Symbolic link needed with mysql and PHP?

We have a new CentOS installation using PHP5 and MySQL. We were having an issue getting Cacti running, but the problem appears to boil down to a PHP issue. When attempting to access Cacti via the web, we got this error: FATAL: Cannot connect to MySQL server on 'localhost'. Please make sure you have specified a valid MySQL database name in 'include/config.php' We checked config.php and everything is configured correctly. We then looked at "my.cnf" and saw this line: socket=/var/lib/mysql/mysql.sock Running "netstat -an | grep mysql" says the following: unix 2 [ ACC ] STREAM LISTENING 11035 /var/lib/mysql/mysql.sock However, we have to create a symbolic link in /tmp in order to be able to get to the Cacti config screen: ln -s /var/lib/mysql/mysql.sock mysql.sock Why do we have to do this though? ________________________________ Information in this e-mail may be confidential. It is intended only for the addressee(s) identified above. If you are not the addressee(s), or an employee or agent of the addressee(s), please note that any dissemination, distribution, or copying of this communication is strictly prohibited. If you have received this e-mail in error, please notify the sender of the error.