Monday, 2015-11-02

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sloweHi all, running into an issue with testing OVN via DevStack. 2nd DevStack node (compute only) doesn't seem to be talking to OVN properly (can't run "ovn-nbctl lswitch-list", for example). Suggestions on where to start looking?21:04
arosenslowe:  I think ovn-nbctl is only connecting to localhost21:05
arosenso on the second node you'd need to tell it to connect to the right ip of northd21:06
arosensince only one of thoses runs.21:06
arosentoday.21:06
arosenIf you do: ovs-vsctl show do you see the tunnels between the two nodes/21:06
slowearosen: ovs-vsctl does show a tunnel between the nodes21:06
arosenCool, so I think that's the issue then.21:06
slowearosen: Hmm..OK. I'll keep testing it. Odd thing was that normally you can launch two instances and they'll be spread across the two hosts, but in this case both instances got launched on the first node. That led me to believe that there was an OVN issue w/ the second host.21:08
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slowearosen: I suppose it was just some other weirdness, though. I'll keep testing.21:08
arosengotcha.21:08
arosenslowe:  what does: nova-manage service list say?21:09
slowearosen: Nova reports both hypervisors as up and enabled.21:09
arosenI think ovn-nbctl only queries northd so you'd need to pass in the ip.21:09
arosenk21:09
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russellbslowe: yeah, i wouldn't expect ovn-nbctl to work from the 2nd node by default.  you'd have to pass an additional arg pointing it at the db back on the first host22:00
russellband yeah, generally i'd expect VMs to show up on both, unless nova thinks the 2nd compute host can't run the VMs for some reason (not enough resources or something)22:01
russellbnot sure if the nova-scheduler log includes details about those decisions by default22:01
slowerussellb: Yeah, arosen confirmed the same. Just couldn't figure out why Nova _refused_ to launch any instances on the second node, even when it was showing it up/enabled.22:01
slowerussellb: Rebuilding the environment again to see what happens22:02
russellbok22:02
russellbok22:02
russellbsorry my 1 year old keeps hitting my keyboard :)22:02
sloweNP :-)22:02
arosenrussellb:  do you know off hand if there is any way to secure the connection to ovn from neutron?22:04
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russellbif it happens again, you could try disabling the first compute node (nova service-disable) to force usage of the second22:04
russellband if it fails, dig in the logs ...22:04
arosenit seems like right now that anyone can connect to northd and make changes?22:04
russellbarosen: ovsdb-server supports SSL, but i bet we're missing some knobs to enable it properly on the neutron side22:05
russellbanything with access to whatever management network ovsdb-server is running on, yes22:05
russellbshould look into the SSL support22:05
russellbmaybe it even supports client certs ...22:05
arosenk, i can check into that.22:06
russellbcool22:07
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* mestery notes he's bringing up a multi-node devstack setup with OVN at the moment as well and will report back results22:20
mesteryslowe russellb arosen: ^^^ FYI22:20
sloweThanks mestery22:21
shettyg1slowe: haven't yet come to docker part?22:29
sloweshettyg1: No! Still trying to get OVN+OpenStack working (it's been quite a journey). I do need to catch up with you on the Docker part, though.22:30
shettyg1slowe: I am flying tomorrow. When is your talk? Thursday or Wednesday?22:30
sloweThe overlay demos are Wednesday, 11/4. (The day before the meetup that night.)22:37
sloweshettyg1: Got a few minutes to chat right now? I can call you, if you've got some time.22:37
shettyg1slowe: sure22:37
shettyg1you can call me22:37
sloweOK, gimme a minute and I'll ring you.22:38
openstackgerritAaron Rosen proposed openstack/networking-ovn: Pull out vtep/port_options to helper method  https://review.openstack.org/24101322:38
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openstackgerritAaron Rosen proposed openstack/networking-ovn: Pull out vtep/port_options to helper method  https://review.openstack.org/24101322:43
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openstackgerritAaron Rosen proposed openstack/networking-ovn: Add helper method  _update_port_in_ovn()  https://review.openstack.org/24101522:58
openstackgerritAaron Rosen proposed openstack/networking-ovn: Pull out ovn config options to helper method  https://review.openstack.org/24101323:05
openstackgerritAaron Rosen proposed openstack/networking-ovn: Add helper method  _update_port_in_ovn()  https://review.openstack.org/24101523:05
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openstackgerritAaron Rosen proposed openstack/networking-ovn: Remove duplicate call to _get_allowed_mac_addresses_from_port()  https://review.openstack.org/24102023:16
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openstackgerritAaron Rosen proposed openstack/networking-ovn: Remove unused method _delete_ports()  https://review.openstack.org/24102423:26
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