Not a particularly exciting first post back after so long with nothing but hopefully it’s useful none the less. On a CentOS box you can’t get MySQL 5.1 or PHP 5.3 easily from yum. Luckily a chap known as remi as a handy repo that contains both said packages. To get the repo running you’ll need to install a couple of RPM’s: epel-release-5-4.noarch.rpm remi-release-5.rpm To install them:
rpm -Uvh epel-release-5*.rpm remi-release-5*.rpm
After that jump into /etc/yum.repos.d where you should now have a remi.repo file. Edit that and change enabled=0 to enabled=1 and you’re good to go. Do a yum check-updates and install away.