On Tue, Mar 14, 2017 at 12:12 PM, Marcin Kruk <askifyouneed@gmail.com> wrote:
> What is the difference between:

There are two different notions of host maintenance:

1. in the engine, meaning the engine will migrate away VMs from
this host, not start new ones on it, etc. This applies to all
hosts, not just hosted-engine ones

2. in ovirt-hosted-engine-ha, the high availability daemons.
Here it means similar things, but applies only to the hosted
engine vm, and is maintained in the HE shared storage (not in
the engine db).

> host CLI command:  hosted-engine --vm-maintenance --mode=local

This one does (2.).

> and
> RHVEM gui click action:  Hosts -> <hostname> -> Maintenance?

In the past, this did only (1.), but now it does both.

See also:

https://www.ovirt.org/develop/release-management/features/engine/self-hosted-engine-maintenance-flows/
https://bugzilla.redhat.com/show_bug.cgi?id=1047649
https://bugzilla.redhat.com/show_bug.cgi?id=1277646

Best,
--
Didi