Quoting Machiel Richards <machi...@rdc.co.za>:
The question I have however is how do you fail over to the slave
server in the event that the master server is unavailable and then how
to revert back to the master server once the server is available again.
Hi,
to fail over to the slave, you dont need to do anything (except be
sure that replication is off). That is, tell your apps etc to use the
slave IP/hostname, change the slave server IP to that of the master or
update DNS so that all connections are made to the slave instead of
the master.
To reinstate the master after a failover, you must copy your live
database (now on slave) to the master and reinitiate replication
pretty much as you did when replication was initially setup. Copying
the live DB can be achieved via restoring a backup (from the live
slave) or you could look at Maakit which can analyse table differences
and copy only changed data (useful for very large DBs, Ive not
personally used it tho).
Thats about it I think, unless anyone wants to correct me on that...
thanks Andy.
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