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MySQL Replication Deadlock Recovery

Current Version
1.0
Last Release Date
2012-02-06
License
BSD
Hits
72672
Files:
FileDescription
MySQL-Replication-DeadLock-Recovery.shMySQL Replication Deadlock Recovery Plugin
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A shell script (/bin/sh) that connects to a specified MySQL slave database, check the replication status for Deadlock errors (Error 'Deadlock found when trying to get lock: try restarting transaction') + Automatically recover from the state by performing "SLAVE STOP; SLAVE START;"

Required parameters: host, user, password.
If no Deadlock is detected, "OK" is returned
O/w, a message is printed and Warning state is returned.

Suggestions are welcome,
Moshe Kaplan
The best practice to handle deadlocks (after eliminating them from the code) is recovering from them.
Unfortunately, MySQL Replication does not recover automatically from these cases.
Therefore, we decided to implement this Nagios plugin. The plugin detects the deadlock and recover from it by restart the slave ("STOP SLAVE; START SLAVE;").

Fast, Simple and very effective.
Reviews (1)
MySQL mysqld_slave-skip-errors option [1] is a better solution.

[1] http://dev.mysql.com/doc/refman/5.5/en/replication-options-slave.html#option_mysqld_slave-skip-errors