From: | Alex Lai <alai(at)sesda2(dot)com> |
---|---|
To: | Chris Redekop <chris(at)replicon(dot)com> |
Cc: | pgsql-general(at)postgresql(dot)org |
Subject: | Re: Demoting master to slave without an rsync...is it safe? |
Date: | 2011-09-07 12:28:12 |
Message-ID: | 4E67635C.9090900@sesda2.com |
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Thread: | |
Lists: | pgsql-general |
Chris Redekop wrote:
>
>
> I have two questions:
> (1) Did you set recovery_target_timeline='latest' in both master
> and slave?
>
>
> Yes....but it's in recovery.conf so it only really applies to
> whichever server is currently the slave...
>
>
> (2) Did you make any changes after promote the slave to be master?
>
>
> Yes, some....however I'm not sure I've done enough changes to have the
> slave rotate+archive an xlog before bringing the old master back up as
> a slave....I would assume that wouldn't make a difference but it's
> something to test I guess....
Did you set trigger_file in recovery? That is the required step to
switch slave to master. I set my log rotate+archive to 15 minutes.
When I touch fail over file, it mostly like force it to rotate+archive.
--
Best regards,
Alex Lai
OMI SIPS DBA ADNET Systems , Inc.
7515 Mission Drive,
Suite A100 Lanham, MD 20706
301-352-4657 (phone)
301-352-0437 (fax)
alai(at)sesda2(dot)com
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