Re: postgres standby won't start

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От Ramalingam, Sankarakumar
Тема Re: postgres standby won't start
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Msg-id C7BCCAFB121E934BA4FE0D9790294D57AD5EF8C7@SPPATLXCHMBX01.servers.global.prv
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Ответ на Re: postgres standby won't start  (Adrian Klaver <adrian.klaver@aklaver.com>)
Ответы Re: postgres standby won't start
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Hi Adrian,
Thanks for your prompt response. I used pg_basebackup to backup my source server. I am starting this exercise on our QA
sideso I can do a dry run before hitting production. Would I be able to restore that backup on my target standby? If
yes,would you guide me to the steps. Thanks a lot for your invaluable suggestions overall to this forum. 



Thanks
Kumar Ramalingam
X6015288


-----Original Message-----
From: Adrian Klaver [mailto:adrian.klaver@aklaver.com]
Sent: Monday, October 05, 2015 7:35 PM
To: Ramalingam, Sankarakumar; pgsql-general@postgresql.org
Subject: Re: [GENERAL] postgres standby won't start

On 10/05/2015 12:35 PM, Ramalingam, Sankarakumar wrote:
> Thanks Adrian.
>
> My primary is doing  fine. Only the standby. I am noticing it after a while..my Bad!!
> Primary setting
> #---------------------------------------------------------------------
> ---------
> # REPLICATION
> #---------------------------------------------------------------------
> ---------
>
> max_wal_senders = 5
> wal_sender_delay = 1s
> wal_keep_segments = 512
> vacuum_defer_cleanup_age = 20
> hot_standby = on
>
> Since I am unable to bring standby up, would the pg_basebackup help me out here for a complete sync? Thanks again.

The problem is that the WAL files got recycled on the primary and are no longer available there, which is why the
standbyis failing. If you where archiving the WAL files somewhere, you could fetch the missing WAL files from there. If
thatis not the case then you will need to rebuild the standby to the current state(more or less) of the primary. The
simplestway is to use pg_backup, but that means starting with either no data directory or an empty one on the standby.
Thedocs page steps you through the procedure. 

>
>
>
> Thanks
> Kumar Ramalingam
> X6015288
>
>



--
Adrian Klaver
adrian.klaver@aklaver.com
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