Cloned Red Hat/CentOS/Scientific Linux Virtual Machines and “Device eth0 does not seem to be present” Message

See this link.
or just delete /etc/udev/rules.d/70-persistent-net.rules and reboot the virtual machine.
Then you can see eth0. :)

Cacti plugin installation problem

When you applied the pa.sql to cacti database, you might face the following error.

ERROR 1064 (42000) at line 5: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'TYPE=MyISAM' at line 12

To get around this, you have to edit pa.sql and replace the word TYPE to ENGINE like this.

:%s/TYPE/ENGINE/g

Then excute the sql file.:)