[pgpool-general: 1603] Re: Failover in raw mode

[Бородин Владимир]

Thanks for reply. Here [1] I found such information:

"Failover can be performed in raw mode if multiple servers are defined. pgpool-II usually accesses the backend specified by backend_hostname0 during normal operation. If the backend_hostname0 fails for some reason, pgpool-II tries to access the backend specified by backend_hostname1. If that fails, pgpool-II tries the backend_hostname2, 3 and so on."

And I want to see the described above behavior. Could you give an example of what should I write to failover_command in that case?

[1] http://pgpool.projects.pgfoundry.org/pgpool-II/doc/pgpool-en.html

11.04.2013, в 17:51, Tatsuo Ishii <ishii at postgresql.org> написал(а):

> You need to set failover_command. Yours is empty, so nothing will
> happen.
> --
> Tatsuo Ishii
> SRA OSS, Inc. Japan
> English: http://www.sraoss.co.jp/index_en.php
> Japanese: http://www.sraoss.co.jp
> 
>> ping. Can anybody help?
>> 
>> 09.04.2013, в 15:24, Бородин Владимир <root at simply.name> написал(а):
>> 
>>> Hi all.
>>> 
>>> I've read much information about failover in raw mode but I haven't found the solution yet.
>>> 
>>> I have 3 PostgreSQL nodes running in streaming replication mode - loadtest01g.domain.com (master), loadtest02g.domain.com andloadtest04g.domain.com (two replicas in hot_standby mode). All of them are listening 0.0.0.0:5432. All of them have the line below in pg_hba.conf (that is a disgusting idea but these hosts are for testing):
>>> host    all             all             0.0.0.0/0               trust
>>> I  can connect to any of them with psql and issue select queries.
>>> 
>>> On loadtest01g I have installed pgpool-II-3.2 and taken the sample config with some modifications (backend addresses, debug_level and timeouts). Config - http://simply.name/tmp/pgpool.conf and log - http://simply.name/tmp/pgpool.log.
>>> 
>>> I get the following problem: 
>>> pgpool does not failover to backend1 (loadtest02g) if backend0 (loadtest01g) fails down. According to log it catches the primary failure but doesn't send queries to one of the replicas.
>>> 
>>> The question is what do I do wrong?
>>> 
>>> --
>>> Vladimir
>>> _______________________________________________
>>> pgpool-general mailing list
>>> pgpool-general at pgpool.net
>>> http://www.pgpool.net/mailman/listinfo/pgpool-general
>> 
>> 
>> --
>> Vladimir
>> 
>> 
>> 
>> 


--
Vladimir

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