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PHPBuilder: Using MySQL's Built-In Replication To Maximize Availability

Sep 15, 2000, 13:00 (0 Talkback[s])
(Other stories by Michael Tanoviceanu)

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"Here at Soundbreak we stream out live audio and video 24 hours a day, so it didn't take much convincing to be able to run some testing on MySQL's new replication feature. We discoverd that we could use it to keep an up to date standby database server that could handle all of the queries should the primary fail for any reason. It's not dificult to configure two servers for just such a purpose, and I'll walk through the procedure, as well as a discussion as to how you can use PHP to redirect the queries should the primary server fail."

"MySQL's internal replication is built on a master-slave relationship between two or more servers, with one acting as the master, and any number acting as slaves. I'll walk through configuring two servers as a master slave pair, describing the process as we move through it. I initially performed the procedure outlined below on 3.23.22, and have also tested it on 3.23.23. The MySQL developers recommend that you use the most recent version, and that both the master and slave use the same version while the 3.23 series is still in beta as versions may not be backward compatible. I currently have not yet used this procedure on a live site for that reason, as one of the advantages of having fail-over capabilities is to be able to upgrade one server without interrupting any of the queries."

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