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replication - master and slave at one time - possible?
This post is a continuation of "central database on one server,
"dislocated" servers in many cities", which I posted on 26.10.04.
Is such scenario possible - there are two (or more) OpenLDAP servers,
and each of them is both master and slave to each other?
I have that situation:
Employees travel a lot between branches with their laptops.
And so there are:
1) central user/password database in LDAP (master),
2) many branch offices - divided by slow WAN - and thus each also have
the same central user database in LDAP (slaves get data from master in
But as users would like to change their passwords, they would have to
change their passwords in their respective branch offices (to avoid slow
And because of that, there is a switch of roles, slave becomes master,
and master becomes slave:
a) user updates password in a branch office (over LAN) - now branch
office is a master
b) password is transferred to the central user/password database (over
WAN) - central database is slave now
c) password is transferred to all branch offices (over WAN) - they were
slaves, and still are.
Wouldn't this "each server is a master and slave at one time" cause some
terrible loops and never-ending changes?
Is it a good solution? Or what should I use in this situation?