Re: buster upgraded postgresql

[mick crane <mick.crane@gmail.com>]

On 2018-11-11 10:00, Georgi Naplatanov wrote:
> On 11/11/18 11:52 AM, mick crane wrote:
> > hello
> >
> > this last upgrade buster upgraded postgresql-10 to 11
> > I'm not sure what uses postgresql.
> > during upgrade think there was a message about pg_upgradecluster or I
> > may have read that in manpage.
> >
> > :~# ps -ef | grep postgre
> > postgres   599     1  0 09:36 ?        00:00:00
> > /usr/lib/postgresql/10/bin/postgres -D /var/lib/postgresql/10/main -c
> > config_file=/etc/postgresql/10/main/postgresql.conf
> > postgres   600     1  0 09:36 ?        00:00:00
> > /usr/lib/postgresql/11/bin/postgres -D /var/lib/postgresql/11/main -c
> > config_file=/etc/postgresql/11/main/postgresql.conf
> >
> > shows postgresql-10 and -11 both running after reboot ( I thought 
> > reboot
> > might dump 10 if not needed )
> >
> > should I do "pg_upgradecluster" ?
> > how to find out if 10 is needed and if not needed stop it ?
> >
> > please bear in mind I don't know what I'm doing.
> >
> > mick
>
> Hi Mick,
>
> I think that you should the following:
>
>  - drop existing cluster of PostgreSQL 11
>  - upgrade existing PostgreSQL 10 cluster to 11
>  - drop existing PostgreSQL 10
>  - remove PostgreSQL 10 packages
>
> You have to use commands:
>
> pg_dropcluster
> and
> pg_upgradecluster
>
> HTH
>
> Kind regards
> Georgi

Why do I get the feeling I'm going to break something ?

with "pg_ctlcluster" assume cluster-version is "11" and action is "stop"
but how to find out what is this "cluster-name" for pg_ctlcluster, 
pg_dropcluster and pg_upgradecluster ?

"pg_dropcluster [--stop] cluster-version cluster-name"

"pg_upgradecluster oldversion name [newdatadir]" ?


mick









--
Key ID    4BFEBB31