[Users] Blank web page after database migration
Yedidyah Bar David
didi at redhat.com
Mon Dec 16 12:28:44 UTC 2013
----- Original Message -----
> From: "Itamar Heim" <iheim at redhat.com>
> To: "Rob Abshear" <rabshear at citytwist.net>, users at ovirt.org, "Yedidyah Bar David" <didi at redhat.com>
> Sent: Monday, December 16, 2013 10:18:42 AM
> Subject: Re: [Users] Blank web page after database migration
> On 12/11/2013 06:48 PM, Rob Abshear wrote:
> > I followed the instructions from the following URLs
> > http://www.ovirt.org/User:Adrian15/oVirt_engine_migration
> > http://www.ovirt.org/Backup_engine_db
> > I backed up and restored the certificates and the configuration without
> > any issues. But the DB restore in the first set of instructions did not
> > work for me. So I used the method in the second document to backup and
> > restore the DB.
> > I wasn't able to perform the "Update encrypted password" step in the
> > first document, because that script does not exist. However, further
> > down the document, it states that, "You can avoid this editing by
> > choosing same password at both managers (old one and new one". So I am
> > assuming I am OK there. Not enough information to know that, though.
> > The issue I'm having is that, when I browse into the new controller, the
> > page loads, but it's completely blank. No errors or anything. All the
> > services seem to be running normally on the controller. I feel like I'm
> > close. What am I missing?
> > *NADA Convention & Expo*: January 24-27, 2014 - New Orleans, LA - Booth
> > 5001
> > <http://www.bbb.org/south-east-florida/business-reviews/advertising-agencies/citytwist-in-boca-raton-fl-90033448><http://www.bbb.org/south-east-florida/business-reviews/advertising-agencies/citytwist-in-boca-raton-fl-90033448>
> > _______________________________________________
> > Users mailing list
> > Users at ovirt.org
> > http://lists.ovirt.org/mailman/listinfo/users
I did not follow closely the above links. They might miss some files/settings.
You can try using engine-backup.
On the source machine do:
engine-backup --mode=backup --file=backup1 --log=backup1.log
Copy backup1 to the target machine, then:
1. Create a database. 'engine-backup --help' for help with this, as well as
2. engine-backup --mode=restore --file=backup1 --log=backup1-restore.log
If the created database has different credentials, you'll need to pass also
--change-db-credentials --db-host=HOST --db-user=USER --db-name=NAME --db-password
3. engine-setup. This will do various cleanups and fixes that engine-backup
does not do.
4. It does not set postgresql and websocket-proxy to start on boot, so you'll need
to do that manually (chkconfig or systemctl) if you want that.
As explained before, this was intended to be done only with identical versions on
source and target machines.
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