Friday, 2020-11-06

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user_19173783170I'm setting up my 3rd party ci system, but when i testing communication Between upstream and my ci system06:10
user_19173783170there's a trouble in the zuul log which was "zuul.Scheduler: Project opendev/ci-sandbox not found"06:12
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user_19173783170can someone give me some idea?06:20
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gibiclarkb: hi! is there a way to see why e-r indexing is slow?10:44
gibiclarkb: we have a bug https://bugs.launchpad.net/nova/+bug/1902276 that as a side effect generates 100MBs of libvirtd.log10:45
openstackLaunchpad bug 1902276 in OpenStack Compute (nova) "libvirtd going into a tight loop causing instances to not transition to ACTIVE" [Undecided,New]10:45
gibiclarkb: could this be the cause of the slow logstash indexing?10:45
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dulekFolks, had anything changed regarding Google DNS accessibility on gate VMs?11:44
dulekWe're seeing quite lot of "2020-11-05T09:51:02.430Z [ERROR] plugin/errors: 2 svc-server.network-policy-4259. A: read udp 10.1.0.210:37572->8.8.8.8:53: i/o timeout" in our coredns instances.11:45
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fungidulek: are you communicating with that directly, or going through the unbound dns cache running on the node? we use a caching recursive resolver on nodes to reduce query volume precisely because the public dns servers and connectivity to them are unreliable12:43
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dulekfungi: Ah, well this is multilevel issue then.13:57
dulekfungi: So we're doing that directly.13:57
dulekBecause we need coredns running on our K8s cluster and it needs to forward non-local queries somewhere.13:58
dulekWe could just make it forward to the DNS taken from the VMs resolv.conf.13:58
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dulekBut we were told it'll sometimes be IPv6 and we don't implement dual stack for pods (coredns runs in a pod).13:59
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fungidulek: yes, that's part of the reason too... in some of our providers there's no global ipv4 addressing for nodes so they go through a layer-4 overload nat/pat to a common global ipv4 address for reaching v4-only resources on the internet. that nat can get strained and is increasingly likely to cause v4 protocols like udp, which have no retransmission signalling, to fail in ugly ways14:02
fungiin those providers, dns over ipv6 is likely to perform far better because the nodes can use their individual global v6 addresses to communicate and not have to deal with the dangers of nat14:03
dulekfungi: Can you tell me which providers have that so I can try to check if this is the culprit?14:04
fungilimestone and openedge at the very least, let me see if i can spot some others14:05
donnydfungi: No jobs are running on OE at this point because my edge rtr is about to die14:07
dulekfungi: Recently we seen the issue on rax-iad and rax-dfw14:07
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fungialso linaro i think14:07
fungirackspace is dual-stack with global ipv4 and global ipv6 so no nat there14:08
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dulekSo it's something else then. :/14:24
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funginotably, rackspace is the provider which drove us to not use provider-supplied recursive resolvers, because they blacklist misbehaving instance ip addresses from using their resolvers, but their blacklist lags ip allocation to new instances, so we would regularly boot a new node and find it unable to perform any dns queries14:36
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openstackgerritThierry Carrez proposed openstack/project-config master: Create inspur/venus repository  https://review.opendev.org/76175114:50
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openstackgerritJeremy Stanley proposed openstack/project-config master: Run publish-openstack-artifacts on ubuntu-focal  https://review.opendev.org/76177617:49
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