Full complete MySQL database replication? Ideas? What do people do?

Question

Currently I have two Linux servers running MySQL, one sitting on a rack right next to me under a 10 Mbit/s upload pipe (main server) and another some couple of miles away on

Answer 1

GoldenGate is a very good solution, but probably as expensive as the MySQL replicator.

It basically tails the journal, and applies changes based on what's committed. They support bi-directional replication (a hard task), and replication between heterogenous systems.

Since they work by processing the journal file, they can do large-scale distributed replication without affecting performance on the source machine(s).

Answer 2

I have never seen dropped statements but there is a bug where network problems could cause relay log corruption. Make sure you dont run mysql without this fix.

Documented in the 5.0.56, 5.1.24, and 6.0.5 changelogs as follows:

   Network timeouts between the master and the slave could result
   in corruption of the relay log.

http://bugs.mysql.com/bug.php?id=26489

Answer 3

We at Percona offer free tools to detect discrepancies between master and server, and to get them back in sync by re-applying minimal changes.

• pt-table-checksum
• pt-table-sync