Centos upgrade

Hello Guyz

First of all, I'm new to Linux with basic SSH knowledge, so any additional help would be much appreciated.

I'm using a Linux VPS

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cat /etc/redhat-release

CentOS release 5.10 (Final)

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I know this is an outdated version. My VPS came with all necessary modules : PHP, exim, CSF, basically everything you need to run a webserver.

I've already deployed few websites like Prestashop, Magento and all working great. I need some basic guides on how can I update my centos to latest version **Without** affecting any of my current working website/system

I'm using cPanel/WHM

Thanks in advance

John

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