Varun Vasudev commented on YARN-5534:

It's going to end up being a combination. Some settings have to be done in the 
container-executor.cfg(like whitelisted volume mounts), and some will go into 

For example(just made up), an admin may want to mount /data-volume into every 
container by some subset of users. container-executor.cfg should have a setting 
permitting the mounting of /data-volume but yarn-site.xml should have feature 
to mount it into every container for those users. Does that make sense?

> Allow whitelisted volume mounts 
> --------------------------------
>                 Key: YARN-5534
>                 URL: https://issues.apache.org/jira/browse/YARN-5534
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: yarn
>            Reporter: luhuichun
>            Assignee: Shane Kumpf
>         Attachments: YARN-5534.001.patch, YARN-5534.002.patch, 
> YARN-5534.003.patch
> Introduction 
> Mounting files or directories from the host is one way of passing 
> configuration and other information into a docker container. 
> We could allow the user to set a list of mounts in the environment of 
> ContainerLaunchContext (e.g. /dir1:/targetdir1,/dir2:/targetdir2). 
> These would be mounted read-only to the specified target locations. This has 
> been resolved in YARN-4595
> 2.Problem Definition
> Bug mounting arbitrary volumes into a Docker container can be a security risk.
> 3.Possible solutions
> one approach to provide safe mounts is to allow the cluster administrator to 
> configure a set of parent directories as white list mounting directories.
>  Add a property named yarn.nodemanager.volume-mounts.white-list, when 
> container executor do mount checking, only the allowed directories or 
> sub-directories can be mounted. 

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