[ovirt-users] Issue with hosted engine restore.

Tue Nov 14 07:50:00 UTC 2017

On Mon, Nov 13, 2017 at 11:58 PM, Krzysztof Wajda <vajdovski at gmail.com> wrote:
> Hello,
>
> I have to restore Hosted Engine on another host (completely new hardware).
> Based on this
> https://www.ovirt.org/documentation/self-hosted/chap-Backing_up_and_Restoring_an_EL-Based_Self-Hosted_Environment/
> is not clear for me if vm's will be rebooted during synchronization hosts
> with engine ?

They should not be rebooted automatically, but you might need to do
this yourself, see below.

>
> I have 5 hosts + 1 completely fresh. On host1 I have HE and there is no vm's
> on other 4 (host1-4) there are around 400 vm which can't be rebooted. Host5
> for restore HE.

Please provide more details about your backup/restore flow.
What died (storage? hosts? data?), what are you going to restore,
how, etc.

Which hosts are hosted-engine hosts. Do they have running VMs.

We are working on updating the documentation, but it will take some time.

For now, you should assume that the safest way is to pass during restore,
to engine-backup, '--he-remove-storage-vm' and '--he-remove-hosts'. This
will remove from the engine all the hosted-engine hosts and storage. So
when you add the hosts back, you'll have to somehow power off the VMs
there - the engine will refuse to add them with running VMs. If you do
not want to use these options, you should plan carefully and test.