Re: Two started cluster on the same data directory and port

[Adrian Klaver <adrian.klaver@xxxxxxxxxxx>]

On 11/30/23 05:37, Loles wrote:
> Hi!
>
> I have this situation on a server that is giving me problems.
>
> postgres@hostname:~$ pg_lsclusters
> Ver Cluster  Port Status Owner    Data directory              Log file
> 14  main     5432 online postgres /var/lib/postgresql/14/main 
> /var/log/postgresql/postgresql-14-main.log
> 14  main_old 5432 online postgres /var/lib/postgresql/14/main 
> /var/log/postgresql/postgresql-14-main_old.log
>
> How can I stop, even delete, the main_old cluster?

Assuming you are on  Debian/Ubuntu.

1) sudo pg_ctlcluster stop 14 main_old

    This will stop the server for this session

2) sudo vi  /etc/postgresql/14/main_old/start.conf

    Change auto to manual.
    This will keep the server from restarting on reboot.
    You can still start it using
	 sudo pg_ctlcluster start 14 main_old    	
    Though if you want to do that then:
        vi /etc/postgresql/14/main_old/postgresql.conf
     and change port to something other then 5432.

3) If you have determined you really don't need that server and have all 
the data safely backed up or moved to the other server, then(THIS IS NOT 
REVERSIBLE):

    sudo pg_dropcluster 14 main_old

> Thanks!

--
Adrian Klaver
adrian.klaver@xxxxxxxxxxx