[Users] engine-backup --restore

[Alon Bar-Lev]

----- Original Message -----
> From: "Juan Pablo Lorier" <jplorier at gmail.com>
> To: "Yedidyah Bar David" <didi at redhat.com>
> Cc: "users" <users at ovirt.org>
> Sent: Wednesday, February 12, 2014 9:10:43 PM
> Subject: Re: [Users] engine-backup --restore
> 
> Well, too soon to say boodbye.
> Thought I used --change-db-credentials in the restore, the engine seems
> to be unable to connect to the database. I assume that it didn't get the
> new password, so, is there a way to tell the engine about the new password?
> Regards,

/etc/ovirt-engine/engine.conf/10-setup-database.conf or similar.
Look for ENGINE_DB_* variables.

> 
> On 12/02/14 16:03, Yedidyah Bar David wrote:
> > ----- Original Message -----
> >> From: "Juan Pablo Lorier" <jplorier at gmail.com>
> >> To: "Yedidyah Bar David" <didi at redhat.com>
> >> Cc: "Sahina Bose" <sabose at redhat.com>, "users" <users at ovirt.org>
> >> Sent: Wednesday, February 12, 2014 7:55:35 PM
> >> Subject: Re: [Users] Problems accesing the database
> >>
> >> Hi Yedidyah,
> >>
> >> But If I run engine-setup and then engine-backup restore shuldn't it
> >> import the data to the existing db created by engine-setup?
> >> That's shown everywhere so I thought it's a valid way to migrate
> > No.
> >
> > There is a specific case in which this works automatically:
> > All on the same host:
> > 1. engine-setup
> > 2. engine-backup --mode=backup
> > (perhaps do other stuff here)
> > 3. engine-cleanup
> > 4. engine-backup --mode=restore
> >
> > Why does this work? Because 'engine-cleanup', since 3.3, does not drop
> > the database nor user inside postgres. So when restore tries to access
> > this database using this user and password it succeeds.
> >
> > In general, if you do the restore on another machine, and do there
> > 'engine-setup; engine-cleanup' as a quick-postgres-provisioning-tool,
> > you end up almost ready, but not quite - because the password is random,
> > and therefore different between the installations. In principle you could
> > have provided just the password to restore, but we decided that if you
> > need to change the credentials, you should pass all of them (except for
> > defaults).
> >
> > Hope this clarifies,
> 
> 
> 
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