How To Increase the Open Files ulimit on Ubuntu

Author: erics, Posted April 29th, 2013 at 3:38:40pm

Add the following four lines to the bottom of /etc/security/limits.conf:

root soft nofile 65535 root hard nofile 65535 * soft nofile 65535 * hard nofile 65535

NOTE: All whitespace MUST be a single tab!

Also edit these three files:

/etc/pam.d/su /etc/pam.d/common-session /etc/pam.d/common-session-noninteractive

and add the following one line:

session required pam_limits.so

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