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From "Shane Kumpf (JIRA)" <j...@apache.org>
Subject [jira] [Issue Comment Deleted] (YARN-7815) Mount the filecache as read-only in Docker containers
Date Sat, 27 Jan 2018 00:05:00 GMT

     [ https://issues.apache.org/jira/browse/YARN-7815?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Shane Kumpf updated YARN-7815:
    Comment: was deleted

(was: {quote} I am just wondering whether it would be more secure mounting 2. and appcache/filecache
read only but not mounting 4. 
IIRC, if usercache/_user_ is not mounted r/w, I believe writes to usercache/_user_/appcache
will be denied because docker will create the parent directories as root:root. I'll do some
more testing here based on the suggestions so far.)

> Mount the filecache as read-only in Docker containers
> -----------------------------------------------------
>                 Key: YARN-7815
>                 URL: https://issues.apache.org/jira/browse/YARN-7815
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>            Reporter: Shane Kumpf
>            Assignee: Shane Kumpf
>            Priority: Major
> Currently, when using the Docker runtime, the filecache directories are mounted read-write
into the Docker containers. Read write access is not necessary. We should make this more restrictive
by changing that mount to read-only.

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