[Pgpool-general] Trouble with pgpool installation
Paul Giblock
pgiblox at gmail.com
Fri Jun 10 16:52:00 UTC 2011
Any help with this?
Paul
On Thu, Jun 9, 2011 at 9:52 AM, Paul Giblock <pgiblox at gmail.com> wrote:
> Tatsuo,
>
> Thanks for the response.
>
>> pg_last_xlog_receive_location only returns meaningfull result on
>> standby. You should connect directly to standby and issue the
>> query. Even if you do that, I suspect you will get NULL since pgpool
>> log says however.
>>
>>> ERROR: pid 8733: check_replication_time_lag: SELECT
>>> pg_last_xlog_receive_location() returns no data
>>
>> This indicates that your standby server does not act as standby. You
>> should check your standby postgres log.
>
> I just tried pg_last_xlog_receive_location against both databases and
> both of them returned null.
>
> I'm not sure which database is "standby" as I never got to designate a
> "primary". I also have no node status in pgpoolAdmin. I issued a
> statement against pgpool. The statement was handled by server srvh035.
> Even with multiple sessions it seems all statements are sent to
> srvh035. Therefore, I assume srvh016 is currently in "standby". What
> am I looking for in its log? The only thing I see are many calls to:
>
> SELECT pg_last_xlog_receive_location()
>
>> I'm confused. streaming replication mode does not require system
>> db. Why did you do so?
>
> I did that because I was getting those errors regarding "no data", and
> it was a last-ditch effort to get things to work.
>
> Thank you,
> Paul
>
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