No that was the first thing I tried.

I ended up flattening the physical hosts and reinstalling from the OS up.
Then it was simply a case of importing the detached storages domains.

PITA and took a lot longer than anticipated, but at least it's all working again.

On Wed, 1 Apr 2020 at 18:01, Strahil Nikolov <hunter86_bg@yahoo.com> wrote:
On April 1, 2020 7:44:09 AM GMT+03:00, "Maton, Brett" <matonb@ltresources.co.uk> wrote:
>I currently don't have a hosted engine...
>
>I tried the usual command as you suggested, but that just says 'You
>must
>run deploy first'
>
>Basically, I need to remove the power management configuration so that
>it
>doesn't try to validate it during the hosted engine deployment.
>
>On Wed, 1 Apr 2020 at 05:37, Strahil Nikolov <hunter86_bg@yahoo.com>
>wrote:
>
>> On April 1, 2020 6:51:49 AM GMT+03:00, "Maton, Brett" <
>> matonb@ltresources.co.uk> wrote:
>> >So, how would I go about disabling global maintenance when hosted
>> >engine
>> >isn't running?
>> >
>> >I tried editing /var/lib/ovirt-hosted-engine-ha/ha.conf and setting
>> >both
>> >values to False but that didn't help.
>> >
>> >local_maintenance=False
>> >local_maintenance_manual=False
>> >
>> >
>> >
>> >On Tue, 31 Mar 2020 at 23:01, Maton, Brett
><matonb@ltresources.co.uk>
>> >wrote:
>> >
>> >> Oooh probably...
>> >>
>> >> I'll give that a try in the morning, cheers for the tip!
>> >>
>> >> On Tue, 31 Mar 2020, 21:23 , <eevans@digitaldatatechs.com> wrote:
>> >>
>> >>> Did you put the ovirt host into global maintenance mode? That may
>be
>> >the
>> >>> issue.
>> >>>
>> >>>
>> >>>
>> >>> Eric Evans
>> >>>
>> >>> Digital Data Services LLC.
>> >>>
>> >>> 304.660.9080
>> >>>
>> >>>
>> >>>
>> >>> *From:* Maton, Brett <matonb@ltresources.co.uk>
>> >>> *Sent:* Tuesday, March 31, 2020 2:35 PM
>> >>> *To:* Ovirt Users <users@ovirt.org>
>> >>> *Subject:* [ovirt-users] Failing to redeploy self hosted engine
>> >>>
>> >>>
>> >>>
>> >>> I keep running into this error when I try to (re)deploy
>self-hosted
>> >>> engine.
>> >>>
>> >>>
>> >>>
>> >>>
>> >>>
>> >>> # ovirt-hosted-engine-cleanup
>> >>>
>> >>> # hosted-engine --deploy
>> >>>
>> >>> ...
>> >>>
>> >>> ...
>> >>>
>> >>> [ INFO  ] TASK [ovirt.hosted_engine_setup : Fail with error
>> >description]
>> >>>
>> >>> [ ERROR ] fatal: [localhost]: FAILED! => {"changed": false,
>"msg":
>> >"The
>> >>> host has been set in non_operational status, deployment errors:
>> >code
>> >>> 9000: Failed to verify Power Management configuration for Host
>> >>> physhost01.example.com,   fix accordingly and re-deploy."}
>> >>>
>> >>>
>> >>>
>> >>> I shut down all of the VM's and detached the storage before
>cleaning
>> >up
>> >>> and trying to re-deploy the hosted engine, first time I've run
>into
>> >this
>> >>> particular problem.
>> >>>
>> >>>
>> >>>
>> >>> Any help appreciated
>> >>>
>> >>>
>> >>>
>> >>> Brett
>> >>>
>> >>>
>> >>>
>>
>> The command  ia pushed  to the OVFs in the shared storage ,  which
>the
>> ovirt-ha-agent is reading.
>>
>> hosted-engine --set-maintenance --mode=global
>>
>> Modes can be : global (all nodes),  local (this node only), none
>(remove
>> maintenance).
>>
>> Best Regards,
>> Strrahil Nikolov
>>

For me it seems that you need  to do a  cleanup and redeploy.

Best Regards,
Strahil Nikolov