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From: Laurenz Albe <[email protected]>
To: Nikhil Shetty <[email protected]>
To: Pgsql-admin <[email protected]>
Subject: Re: Cross OS version streaming replication
Date: Wed, 03 Dec 2025 11:11:54 +0100
Message-ID: <[email protected]> (raw)
In-Reply-To: <CAFpL5Vy++t2iuuKnOrJO6ukR-sqx5PEpbNdLM_CEj4COrD-LzA@mail.gmail.com>
References: <CAFpL5Vy++t2iuuKnOrJO6ukR-sqx5PEpbNdLM_CEj4COrD-LzA@mail.gmail.com>

On Wed, 2025-12-03 at 14:24 +0530, Nikhil Shetty wrote:
> For upgrading the OS from CentOS7 to RHEL8, I plan to create replicas on RHEL8
> and then perform a database switchover. After switchover, I will rebuild the
> indexes affected by glibc change in REHL8. Is this a good option to perform OS
> upgrades with minimum downtime ?

Yes.  Two remarks:

- Logical replication might be faster, but it way more complicated.

> Postgres version: 15.12

- I'd update to 15.15; you should always run the latest minor release to avoid bugs.

Yours,
Laurenz Albe

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