Re: run pg_rewind on an uncleanly shut down cluster.

On 05 Oct 2015, at 18:04, Bruce Momjian <bruce@momjian.us> wrote:

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/55FA2537.4070600@gmx.net#55FA2537.4070600@gmx.net