11:40 a.m.
On 01/22/2013 02:48 AM, Adrian Gibanel wrote:
I need to migrate an ovirt-engine from an All-In-One (AIO) setup to a
dedicated machine.
So with an old mailing message I've tried to do it but not finished yet, that's
why I ask for help.
I've written a wiki page for the experience so that it becomes a howto which can be
found here:
http://www.ovirt.org/User:Adrian15/oVirt_engine_migration
At the last step the one that finally starts ovirt-engine I've decided to ask help
here just in case I was missing something important.
So here are my doubts.
* Original message that inspired the howto is here:
http://www.mail-archive.com/users@ovirt.org/msg00670.html
* What packages should I delete safely from an AIO setup so that it's just an
hypervisor once I've migrate the ovirt-engine part?
All the ovirt-engine-* packages can be safely deleted, they are not used
by hypervisors.
There are a lot of other packages that can be removed that are
dependencies of ovirt-engine, like httpd, jboss-as and
java-1.7.0-openjdk, and many of the dependencies that they bring, so a
good way to start that cleanup is this:
yum remove 'ovirt-engine-*' 'httpd' 'java-1.7.0-openjdk'
'jboss-as'
That will remove more than 300 packages, as it will transitively include
all the Java packages. If you want to do further cleanups you can take a
look at the "package-cleanup" tool, but be careful or you may end up
with an useless system.
* Is the right way the one I've used to recreate the database?
** Origin
pg_dump -U postgres engine | gzip > engine_db.gz
** Destination
pg_dump -U postgres -s -f tempdb.dump engine
dropdb -U postgres engine
createdb -U postgres engine
zcat engine_db.gz | psql -U postgres engine
The default installation of ovirt-engine creates the "engine" database
owned by the "engine" user, but you are creating it owned by
"postgres"
instead. I think this won't break anything, but if you want to create it
exactly the same you can use the -O option of createdb:
createdb -U postgres -O engine engine
* Let's read: http://www.mail-archive.com/users@ovirt.org/msg00682.html : WRT
certificates, note that hostname should nt change, or SSL will be invalidated.
Did he mean the SSL when you connect via http or https to the manager which currently
doesn't bother me?
Or maybe the SSL to connect to other hosts and communicate to vdsm (sorry if I'm
saying something nonsense. I don't understand oVirt architecture completely) which
bothers me?
* Certificates is: /etc/pki/ovirt-engine ? Something more?
There is some information on how to change certificates here:
http://lists.ovirt.org/pipermail/users/2012-October/004167.html
It is not trivial, so better if you don't change the host name.
* Conf is: /etc/ovirt-engine ? Something more?
Yes, /etc/sysconfig/ovirt-engine, but you should be able to use the one
generated during your new installation. The only difference will be the
database password.
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