Re: Frequent failover

From: Rajesh Kumar <rajeshkumar(dot)dba09(at)gmail(dot)com>
To: Ron <ronljohnsonjr(at)gmail(dot)com>
Cc: Pgsql-admin <pgsql-admin(at)lists(dot)postgresql(dot)org>
Subject: Re: Frequent failover
Date: 2023-11-07 13:31:13
Message-ID: CAJk5AtaHK2w8w5aQ1AOB7S5cfnAxWZMNrqvcCWKc1RhRXEJ7EA@mail.gmail.com
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I saw only the follow in postgres logs.

57P01 terminating due to administrative command
57P03 database shutting down
..then "received fast shutdown request",,,,postmaster

On Tue, 7 Nov 2023, 18:39 Ron, <ronljohnsonjr(at)gmail(dot)com> wrote:

> Have you scoured the Patroni and Postgresql logs?
>
> Have you increased the logging level?
>
> On 11/6/23 23:44, Rajesh Kumar wrote:
>
> Is there a way to narrow down the cause of failover? Yesterday itself
> failover happened 7 times.
>
> On Mon, 6 Nov, 2023, 1:34 PM kaido vaikla, <kaido(dot)vaikla(at)gmail(dot)com> wrote:
>
>> Hi
>> First of all, read a logs.
>> $PGDATA/log
>> #journalctl -u patroni
>> I had once failover flapping, because of master heavy load, caused by
>> apliccation change. So, find a pattern.
>>
>> If physical replication, after failover you don't need run a vacuum
>> manually if autovacuum is enabled.
>>
>> br
>> Kaido
>>
>> On Mon, 6 Nov 2023 at 04:53, Rajesh Kumar <rajeshkumar(dot)dba09(at)gmail(dot)com>
>> wrote:
>>
>>> Hi,
>>>
>>> When I issue command patronictl history, I can see frequent failover.
>>> Like atleast weekly once.
>>>
>>> Every time this happened we have to do vacuum analyse for all dba.
>>>
>>> So, I need assistance in how to avoid frequent failovers and what is the
>>> solution for vacuum part we r doing..
>>>
>>
> --
> Born in Arizona, moved to Babylonia.
>

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