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Displaying posts with tag: mysqlhotcopy (reset)

A backup today saves you tomorrow
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Whether you’re working with MySQL, MySQL Cluster, or any other RDBMS, every database with a requirement for persistent data should always have a backup. As a Production DBA you’re the insurance policy to safeguard the data. Bad things do happen. Backups are your safety net to ensure you always have a way to recover should the worst happen and the database becomes irreparable.

There are many ways to produce a consistent backup of MySQL, I have listed a few of the options available below; Remember backups are your safety net, failing to retrieve a consistent backup when you need it most can be a very career limiting move, so no matter what backup …

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Subtle mysqlhotcopy bug fix finally accepted!
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I’m happy to report that my patch for a potentially nasty bug in the mysqlhotcopy script has been accepted into the mysql codebase. It’s a great feeling to finally contribute something, however small, back to the mysql community.

If you have a master/slave environment with multiple slaves, and you do periodic backups of your system on the slave with mysqlhotcopy, the –record_log_pos parameter will pull the wrong co-ordinates from the master and cause you to restore new copies of your database that are potentially corrupt.
An example failure scenario can be found here.

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