look like normal, ... just additional requairement for your site engine.
I don't know
"example" for drupal, it was less mbstring & pdo driver
yum install php54-mysql
yum install php54-mbstring
####for install driver
cd /usr/local/lxlabs/kloxo/httpdocs/htmllib/lib/pserver/driver
wget https://github.com/mustafaramadhan/kloxo/raw/dev/kloxo/httpdocs/htmllib/lib/pserver/driver/mysqldb__mysqllib.php --no-check-certificate
by the way, if using php53u : the site is running normally ?