[Pgcluster-general] Failover of PGReplicate

"Tomás A. Rossi" tomas at mecon.gov.ar
Mon Jan 8 18:19:56 UTC 2007


I've done some experiments (and made failover work, at least for a 
while). It seems that when the "primary" replicator restores (i.e. the 
situation Josef described), it doesn't get active again till the 
"secondary" goes down :)

Now I understand Mitanis answer... the "secondary" becomes master and 
the "primary" becomes a slave (when restored), and this only changes if 
the current master goes down. So, there's no primary/secondary/... 
scheme, only a single current replicator and N idle replicators waiting 
to be useful is master falls.

Regards,
--
Tom;

Tomás A. Rossi escribió:
> Sorry, as I see it, the question hasn't been answered. He asked if the 
> "secondary" node should detect that the "primary" is up again, and 
> then restore the original behavior (i.e. root replication server 
> getting active again in the whole replication schema).
>
> Regards,
> --
> Tom;
>
> a.mitani at sra-europe.com escribió:
>> Hi,
>>
>> The replication server is used for queueing queries.
>> Therefore, all cluster db must connect same replication server.
>>
>> Replication server has not primary / secondary order.
>> It has just active / stand-by mode.
>>
>> Regards,
>> -------------------
>> At.Mitani
>>
>>   
>>> Lets say I have 2 nodes, each running PGReplicate and ClusterDB. The node
>>> running the primary PGReplicate fails and the ClusterDB on the second node
>>> automatically fails over the PGReplicate of the first node. However, when
>>> I restart node1, the ClusterDB of node2 seems to remain connected to
>>> PGreplicate of node2, and thus any changes done on node 2 are no longer
>>> reflected on node1, and viceversa.
>>>
>>> Is ClusterDB supposed to realise that the primary replicator has been
>>> restored so that all clusterDBs access the same replicator?
>>>
>>> regards,
>>> Josef
>>>
>>> _______________________________________________
>>> Pgcluster-general mailing list
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>>> http://pgfoundry.org/mailman/listinfo/pgcluster-general
>>>
>>>     
>>
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>
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