> > > You can use the built-in streaming replication for what you describe but > if you want unplanned failover it should be the SYNCHRONOUS replication. > > asynchronous replication will work fine for a controlled switchover (stop > the slons, let your 'DR Master' get caught up with streaming replication' > then bring it up as a read-write node and restart the slons). > > However if you have an unplanned failure of your 'master' node the 'slave' > node might be further ahead via slony than your 'dr master' node via async > streaming replication. If this happens and you promote the 'DR master' > then you might have a very bad day. > > > Got it. Thanks Steve for all your help. I could able to fix this by storepath() function and as you said, I have taken care that 'slave' node never pass master events ahead.
--Raghav
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