From terminal in ubuntu, change ulimit for file descriptor number

Question

Fron the terminal I am trying to change the number of file descriptions open and they will not stick. How, from the terminal do I change the ulimit? Per the below, when I r

Answer 1

I had a similar issue when trying to raise the number of file descriptors for Nginx. I had to change nofile in /etc/security/limits.conf for the www-data user:

www-data    hard    nofile    16384
www-data    soft    nofile    16384

After this change ulimit still showed a limit of 1024. The solution was to enable *pam_limits* in /etc/pam.d/su. I just uncommented the line:

session    required    pam_limits.so

Changing this value didn't require a restart, I just logged in as www-data again. Now, running ulimit -a revealed the value 16384.

Hope this helps.