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Re: archive command doesnt work

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czw., 8 lut 2024 o 21:10 Laurenz Albe <laurenz.albe@xxxxxxxxxxx> napisał(a):
On Thu, 2024-02-08 at 09:23 +0100, Alpaslan AKDAĞ wrote:
> Thank you for your answer.
>
> I have checked the pg_is_in_recovery() and here are the results
> from primary and hot stand by server.
>
> Primary (old standby ):
> select pg_is_in_recovery();
>  pg_is_in_recovery
> -------------------
>  f
> (1 row)
>
> hot standby(old primary):
> select pg_is_in_recovery();
>  pg_is_in_recovery
> -------------------
>  t
> (1 row)
> and there is also standby.signal file in standby server.
> So it seems that there is nothing wrong.
>
> recovery_min_apply_delay = '2d' are set in warm standby servers.
> Before the switchover we had the same settings but we did not have this problem.

It is becoming increasingly obvious that you never actually performed
a switchover: it seems that you didn't promote the standby.

Either use

  pg_ctl promote -D /path/to/datadir

on the command line or

  SELECT pg_promote();

in SQL.

Yours,
Laurenz Albe



From what you sent:
 
"After switchover since 01.02.2024 hot standby server does not archive wal files. I couldn't find the problem."
Hot standby normally does not archive WAL files. Only the primary server does that unless you have archive_mode set to "always" but your configuration shows that you have it "on" only.

"related postgresql.conf lines:
archive_mode = on "

Cheers,
Mateusz

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