Hello, AFAIK it is because of recreation of all openflow rules in ovs - that is at least on my infra where we're using vxlan tunnels with l2population mechanism. I would be happy if there will be any solution to not recreate all tunnels when agent is restarted. -- Best regards / Pozdrawiam Sławek Kapłoński slawek(a)kaplonski.pl On Thu, Apr 30, 2015 at 03:49:24PM +0700, Chris wrote: > Hello, > > > > We made some changes on our compute nodes in the > "/etc/neutron/neutron.conf". For example qpid_hostname. But nothing what > effects the network infrastructure in the compute node. > > To apply the changes I think we need to restart the > "neutron-openvswitch-agent" service. > > > > By restarting this service the VM gets disconnected for around one ping, the > reason is the restart causes recreation of the int-br-bond0 and phy-br-bond0 > interfaces: > > ovs-vsctl: ovs|00001|vsctl|INFO|Called as /usr/bin/ovs-vsctl --timeout=10 -- > --may-exist add-br br-int > > ovs-vsctl: ovs|00001|vsctl|INFO|Called as /usr/bin/ovs-vsctl --timeout=10 -- > set-fail-mode br-int secure > > ovs-vsctl: ovs|00001|vsctl|INFO|Called as /usr/bin/ovs-vsctl --timeout=10 -- > --if-exists del-port br-int patch-tun > > ovs-vsctl: ovs|00001|vsctl|INFO|Called as /usr/bin/ovs-vsctl --timeout=10 -- > --if-exists del-port br-int int-br-bond0 > > kernel: [73873.047999] device int-br-bond0 left promiscuous mode > > ovs-vsctl: ovs|00001|vsctl|INFO|Called as /usr/bin/ovs-vsctl --timeout=10 -- > --if-exists del-port br-bond0 phy-br-bond0 > > kernel: [73873.086241] device phy-br-bond0 left promiscuous mode > > ovs-vsctl: ovs|00001|vsctl|INFO|Called as /usr/bin/ovs-vsctl --timeout=10 -- > --may-exist add-port br-int int-br-bond0 > > kernel: [73873.287466] device int-br-bond0 entered promiscuous mode > > ovs-vsctl: ovs|00001|vsctl|INFO|Called as /usr/bin/ovs-vsctl --timeout=10 -- > --may-exist add-port br-bond0 phy-br-bond0 > > > > Is there a way to apply this changes without loose pings? > > > > Cheers > > Chris > > _______________________________________________ > Mailing list: http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack > Post to : openstack(a)lists.openstack.org > Unsubscribe : http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack _______________________________________________ Mailing list: http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack Post to : openstack(a)lists.openstack.org Unsubscribe : http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack