I need to increase ulimit -n on Ubuntu 12.04. It's currently:
open files (-n) 1024
(1024 soft, 4096 hard)
In /etc/security/limits.conf I have:
root soft nofile 10240 root hard nofile 10240
In /etc/pam.d/login, /etc/pam.d/common-session, /etc/pam.d/common-session-noninteractive I have
session required pam_limits.so
However, ulimit -n keeps resetting to 1024. I need to increase it as I use Node.js / socket.io with forever and the limit is limiting the maximum of concurrent visitors / connections.