On Tue, Oct 3, 2017 at 4:05 PM, Marcin Mirecki <mmirecki@redhat.com> wrote:

Hello Gianluca,

Please check on the engine what hosts are registered on ovn-north:
#ovn-sbctl show

For each registered host you should see something like:
Chassis "69b6b2a6-5afb-4908-8d66-c648cbe09ba8"
hostname: "f43"
Encap geneve
ip: "192.168.120.43"
....

I would assume you have some unwanted entries there (10.4.168.74)

To get rid of this please use:
# ovn-sbctl chassis-del <chassis id> // for example: ovn-sbctl chassis-del 69b6b2a6-5afb-4908-8d66-c648cbe09ba8

Please let me know if this helps.

Note also that you would have to runplug/plug any vnics on any vm's you have on those two hosts.

Marcin

Hello Marcin.

it worked like a charm.. ;-)

The "show" option of the command returned 4 chassis:

- 3 are of running oVirt hosts that I notice have been automatically updated after the "vdsm-tool ovn-config ..." command run on them (their dns name has remained the same)

- the leftover one

After removing it with the suggested command it disappeared both from engine (ovn-sbctl show) and from hosts (ovs-vsctl show)

I'm going to power on some VMs with their nics on OVN and see if all is ok.

Thank you very much.

Gianluca