http://cloudstack-administration.readthedocs.org/en/4.3/templates.html#system-preparation-for-linux 4-10

after-mod-tmpl.sh

#!/bin/sh
# http://cloudstack-administration.readthedocs.org/en/4.3/templates.html#system-preparation-for-linux

# cat /var/lib/dhcp/dhclient.eth0.leases
# sudo vi /etc/dhcp/dhclient-exit-hooks.d/sethostname

#cp /etc/hosts.dhcp.bak .
#sudo mv /etc/hosts.dhcp.bak /etc/hosts
sudo rm /etc/hosts.dhcp.bak

rm /home/user/.bash_history
sudo aptitude clean
sudo rm -f /etc/udev/rules.d/70*
sudo rm -f /var/lib/dhcp/dhclient.*
sudo rm -f /etc/ssh/*key*

rm /home/user/.bash_history
sudo sh -c "cat /dev/null > /var/log/audit/audit.log 2>/dev/null"
sudo sh -c "cat /dev/null > /var/log/wtmp 2>/dev/null"
sudo sh -c "logrotate -f /etc/logrotate.conf 2>/dev/null"
sudo sh -c "rm -f /var/log/*-* /var/log/*.gz 2>/dev/null"

rm /home/user/.bash_history
sudo hostname localhost
sudo sh -c "echo 'localhost' > /etc/hostname"

#passwd --expire root

rm /home/user/.bash_history
history -c
unset HISTFILE
rm /home/user/.bash_history

#sudo halt -p