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Old 05-13-2014, 11:15 AM   #1
babyPen
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Registered: May 2014
Posts: 17

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fatal: setresuid 745600: Resource temporarily unavailable


I had an issue this morning where had to kill a process in order to bring things back to normal.

On one of my servers with my application-id when I tried to login via putty the login never was successful [ did nothing just sat on putty blank screen], however to the same server when tried using other ID's I was able to login, from the system level logs, I was able to see that whenever the APP-ID was trying to login it was recording:

sshd[23902]: fatal: setresuid 745600: Resource temporarily unavailable
sshd[23838]: Received disconnect from xx.xxx.xxx.xx: xx: Connection discarded by broker

Note: IP number is been masqueraded to XX

This was happening only for this particular ID, the ulimit -u on this ID is at unlimited. When 1 of the process owned by this user was killed is when the login thru putty came back.

Can someone explain why and how the resource contention was happening only for this particular ID, even thou when the ulimit for this ID was set to unlimited.

Are there any other logs to be checked where we can understand why the contention occurred at the first place.

The ulimit -n is also at 8192 and I did not see in any log the error: "Too many files open" which makes me believe that it was not the file descriptor causing the issue.

Is there any system level limit that is getting enforced and overriding the ulimit -u, if so what file I should be looking at.

RH Version: Red Hat Enterprise Linux Server release 6.2 (Santiago)

and for the user who was already had a putty session with this ID, for him the screen just froze, even simple ls -lh command never came back with a result.


Any suggestion , please.
 
Old 05-13-2014, 06:13 PM   #2
jpollard
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Registered: Dec 2012
Location: Washington DC area
Distribution: Fedora, CentOS, Slackware
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I found this:

http://askubuntu.com/questions/11653...urce-temporari

from an Ubuntu forum that indicates that you may be running out of process table entries (rarely happens). This would appear to be a hard limit on the number of processes a specific user is restricted to.
 
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