how does cyrus replication failover work?

Michael Menge michael.menge at
Sun Feb 28 14:31:46 EST 2010


Quoting Thomas Vogt <tv at>:

> Hi
> I've to move a large cyrus entity from one facility to another with no
> or at least a little downtime.
> I thought I setup a second cyrus entity on my new data center and use
> cyrus replication to transfer all data to this new cyrus slave. After
> all mails are copied, the slave will become the primary backend server
> for a couple of hours. At this point I'll transfer my cyrus master to
> the new location (physical).
> After everything is done, how do i copy all new mails from the slave
> back to my master who was offline for a couple of hours?
Short answer: as before.
Long answer: at the time you make the slave the primary backend, you  
configure cyrus to ceplicate back to the old server. Cyrus will log  
all actions and will catch up when the old server is back online.

M.Menge                                Tel.: (49) 7071/29-70316
Universität Tübingen                   Fax.: (49) 7071/29-5912
Zentrum für Datenverarbeitung          mail:  
michael.menge at
Wächterstraße 76
72074 Tübingen
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