Re: run pg_rewind on an uncleanly shut down cluster.

From: Bruce Momjian <bruce(at)momjian(dot)us>
To: Oleksii Kliukin <alexk(at)hintbits(dot)com>
Cc: pgsql-hackers(at)postgresql(dot)org
Subject: Re: run pg_rewind on an uncleanly shut down cluster.
Date: 2015-10-05 16:04:03
Message-ID: 20151005160403.GC6797@momjian.us
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On Mon, Oct 5, 2015 at 05:41:07PM +0200, Oleksii Kliukin wrote:
> Hello,
>
> I'm trying to find out how to rewind a cluster that was not shut down
> cleanly, in order to implement pg_rewind support in patroni (an
> automated failover system, https://github.com/zalando/patroni).
>
> At the moment, pg_rewind limits itself to only cleanly shut down
> clusters. This works nicely in the case of a split brain caused by the
> network partitioning. However, it doesn't cover the important case of a
> suddenly crashed master: the crashed cluster cannot be rewound to the
> new master.

Did you read this thread convering the same topic from a few weeks ago?

http://www.postgresql.org/message-id/flat/55FA2537(dot)4070600(at)gmx(dot)net#55FA2537(dot)4070600@gmx.net

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Bruce Momjian <bruce(at)momjian(dot)us> http://momjian.us
EnterpriseDB http://enterprisedb.com

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