On 8/23/13 11:23 AM, Greg Stark wrote:
This doesn't generate a unique id. You could back up a standby and restore it 
and point it at the original master and end up with two standbies with the same 
id.

If you want to enforce something unique throughout a cluster, I think we're 
stuck with having the cluster communicate IDs across an entire cluster. AFAIK 
that's how both Slony and londiste 3 do it.

I think it's also noteworthy that Slony and londiste both rely on the user 
specifying node identifiers. They don't try to be magic about it. I think 
there's 2 advantages there:

- Code is simpler
- Users can choose a naming schema that makes sense for them
--
Jim C. Nasby, Data Architect                       j...@nasby.net
512.569.9461 (cell)                         http://jim.nasby.net


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