/etc/security/limits.conf memlock changes have no effect

[David Favor]

APT reports package as libpam-modules + launchpad says pam is the closest package. Please change package name, if required.

Summary says it all.

Default of memlock seems to be 64 (which limits.conf suggests means 64k). Changing this setting seems to have no effect.

The following entry seems to be correct, and has no effect after reboot, meaning ulimit -l still reports 64. I've tried 128, -1, unlimited, nothing seems to work.

Maybe I just misunderstand the correct settings or maybe Ubuntu overrides limits.conf at boot time.

My entry...

* - memlock unlimited

Be great if someone can help me fixing this, as likely it's a simple config file fix somewhere.

Thanks!

[David Favor (davidfavor)]

This also fails... meaning... ulimit -l as root still shows 64...

* - memlock unlimited
root - memlock unlimited

[David Favor (davidfavor)]

Looks like the problem was UsePAM=yes in /etc/ssh/sshd_config.

So system wide memlock is effected + ssh logins only effected if PAM is enabled to set limits.

[David Favor (davidfavor)]

This ticket can be closed.