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Eric Yang commented on YARN-7197: --------------------------------- Btw, docker doesn't support double mount like: {code} docker run -it -v /mnt/hdfs/user:/home -v /tmp/empty:/home/yarn {code} If {{/mnt/hdfs/user}} is already mounted, then yarn will show up. We have to trust that yarn directory permission is setup correctly. Bind mount a directory with blank directory will not solve any problem to hide /home/yarn directory. Filesystem ACL is the only safe guard. It's not possible to make a subdirectory disappear. > 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 > Assignee: Eric Yang > Attachments: YARN-7197.001.patch, YARN-7197.002.patch > > > 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. -- This message was sent by Atlassian JIRA (v6.4.14#64029) --------------------------------------------------------------------- To unsubscribe, e-mail: yarn-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: yarn-issues-h...@hadoop.apache.org