Re: Fully-automatic streaming replication failover when master dies?

From: John R Pierce <pierce(at)hogranch(dot)com>
To: pgsql-general(at)postgresql(dot)org
Subject: Re: Fully-automatic streaming replication failover when master dies?
Date: 2014-01-22 21:54:48
Message-ID: 52E03E28.1000406@hogranch.com
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On 1/22/2014 1:35 PM, Dmitry Koterov wrote:
>
> So does something similar and more-or-less stable exist for PostgrSQL
> too?
>

you'd need to implement that yourself using a cluster management
package, and something like repmgr to handle the transitions.

database failover is extremely tricky stuff. you have to make very very
sure you don't get into a stoned cluster where both nodes THINK they are
master. most well implemented failover clusters make use of hardware
'fencing' to block the presumed-dead former master from coming back
online without manual intervention.

--
john r pierce 37N 122W
somewhere on the middle of the left coast

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