[Centos] CentOS 3.1: sshd and pam /etc/security/limits.conf file descriptor
sstaats at questia.com
Mon Sep 13 21:57:44 UTC 2004
Why can't non-uid 0 users have more than 1024 file descriptors when
logging in via ssh?
I'm trying to allow a user to have a hard limit of 8192 file
descriptors(system defaults to 1024) via the following setting in
jdoe hard nofile 8192
But when jdoe logs in via ssh and does 'ulimit -Hn' he gets '1024' as a
response. If he tries to set it with 'ulimit -Hn 8192' he gets an
'Operation not permitted' error. If jdoe instead telnets to the box, he
gets the hard limit of 8192 file descriptors.
Here is what happens when I set the hard limit to 512 in limits.conf:
jdoe hard nofile 512
When jdoe logs in via ssh, he gets a hard limit of 512 file
descriptors. The same goes for telnet. So ssh is certainly reading the
limits.conf file and applying the settings, so long as nofile <= 1024.
Why won't ssh allow users to have more than 1024 file descriptors???
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