from what I understand, MMM is "only" a set of scripts to monitor/take
decisions on the roles of a MySQL cluster. Now, my question is: the
mysql servers that work behind MMM how should be configured? in the
classical mysql master/slave configuration? And if I want to have a
two masters + 1 one slave configuration, how should the 3 my.cnf
configured?
I can't understand this very well from the MMM's installation/
configuration instructions.
TIA
MySQL on the slave server should be configured as a slave of one of
your masters. It would be switched to appropriate master when you'll
start your mmmd_mon process on the monitoring node, but before this
would happen you need to set up working slave on this server manually
(we have mmm_clone script for these purposes which I'm going to
describe in one of my next blog posts - stay tuned).
--
Alexey Kovyrin
http://kovyrin.info/