On Tue, Nov 24, 2015 at 9:39 AM, Simone Tiraboschi wrote:

Just an addition: your first host will be automatically added to your engine so you don't have to do anything special on that.
hosted-engine on the other side, is using a dedicated storage domain for the engine VM and you cannot use it for other VMs so you still need to add a second storage domain for regular VMs.

Take care that loopback mounting NFS could lead to deadlocks:
https://lwn.net/Articles/595652/
On a single host with the storage on the same host iSCSI seams more reliable.

Take in mind also that in 3.6.0 there is a bug so that you don't actually see your engine vm inside admin portal and also you cannot import it. To be fixed in 3.6.1. See:

https://bugzilla.redhat.com/show_bug.cgi?id=1269768

Also, if you plan to have a single host and you use NFS for storage domains on your single host, you have to manually change

/usr/lib/systemd/system/ovirt-ha-broker.service

so that in the [Unit] section it looks like:

[Unit]

Description=oVirt Hosted Engine High Availability Communications Broker

After=nfs-server.service

otherwise ovirt-ha-broker will fail to start and you have to manually start it after boot and nfs service has come up.

HIH,

Gianluca