Suggestions for multiserver setup
I have a question which I have thought about for a while.
I'm about to setup multiserver environment (~4 servers).
I have thought about this setup:
1- web, db, mail, ns1
2- web, db, mail, ns2
3- web, db, mail, (maybe ns3)
4- web, db, mail, (maybe ns4)
1- web, db
2- web, db
3- mail, ns1
4- mail, ns2
What would you suggest? And why?
Also I would like the ISPC panel to be redundant. So that we can still access ISPC panel even though the (primary) ISPC panel server is down.
Or isn't this neccessary? Argue why not :-)
How would you do this?
1- setup master-master MySQL cluster?
2- or simply import/export/rsync the ISPC database to another server?
3- other ideas?
A million thanks :-)