I’m a bit proud of myself on this one… I setup a simple, but clean and configurable, MySQL Master/Slave Replication Monitoring PHP Script:
http://code.google.com/p/php-mysql-master-slave-replication-monitor/ (docs)
It’s Open Source and free, I welcome comments, suggestions, and questions.
I think this will be quite useful for anyone who is setting up a pair of MySQL servers as master/slave and want to be sure their replication works as it should.