configure a whilelist of volume mounts. While
> this is a much needed and useful feature, it opens the door for
> misconfiguration that may lead to users being able to compromise or crash the
> system.
> One example would be allowing users to mount /run from a host running
> systemd, and then running systemd in that container, rendering the host
> mostly unusable.
> This issue is to add support for a default blacklist. The default blacklist
> would be where we put files and directories that if mounted into a container,
> are likely to have negative consequences. Users are encouraged not to remove
> items from the default blacklist, but may do so if necessary.
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