Create Opsview DB MySQL query monitors

[gene1wood]

Currently we don't monitor the content of the mysql servers and that we can query that content. Should be easy to do.

[gene1wood]

Sheeri has some existing checks we could employ

MySQL - checks that MySQL is running

MySQL Config Diffs - checks that the running MySQL config is the same as /etc/my.cnf. Useful to make sure that if a machine restarts, the config will be the same.

MySQL DB uptime - useful to catch if MySQL is restarted and Nagios doesn't catch when MySQL is actually down. We check to see if MySQL was restarted in the previous 30 minutes.

MySQL Replication - useful to check replication lag (you already have this)

MySQL Table Checksum - after pt-table-checksum is run on the master (we have scripts for this in puppet), the tables on the slaves are checked to ensure that the data on the slave is in sync with the data on the master.