Updating mysql and php for centos 6

[dickbutt]

I recently attempted to upgrade my php version from 5.6.33 to 7.1 and failed. My websites were working fine but when i login to vestacp -> server -> Php-fpm was greyed out, i could not start or stop and my phpmyadmin was no longer working.

I am on Centos 6.9

I am also looking to upgrade mysql 5.5 to mariaDB. Can i use a regular guide for this or some special vesta configuration has to be done ?