set open file limit

filelimits.sh

#!/bin/bash
cp /etc/sysctl.conf /etc/sysctl.conf.20140808
echo 'fs.file-max = 64000'>>/etc/sysctl.conf
echo 'root       soft    nofile   64000'>>/etc/security/limits.conf
echo 'root       hard    nofile  64000'>>/etc/security/limits.conf

# echo 'mongodb       soft    nofile   64000'>>/etc/security/limits.conf
# echo 'mongodb       hard    nofile  64000'>>/etc/security/limits.conf

sysctl -p
ulimit -n 64000

echo 'session required pam_limits.so' >> /etc/pam.d/common-session