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From: Laurenz Albe <[email protected]>
To: Fabrice Chapuis <[email protected]>
To: Pgsql-admin <[email protected]>
Subject: Re: problem during postgres restore: max_connections = 100 is a lower setting than on the primary server, where its value was 350
Date: Mon, 02 Mar 2026 15:36:30 +0100
Message-ID: <[email protected]> (raw)
In-Reply-To: <CAA5-nLCdhiJW=zEBexw=NeDGirNGdKVWb-TEhRALM6+DCDRs6w@mail.gmail.com>
References: <CAA5-nLCdhiJW=zEBexw=NeDGirNGdKVWb-TEhRALM6+DCDRs6w@mail.gmail.com>

On Mon, 2026-03-02 at 11:27 +0100, Fabrice Chapuis wrote:
> I got this error from restoring a backup on a recovery machine.
> I got error about the max_connections that I changed from 350 to 100.
> in the control file the value is 350
> /usr/pgsql-17/bin/pg_controldata -D /pgdata/pgsql/17/main/ | grep max_conn
> max_connections setting:              350
> That is the value registered from the primary. But the primary is not intended to be connected during this restore.
> primary_conninfo is desactivated.
> 
> Is there a trick to change decrease this value and start the instance.

Why bother?

Leave max_connections at 350.

Yours,
Laurenz Albe

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