Monday, 2017-10-23

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openstackgerritOpenStack Proposal Bot proposed openstack/kuryr-kubernetes master: Updated from global requirements  https://review.openstack.org/50978111:01
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dulekMeeting time?14:00
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openstackgerritMerged openstack/kuryr-kubernetes master: Fix KeyError exception upon  service/deployment deletion  https://review.openstack.org/51263614:29
janonymousdulek: hey! you got everything covered about cni daemon? anything i can look into :D14:40
dulekjanonymous: Logging, unit tests and docs are done. I've struggled last week with bug irenab's found.14:41
janonymousdulek: which bug? netlink?14:41
dulekjanonymous: It was related to SocketServer+ThreadingMixIn - looks like using those two make server unable to answer multiple requests.14:42
dulekjanonymous: Netlink was caused by this first issue - netlink was happening when some requests were partially processed and CNI retried doing ADD operation.,14:42
dulek(at least I think it was that).14:42
janonymousdulek: have you got a chance to find out why's that ?14:43
janonymoussocketserver + threadmixing14:43
dulekjanonymous: I don't know why it happened, but I've fixed that by switching to BaseHTTPServer and using normal networking socket instead of unix socket.14:43
janonymousany comments related to that?14:44
dulekjanonymous: apuimedo suggests using some real WSGI server instead. And I think we'll be forced to go that route.14:44
janonymousi cannot find comments on the patch about socketserver + threadmixing14:45
dulekjanonymous: Ah, right, because irenab just mentioned it on IRC.14:45
dulekjanonymous: Starts here: http://eavesdrop.openstack.org/irclogs/%23openstack-kuryr/%23openstack-kuryr.2017-10-17.log.html#t2017-10-17T08:35:4214:46
janonymousthanks14:46
dulekI was investigating that through all the day - so you can see my later discussions as well.14:46
janonymousthis was netlink error14:46
dulekjanonymous: Yes, but it happened because of lost requests:14:47
dulek1. Multiple requests are sent to kuryr-daemon.14:47
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dulek2. Kuryr daemon does respond only to one (caused by ThreadingMixIn, I don't know exactly why).14:47
janonymousthreadmixing should ideally handle that..14:48
dulek3. But all the requests are fulfilled - i.e. ports are wired.14:48
janonymousis it stuck on response?14:48
dulek4. CNI doesn't get a response for one pod, so it retries.14:48
dulek5. CNI daemon tries to wire the pod again and fails with EEXIST (this netlink error)>14:48
janonymousstrange, but why does cni does not gets response?14:49
janonymoustimeout?14:49
dulekjanonymous: No, just response were lost sometimes.14:49
dulekjanonymous: I was surprised as well and I wasn't been able to find the root cause.14:49
janonymouslost..14:50
janonymousseems a strange behaviour, i will check that too14:50
dulekjanonymous: If you'll be able to debug it - it'll be cool.l14:51
dulekPatchset #31 has the issue.14:51
janonymousi'm just afraid that eventlet is not coming in the way.... because of pyroute14:51
janonymousit spawns a new process, and might be a case there..14:52
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janonymousbut will try to reproduce the issue and check14:52
dulekjanonymous: Great!14:54
dmelladoFolks, lost the meeting15:07
dmelladoBut disregard Jenkins15:07
dmelladoThere's only zuul xD15:07
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