DRBD - Heartbeat MYSQL - Simple Mysql Connection problem

I have 2 centos running heartbeat, drbd, and mysql everything is working fine I guess as far as drbd and mysql is concert service is running if one host goes down but for some reason from web server I am not able to connect to the mysql host on my web server I get this error Couldn't fetch cmysqli in /home//public_html/core/db/[login to view URL] on line 164 PHP message: PHP Warning: mysqli_insert_id(): Couldn't fetch cmysqli in /home//public_html/core/db/[login to view URL] on line 134 PHP message: PHP Warning: mysqli_errno(): Couldn't fetch cmysqli in /home//public_html/core/db/[login to view URL] on line 155" while reading response header I have grant permissions and flush privileges but still not able to connect not really sure what's going on - I want some who is expert in heartbeat, drbd and mysql to look thru this and fix the problem - I will give access only via teamviewer it should only take may be 1 hr if you know what you are doing as this is a very simple task I have setup drbd, heartbeat and mysql so that part is working but connection is what I am having problem with - please advise if you can do this and please stay with in my budget if you cant then please dont bid