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I found this article very helpful however I had to change all of the references from mysql to mariadb.. once I did that I was able to quickly install a LAMP stack on a new cloud based CentOS server:
Basically, All I did was replace almost every instance in the supplied command lines from mysql to mariadb.. the final command I think was this:
sudo sh -c "yum install httpd httpd-devel mariadb mariadb-server mariadb-devel php php-mysql php-common php-gd php-mbstring php-mcrypt php-devel php-xml -y; service mariadb start && mysql_secure_installation && service mariadb restart && service httpd start && chkconfig httpd on && chkconfig mariadb on && iptables -I INPUT -p tcp -m tcp --dport 80 -j ACCEPT && /etc/init.d/iptables save"
If someone could double check that and update the page (and the example commands that are broken down into steps) I think it would be a real benefit to the community. That article still comes up as a top search for "rackspace lamp install"