Hello Gianluca,

Can you please check the ovn north db log.
This is placed in /var/log/openvswitch/ovsdb-server-nb.log
Please check if the logs has any new entries when you try to connect and when you issue the 'ovn-nbctl set-connection ptcp:6641' command.
If the connection attempt is getting through, pvs db should print an error to the log.

Please also try restarting the ovn-northd service.

Do the ovn-controllers connect to the south-db?
You can verify this by looking at /var/log/openvswitch/ovn-controller.log on the ovn-controller host (please look for entries saying "... <north ip>:6642 connected")

Marcin



On Fri, Apr 21, 2017 at 1:09 PM, Gianluca Cecchi <gianluca.cecchi@gmail.com> wrote:
On Thu, Apr 20, 2017 at 6:54 PM, Gianluca Cecchi <gianluca.cecchi@gmail.com> wrote:
Hello,
I installed some months ago a test setup in 4.1.0 with ovn.
Now after updating engine and host to 4.1.1 it seems the services are up but it doesn't work.
If I run a VM with a network device in OVN external provider, it cant' boot and I get this in engine.log:


[snip] 

At the page

I see this note about ports:

"
Since OVS 2.7, OVN central must be configured to listen to requests on appropriate ports:

ovn-sbctl set-connection ptcp:6642
ovn-nbctl set-connection ptcp:6641
"

and in my case I indeed passed from 2.6.90 to 2.7.0...

Do I need to run these two commands?
Or any other configuration settings?

Thanks in advance,
Gianluca

I confirm that after running these two commands all work ok again and I'm able to start a VM with a vnic provided by the OVN provider

[root@ractorshe ~]# ovn-sbctl set-connection ptcp:6642
[root@ractorshe ~]# ovn-nbctl set-connection ptcp:6641
[root@ractorshe ~]# 


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--

MARCIN mIRECKI

Red Hat