[ZODB-Dev] ZODB + RelStorage FailOver

[Maxence DUNNEWIND]

Hi there,

I'm working on some zope based cluster. The network schema can be found
at http://people.dunnewind.net/maxence/cluster3.png .
All the database part (the red/pink parts) are managed with postgresql
(with replication).
My problem is : I would that each zope server uses mainly one pgsql
server (like on the picture). Anyway, if one of the database server
fails, then I would than zope/zodb/relstorage switch to another database
server, and go back to his server when it will be back.

Any idea to make that with zodb/relstorage ? 
At the moment, the only idea I have is to use an external check/watchdog
service which change the config file and reload zope in case of database
problem.

Best regards, 

Maxence

-- 
Maxence DUNNEWIND
Contact : maxence at dunnewind.net
Site : http://www.dunnewind.net
02 23 20 35 36
06 32 39 39 93
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