Sujet: Re: cyrus replication : master to replica and replica to master Date: Thu, 22 Oct 2009 15:20:09 +1100me
> Well - it's theoretically possible. But I don't know anyone who's done > it, and it has the potential to get ugly if you're delivering to the > same mailboxes at each end. There's nothing I can see that would > actually stop it working. >I think Bron failed to put sufficiently large warning signs here :) >The difference between "in theory this would work" and the practice of >actually doing it are huge. Basically it works only if you are 100% sure >that only one side is ever being accessed at a time. eg. IMAP/POP/LMTP/etc. >If somehow you get an LTMP deliver to different ends, then one side will end >up overwriting the other. >In other words, DON'T DO THIS. >Rob Thanks rob i'm very surprised that there is not really official point from cyrus-imap dev team against using cyrus in cluster active/active mode Since serverals years the messaging service become very important and the clustering system is the right way to provide a real fail over system After googlize i had read that the only best method is to using drbd but there no really wikis and documentations about implementing this kind of structure. I would like to restart this topic and discuss. David
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