Re: Advice on backing up a 2 master system
If clients are writing to both masters, you are asking for trouble. If they happen to insert the same UNIQUE key (esp, AUTO_INCREMENT) on both Masters, replication will hang.
I advise all clients write to only one master in a Dual-Master setup. You need to devise some easy way to easily change all clients to point to the other Master when there is a failover. (Load balancer, VIP, CNAME, environment variable, etc.)
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June 19, 2012 10:38PM
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