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openstackgerrit | OpenStack Proposal Bot proposed openstack/kuryr-kubernetes master: Updated from global requirements https://review.openstack.org/509781 | 11:01 |
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dulek | Meeting time? | 14:00 |
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openstackgerrit | Merged openstack/kuryr-kubernetes master: Fix KeyError exception upon service/deployment deletion https://review.openstack.org/512636 | 14:29 |
janonymous | dulek: hey! you got everything covered about cni daemon? anything i can look into :D | 14:40 |
dulek | janonymous: Logging, unit tests and docs are done. I've struggled last week with bug irenab's found. | 14:41 |
janonymous | dulek: which bug? netlink? | 14:41 |
dulek | janonymous: It was related to SocketServer+ThreadingMixIn - looks like using those two make server unable to answer multiple requests. | 14:42 |
dulek | janonymous: 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 |
janonymous | dulek: have you got a chance to find out why's that ? | 14:43 |
janonymous | socketserver + threadmixing | 14:43 |
dulek | janonymous: 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 |
janonymous | any comments related to that? | 14:44 |
dulek | janonymous: apuimedo suggests using some real WSGI server instead. And I think we'll be forced to go that route. | 14:44 |
janonymous | i cannot find comments on the patch about socketserver + threadmixing | 14:45 |
dulek | janonymous: Ah, right, because irenab just mentioned it on IRC. | 14:45 |
dulek | janonymous: Starts here: http://eavesdrop.openstack.org/irclogs/%23openstack-kuryr/%23openstack-kuryr.2017-10-17.log.html#t2017-10-17T08:35:42 | 14:46 |
janonymous | thanks | 14:46 |
dulek | I was investigating that through all the day - so you can see my later discussions as well. | 14:46 |
janonymous | this was netlink error | 14:46 |
dulek | janonymous: Yes, but it happened because of lost requests: | 14:47 |
dulek | 1. Multiple requests are sent to kuryr-daemon. | 14:47 |
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dulek | 2. Kuryr daemon does respond only to one (caused by ThreadingMixIn, I don't know exactly why). | 14:47 |
janonymous | threadmixing should ideally handle that.. | 14:48 |
dulek | 3. But all the requests are fulfilled - i.e. ports are wired. | 14:48 |
janonymous | is it stuck on response? | 14:48 |
dulek | 4. CNI doesn't get a response for one pod, so it retries. | 14:48 |
dulek | 5. CNI daemon tries to wire the pod again and fails with EEXIST (this netlink error)> | 14:48 |
janonymous | strange, but why does cni does not gets response? | 14:49 |
janonymous | timeout? | 14:49 |
dulek | janonymous: No, just response were lost sometimes. | 14:49 |
dulek | janonymous: I was surprised as well and I wasn't been able to find the root cause. | 14:49 |
janonymous | lost.. | 14:50 |
janonymous | seems a strange behaviour, i will check that too | 14:50 |
dulek | janonymous: If you'll be able to debug it - it'll be cool.l | 14:51 |
dulek | Patchset #31 has the issue. | 14:51 |
janonymous | i'm just afraid that eventlet is not coming in the way.... because of pyroute | 14:51 |
janonymous | it spawns a new process, and might be a case there.. | 14:52 |
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janonymous | but will try to reproduce the issue and check | 14:52 |
dulek | janonymous: Great! | 14:54 |
dmellado | Folks, lost the meeting | 15:07 |
dmellado | But disregard Jenkins | 15:07 |
dmellado | There's only zuul xD | 15:07 |
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