Trying to get the equivalent of ulimit -n 20000 on a high load web server, however the /etc/security/limits.conf on ubuntu hardy doesn't seem to stick.

here is what I set in the config file.

root             soft    nofile         20000
root             hard    nofile         20000
www-data             soft    nofile         20000
www-data             hard    nofile         20000

I also tried

*             soft    nofile         20000
*             hard    nofile         20000

after rebooting, when i run ulimit -n on root, or www-data or my regular user i still see the default 1024.


You may have to uncomment pam_limits.so from the different files under /etc/pam.d (cron, su, sudo, sshd, login)

session    required   pam_limits.so

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.