Re: [ovirt-users] How to update ovirt on a single-host hosted-engine host
On Thu, Nov 24, 2016 at 8:33 PM, Derek Atkins <derek(a)ihtfp.com> wrote:
Hi,
I've got ovirt running on a single host (with hosted-engine). I just
upgraded the engine from 4.0.4 to 4.0.5. That was pretty easy; I just
put the system into global maintenance mode, then yum update, then
engine-setup, then took the host out of maint mode. Easy peasy.
'took the host out of maint' -> took the engine VM out of maintenance mode:
global maintenance mode means that ovirt-ha-agent (on any hosts) will not
try to check, restart, migrate... the engine VM.
Now, I want to update the host itself. Since it's a single host
system
I know I'll need to shut down all the VMs (because there's no place to
migrate them). This means I'll need to shut down the engine VM, too.
That would imply that I can't use the "Update" feature from the ui,
right?
Yes, correct
So what IS the process to properly update a single-host host? My
guess
is:
* shutdown all the VMs
* go into global maint mode (what IS the difference between global and
local?)
* shutdown the engine/engine VM
* yum update on the host
* restart services (or reboot, I guess)
* bring the system out of maintenance mode
shutdown or hibernate all the other VMs.
set global maintenance mode to avoid ovirt-ha-agent trying to restart the
engine vm
shutdown the engine VM (from the host CLI) with hosted-engine --vm-shutdown
yum update
restart services
bring the system out of global maintenance mode: in a couple of minutes the
HA agent should restart the engine VM
Am I missing a step? Do I need to run hosted-engine --deploy again
similar to how I needed to run "engine-setup" on the engine? Or is
there something else I need to run?
Thanks,
-derek
--
Derek Atkins 617-623-3745
derek(a)ihtfp.com www.ihtfp.com
Computer and Internet Security Consultant
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