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From Ravi Prakash <ravi...@ymail.com>
Subject Re: YARN and LinuxContainerExecutor in simple security mode
Date Mon, 29 Jun 2015 19:43:37 GMT
Hi Tomasz!
It is tricky to set up, but there are no implications to security if you configure it correctly.
Please read the discussion on [YARN-2424] LCE should support non-cgroups, non-secure mode


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| [YARN-2424] LCE should support non-cgroups, non-secure mode - ASF JIRAAfter YARN-1253, LCE
no longer works for non-secure, non-cgroup scenarios.  |
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| View on issues.apache.org | Preview by Yahoo |
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     On Thursday, June 25, 2015 2:30 AM, Tomasz Fruboes <Tomasz.Fruboes@fuw.edu.pl>

 Dear Experts,

  I'm running a small YARN cluster configured to use simple security, 
LinuxContainerExecutor and


  in order to get correct uid when executing jobs. This is needed to 
access files from network exported filesystem.

  I was wondering - does this posses any security risk (since 
nonsecure-mode.limit is set to true by default in the simple security 
mode)? I.e. is there a known way for a user to get uid of different user 
with such configuration?


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