Tuesday, 2016-10-11

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openstackgerritAntoni Segura Puimedon proposed openstack/kuryr-kubernetes: Fix sample config file generation  https://review.openstack.org/38148806:54
apuimedolimao: ping06:57
limaohello apuimedo07:00
apuimedolimao: I'm updating the commit msg of https://review.openstack.org/#/c/384152/107:00
apuimedoI hope you don't mind07:00
limaoapuimedo: sure , please help07:01
openstackgerritAntoni Segura Puimedon proposed openstack/kuryr-libnetwork: requirements: depend on last released kuryr-lib  https://review.openstack.org/38415207:01
apuimedopushed!07:01
apuimedothanks limao07:01
limaoThanks apuimedo, much better commit msg07:02
apuimedo;-)07:02
apuimedothanks07:02
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yedongcan1limao: hi07:14
limaoyedongcan1: hello07:15
yedongcan1limao: Could you please add other core reviewers to review that patch?07:15
limaoyedongcan1: good Idea, thanks, ing07:16
limaoyedongcan1: Done thanks07:17
yedongcan1limao: thanks, other patch's UT depends on this.07:17
limaoyedongcan1: yes, I see I will try to ping vikasc  when he online, thanks07:18
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limaoHi apuimedo: it will be very appreciated if you can help to have a look this patch, https://review.openstack.org/#/c/384262/ , because it will fix the CI of kuryr-lib, thanks08:30
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apuimedolimao: got it. Thanks. I'll check it in a little while08:34
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apuimedovikasc: ping13:34
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limaoping vikasc13:59
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limaohi vikasc, please help to have a look https://review.openstack.org/#/c/384262/ and https://review.openstack.org/384152 when you have time, thanks.14:05
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apuimedoneiljerram: I'm making modifications to the slides on slides.google.com16:34
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mchiappehi channel18:45
mchiappeI've been trying the latest code for using IPVLAN (BTW, I work with Louise - lmdaly)18:46
mchiappebasically we realized that the code for deleting the interface on Libnetwork.Leave can't work the way it is18:47
mchiappethe problem being the fact that the interface can't be found as it's in a different namespace18:48
mchiappeso, basically there are two different possible approaches to the problem:18:48
mchiappe1) move that namespace, retrieve the interface and either delete it there or move to the default namespace and then delete it18:49
mchiappe*move to that namespace18:50
mchiappeit sounds relatively easy, but it's actually a bit challenging at the moment and relies on having the SandboxID providing a reference to the network namespace (will it stay this way forever? Is it a reasonable "leak"?)18:51
mchiappe2) move the interface creation and deletion to endpoint_create/endpoint_delete, which I'm not sure would work but sounds like it could as libnetwork will likely move for us the interface to the default namespace18:54
mchiappeit sounds like it's hard, but could be easy as we might reuse the current deletion logic18:54
mchiappehowever is a major behaviour/design shift18:55
mchiapperegarding the first solution, it would require to store some information, so to keep kuryr stateless (which I think is, right?) we would need to find a way to store certain mappings in neutron (which, might not be strictly related to networking BTW)18:56
apuimedomchiappe: hi18:57
mchiappeI would like to hear a feedback from you as it's a fundamental piece to be sorted to make ipvlan/macvlan work18:57
mchiappeapuimedo: hi :)18:58
mchiappesince you wrote the code I would like to hear especially from you18:58
apuimedo:-)18:58
apuimedowell. I'd check the libnetwork code to see if at endpoint_delete the iface is indeed out of the namespace18:59
mchiappeyeah, that's what we wanted to check, but had no time yet18:59
mchiappeI think we will give it a try tomorrow19:00
apuimedoif that is the case, I guess we'd have to put another method to the driver interface that is called from the endpoint leave flow19:00
apuimedootherwise, we'll have to see if we can get the endpoint id from anywhere19:00
mchiappebut I was also wondering what is the rationale behind having the interfaces created and deleted in join/leave in the current code before considering it as a long term solution19:01
mchiappethe other approach is tricky because docker uses references to namespaces in a non-standard dir, because we would need to move the container namespace, where the interface name is different19:02
mchiappeto be able to use pyroute2 we would need to create a symlink19:03
mchiappeor open the namespace, get the filedescriptor, and use the setns syscall19:04
mchiappeI guess it's what NSPopen does19:04
mchiappebut you would also need to create some mappings to keep track of all this stuff19:04
mchiappeI think we can work on a fix, tomorrow we should be able to check whether approach #2 is doable19:06
mchiappethen I think we can continue the conversation :)19:06
mchiappeapuimedo: is there any (long term) plan to move all the neutron client stuff in kuryr-lib?19:11
apuimedomchiappe: pyroute2 can get the namespace location changed at runtime IIRC19:12
mchiappeyes, iif you have a link in /var/run/netns19:12
apuimedomchiappe: not a well defined plan19:12
apuimedolet me check, there was some issue about it recently19:13
apuimedo(about pyroute2 namespace dir)19:13
mchiappewell, is it a goal? :)19:13
mchiappeI just tested it, it's like iproute19:13
apuimedoit is something that we consider doing when we see how common the k8s and the libnetwork parts are19:13
mchiappeyou need to create a symlink there19:13
apuimedomchiappe: https://github.com/svinota/pyroute2/issues/29019:14
apuimedocheck the 4th comment19:14
mchiappeyep, 1 sec19:14
mchiappethat would be nice19:16
mchiappebut you still need to store somewhere the namespace id for the Leave call19:17
mchiappeand maybe the interface ID19:17
mchiappebut yes, can be done19:17
apuimedo;-)19:32
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openstackgerritIlya Chukhnakov proposed openstack/kuryr-kubernetes: Watcher implementation  https://review.openstack.org/37604323:48
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