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Posted to yarn-issues@hadoop.apache.org by "Shane Kumpf (JIRA)" <ji...@apache.org> on 2018/01/27 00:05:00 UTC
[jira] [Issue Comment Deleted] (YARN-7815) Mount the filecache as
read-only in Docker containers
[ 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.
{quote}
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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