[ovirt-users] Remote DB: How do you set server_version?

[Yaniv Kaul]

On Wed, May 2, 2018 at 11:26 PM, Jamie Lawrence <jlawrence at squaretrade.com>
wrote:

>
> I've been down this road. Postgres won't lie about its version for you.
> If you want to do this, you have to patch the Ovirt installer[1]. I stopped
> trying to use my PG cluster at some point -  the relationship between the
> installer and the product combined with the overly restrictive requirements
> baked into the installer[2]) makes doing so  an ongoing hassle. So I treat
> Ovirt's PG as an black box; disappointing, considering that we are a very
> heavy PG shop with a lot of expertise and automation I can't use with Ovirt.
>
>
Patches are welcome to improve the way oVirt uses Postgresql, supports
various versions, etc.
Can you give examples for some of the things you'd do differently?

If nothing has changed (my notes are from a few versions ago), everything
> you need to correct is in
>
> /usr/share/ovirt-engine/setup/ovirt_engine_setup/engine_
> common/constants.py
>
> Aside from the version, you'll also have to make the knobs for vacuuming
> match those of your current installation, and I think there was another
> configurable for something else I'm not remembering right now.
>
> Be aware that doing so is accepting an ongoing commitment to monkeying
> with the installer a lot. At one time I thought doing so was the right
> tradeoff, but it turns out I  was wrong.
>

At least we can start with documenting their location and default values -
if that's not the case already, and when/why change them.
An ovirt.org blog entry would be welcome too.
Y.


> -j
>
> [1] Or you could rebuild PG with a fake version. That option was
> unavailable here.
> [2] Not criticizing, just stating a technical fact. How folks apportion
> their QA resources is their business.
>
> > On May 2, 2018, at 12:49 PM, ~Stack~ <i.am.stack at gmail.com> wrote:
> >
> > Greetings,
> >
> > Exploring hosting my engine and ovirt_engine_history db's on my
> > dedicated PostgreSQL server.
> >
> > This is a 9.5 install on a beefy box from the postgresql.org yum repos
> > that I'm using for other SQL needs too. 9.5.12 to be exact. I set up the
> > database just as the documentation says and I'm doing a fresh install of
> > my engine-setup.
> >
> > During the install, right after I give it the details for the remote I
> > get this error:
> > [ ERROR ] Please set:
> >          server_version = 9.5.9
> >         in postgresql.conf on 'None'. Its location is usually
> > /var/lib/pgsql/data , or somewhere under /etc/postgresql* .
> >
> > Huh?
> >
> > Um. OK.
> > $ grep ^server_version postgresql.conf
> > server_version = 9.5.9
> >
> > $ systemctl restart postgresql-9.5.service
> >
> > LOG:  syntax error in file "/var/lib/pgsql/9.5/data/postgresql.conf"
> > line 33, n...n ".9"
> > FATAL:  configuration file "/var/lib/pgsql/9.5/data/postgresql.conf"
> > contains errors
> >
> >
> > Well that didn't work. Let's try something else.
> >
> > $ grep ^server_version postgresql.conf
> > server_version = 9.5.9
> >
> > $ systemctl restart postgresql-9.5.service
> > LOG:  parameter "server_version" cannot be changed
> > FATAL:  configuration file "/var/lib/pgsql/9.5/data/postgresql.conf"
> > contains errors
> >
> > Whelp. That didn't work either. I can't seem to find anything in the
> > oVirt docs on setting this.
> >
> > How am I supposed to do this?
> >
> > Thanks!
> > ~Stack~
> >
> > _______________________________________________
> > Users mailing list
> > Users at ovirt.org
> > http://lists.ovirt.org/mailman/listinfo/users
>
> _______________________________________________
> Users mailing list
> Users at ovirt.org
> http://lists.ovirt.org/mailman/listinfo/users
>
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.ovirt.org/pipermail/users/attachments/20180503/9c5abf6f/attachment.html>