Message-ID: <9175f85da7de964578bf1d21e8974eeb9888ed78.camel@cybertec.at>
Subject: Re: How to replicate 2 nodes parallel
From: Laurenz Albe <laurenz.albe@cybertec.at>
To: Suraj Sawant <suraj.sawant@shreeyansh.com>,
	pgsql-admin@lists.postgresql.org
Date: Mon, 17 May 2021 09:13:49 +0200
In-Reply-To: <81c859ff-3ff5-4525-9fc9-b2394a8e803a@email.android.com>
References: <81c859ff-3ff5-4525-9fc9-b2394a8e803a@email.android.com>
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On Sun, 2021-05-16 at 01:02 +0530, Suraj Sawant wrote:
> I'm using PostgreSQL 12.5, for HA setup I'm using 3 poatgresql nodes.
> 
> For that I need to take 'pg_basebackup' on two nodes simultaneously from my Master node.
> 
> Is there any option available to take 'pg_basebacup' parallel and then make it in A-B-C format
> i.e. A -> Master
>       B -> Slave
>       C -> DR.

Since "pg_basebackup" uses the non-exclusive backup method, you can run two
such backups concurrently.

However, there is no way to have it run a backup with several parallel processes
to speed up the procedure.

The high availability setup will require thrid-party software, since PostgreSQL
has no built-in clusterware.

Yours,
Laurenz Albe
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Cybertec | https://www.cybertec-postgresql.com