It is necessary to run cPanel update if OS template named "CentOS 5.6 cPanel x64" is selected as the operating system of virtual machine at first start up. This is to ensure cPanel system is up to date where fill with enriched functions and a lot patches.
Steps to update cPanel through interface:
1. Log into cPanel at http://vmip/whm or http://vmip:2086 .
2. Find "upgrade".
3. Under cPanel section, click "Upgrade to Latest Version
Steps to update cPanel through SSH:
1. Using any SSH client log into virtual machine with your IP address and password. P/s : SSH port is 22 or 8288.
2. Execute /scripts/upcp