Re: Lost replication slots after pg_upgrade.

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To: Nikhil Shetty <nikhil.dba04@xxxxxxxxx>
Subject: Re: Lost replication slots after pg_upgrade.
From: Julien Rouhaud <rjuju123@xxxxxxxxx>
Date: Tue, 8 Feb 2022 16:08:43 +0800
Cc: Victor Sudakov <vas@xxxxxxxxxx>, Pgsql-admin <pgsql-admin@xxxxxxxxxxxxxxxxxxxx>, pgsql-admin <pgsql-admin@xxxxxxxxxxxxxx>
In-reply-to: <CAFpL5Vw5O3mzhjS6NuNZSCUH8Jr+=KXVPPZ-+y5--20W6cSFmA@mail.gmail.com>
References: <CAFpL5Vws1tJnO8_CeOBO6e2q5K4Zbe4==redhV1yLSekm1U4TQ@mail.gmail.com> <Yftm6IwtRKg5QB7P@admin.sibptus.ru> <CAFpL5Vx__E4hfvvoCQOmGEtAygowJzto_=sQHUTNbXOpUo1PUQ@mail.gmail.com> <YgHkxM8Ocn4F3zWi@admin.sibptus.ru> <CAFpL5VxJiFdZ=UKAGNEqNo=U3eSDSFx1uabrrst-GJu2z3zqUg@mail.gmail.com> <20220208070404.d2dizlt6nvz2g3og@jrouhaud> <CAFpL5Vw5O3mzhjS6NuNZSCUH8Jr+=KXVPPZ-+y5--20W6cSFmA@mail.gmail.com>

On Tue, Feb 08, 2022 at 01:18:39PM +0530, Nikhil Shetty wrote:
> 
> Thank you for the information. I wanted to understand why the replication
> slot is removed after or during upgrade?

Because pg_upgrade modifies your primary instance in such a way that a standby
can't simply keep replicating from it.

References:
- Lost replication slots after pg_upgrade.
  - From: Nikhil Shetty
- Re: Lost replication slots after pg_upgrade.
  - From: Victor Sudakov
- Re: Lost replication slots after pg_upgrade.
  - From: Nikhil Shetty
- Re: Lost replication slots after pg_upgrade.
  - From: Victor Sudakov
- Re: Lost replication slots after pg_upgrade.
  - From: Nikhil Shetty
- Re: Lost replication slots after pg_upgrade.
  - From: Julien Rouhaud
- Re: Lost replication slots after pg_upgrade.
  - From: Nikhil Shetty

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