Re: Warm-Backup configuration question

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От Kenji Morishige
Тема Re: Warm-Backup configuration question
Дата
Msg-id 20070824220522.GA9696@juniper.net
обсуждение исходный текст
Ответ на Re: Warm-Backup configuration question  ("Mikko Partio" <mpartio@gmail.com>)
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Hmm. I recently installed 8.2.4 out of ports (FreeBSD) and didn't see that file
in contrib.  I'd like to take a look at it.
Kenji

On Fri, Aug 24, 2007 at 07:18:12AM +0300, Mikko Partio wrote:
>
>
> On 8/24/07, Kenji Morishige <kenjim@juniper.net> wrote:
>
>     I've got 2 identical servers configured exactly the same way, except for
>     some
>     minor differences for the WAL logging directories.  I have both machines
>     set up
>     as a NFS server and client, so that the WAL archive gets written out to the
>     local filesystem of the backup machine depending on which role the machine
>     is
>     currently configured for.
>
>     I've been able to get the backup server syncronized by using the
>     recover.conf
>     file as described in the documenation, but I can't seem to write a generic
>     shell
>     script that will keep the warm-backup in a continously syncronizing
>     mode.  It
>     always stops and renames the recover.conf to recover.done.
>
>     I've tried to write an alternate restore command as follows:
>
>     #!/usr/local/bin/bash
>     if [ -e /export/raid/pgsql/recovery.stop ]; then
>       exit 1
>     fi
>     if [ -e $1 ]; then
>       `/bin/cp $1 $2`
>     fi
>     sleep 5
>     exit 0
>
>     The documenation says that it should return 0 only if it is
>     successfull.  My
>     understanding is that the recovery script should continuously try to copy
>     the
>     archived data to the WAL directory so that the WARM-BACKUP server can
>     syncronize.  I'd like to have the WARM-BACKUP always be only a few minutes
>     behind in syncronization from the PRIMARY without human intervention. I can
>     write a cronjob to clean out the WAL archive directory accordingly.
>
>     I would be extremely gratefull for any assistance from anyone with a
>     similar
>     configuration.  I must be confused by how the restore_command is supposed
>     to
>     work.
>
>
>
>
> Why don't you just use pg_standby from contrib.
>
> Regards
>
> MP

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