Tuesday, 2018-04-10

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openstackgerritSayali Lunkad proposed openstack/magnum master: Adding documentations about network in vms  https://review.openstack.org/55209909:11
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openstackgerritSayali Lunkad proposed openstack/magnum master: Adding glossary.rst  https://review.openstack.org/55685709:31
openstackgerritSayali Lunkad proposed openstack/magnum master: Adding documentations about network in vms  https://review.openstack.org/55209909:35
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flwangstrigazi_: rochapor1o: do we have meeting today?09:47
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strigazi_##startmeeting containers10:00
strigazi_#startmeeting containers10:00
openstackMeeting started Tue Apr 10 10:00:34 2018 UTC and is due to finish in 60 minutes.  The chair is strigazi_. Information about MeetBot at http://wiki.debian.org/MeetBot.10:00
openstackUseful Commands: #action #agreed #help #info #idea #link #topic #startvote.10:00
*** openstack changes topic to " (Meeting topic: containers)"10:00
openstackThe meeting name has been set to 'containers'10:00
strigazi_#topic Roll Call10:00
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*** strigazi_ is now known as strigazi10:01
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slunkadhi10:02
strigazihello slunkad10:02
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flwango/10:03
strigaziHello flwang10:03
flwangstrigazi: hello10:03
flwangi need to catch up with you after the meeting ;)10:03
strigaziflwang: sure :)10:03
strigazi#topic Blueprints/Bugs/Ideas10:04
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strigaziI have potentially good news on our issue with eventlet flwang, this solution worked for me:10:04
strigazihttps://github.com/eventlet/eventlet/issues/172#issuecomment-37942116510:04
flwangstrigazi: great10:05
flwangstrigazi: if we can fix it in eventlet, then i can save my time to focus on the monitoring part10:05
strigaziyes10:06
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ricolin__O/10:07
strigaziFrom my side, I did some progress on upgrades and moved all minion software configs to software deployements10:07
strigazihi ricolin__10:07
flwangstrigazi: as for the upgrade sepc, i left a comment recently10:08
strigaziI'll push the patch after the meeting, slunkad it will be interesting for you, to rotate the trust in the cluster10:08
strigaziflwang: I'll have a look10:08
strigaziAlso, I pushed the patch for adding flannel in the master node.10:09
slunkadstrigazi: hmm would we need to consider that for upgrades too?10:09
strigazi#link https://review.openstack.org/#/c/558836/10:09
flwangstrigazi: generally, when we say 'upgrade', it means upgrade the version of the coe.10:09
flwangbut seems we don't have an API to expose that info for end user10:09
strigazistrigazi: and OS10:09
flwangstrigazi: yes10:09
flwangand seems it's not mentioned in your sepc unless i missed10:10
strigaziyes, I'll push a WIP for the API reference10:10
flwangstrigazi: great, that's the thing i'm looking forward to10:10
panfyHi folks10:11
strigazislunkad: the main difference  (in magnum context ) between SoftwareConfig and deployment is that configs are immutabl whereas deployments can cange10:12
strigazi/s/cange/change10:12
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flwangpanfy: hello10:12
slunkadok10:13
strigaziAnd on more bit on syscontainers, I did some testing on the speed that the containers are pulled into the ostree storage and it is a bit slow. Could someone reproduce, I'm fetching the silly script I have10:14
flwangstrigazi: on nested virt or just bare metal?10:15
strigaziflwang: nested virt10:15
flwangstrigazi: ok, i can test it10:16
strigaziI'm doing a sed from our private registry10:16
flwangstrigazi: btw, cern is using a private registry?10:16
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strigazihttp://paste.openstack.org/show/718800/10:18
strigaziflwang: yes, we have a gitlab deployment which has a container registry10:19
flwangstrigazi: good to know, thanks10:19
strigaziAnd I owe to panfy the docs to build syscontainers10:20
strigaziThat's it from me10:21
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flwangok, my turn10:21
panfyYeah, I have try it, https://hub.docker.com/u/fengyunpan/10:22
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flwangi have proposed the fix for NetworkManager working with calico10:22
flwangmerging into the same calico-node on k8s master patch10:22
flwangand i also have a fix for Prometheus missing RBAC10:22
strigaziflwang: do we need the networkmanager fix in the master node too?10:23
flwangBesides, i have another patch fixing the HA of DNS pod10:23
flwangstrigazi: we don't because there is no user's workload(pod) running on master kubelet10:23
flwangin otherwords, there is no interface created by calico on master node10:24
strigaziflwang: would there be any implication on adding the same recipe on the master?10:25
flwangstrigazi: no, i don't think so10:26
strigaziflwang: does kubectl proxy work with this fix?10:26
flwangbecause the solution just telling NetworkManager don't manage the interface created by calico10:26
flwangcalico will take care them10:27
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flwangstrigazi: yes10:27
flwangno impact for kubectl proxy based on my understanding10:27
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strigaziok10:27
strigazithe dns autoscaler is still in WIP?10:27
flwangit's ready and I have tested, https://review.openstack.org/#/c/555223/3/magnum/drivers/common/templates/kubernetes/fragments/core-dns-service.sh10:28
flwangbut i'd like to get you guys opinion10:28
flwangbecause currently i'm using the same way used by GKE10:28
flwangbut TBH, i think DaemonSet can achieve the same goal10:28
strigaziin 100node cluster isn't it an overkill?10:29
strigazito have a DS?10:29
flwangfor that case, we can use the way i'm proposing10:31
flwangwe can define scale strategy10:31
strigaziflwang: where does this recipe for autoscaling come from? Is there a source?10:31
flwangbut IMHO, using one pod for a prod k8s cluster is not a best practice10:31
flwangstrigazi: yes, wait a sec10:32
flwangstrigazi: https://github.com/kubernetes-incubator/cluster-proportional-autoscaler10:32
flwangGKE is using it as well, as i mentioned above10:32
strigaziflwang: I think the autoscaler is better than ds and better than a single pod as it is now.10:33
flwangstrigazi: cool, then i will polish the auto scaling policy a bit to get a balance10:33
flwangthanks for the feedback10:33
panfy'define scale strategy' sounds good.10:34
flwangpanfy: thanks for the feedback10:35
strigaziWould it make sense to have a generic strategy and then let the cluster admin modify for his needs?10:36
flwangstrigazi: cluster admin can adjust the policy by change the configmap dynamically10:37
strigaziyes10:37
flwang"The ConfigMap provides the configuration parameters, allowing on-the-fly changes(including control mode) without rebuilding or restarting the scaler containers/pods."10:37
flwangso yes10:37
strigaziyes, I mean, we won't have an option for this in magnum10:38
flwangi don't think it's necessary10:38
flwangwe just need to document it somewhere10:38
flwangat least, in release note10:38
flwangi will add a release note anyway10:39
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flwangand maybe a user guide10:39
strigaziyes10:39
flwangthanks for reminding me10:39
strigaziflwang: any news on keystone auth?10:41
flwangstrigazi: i have built a docker image10:41
flwangi'm thinking if we can publish it on openstackmagnum account10:41
flwangand i'm about to write code this week10:41
flwangthe code should be easy, just some testing work10:42
strigazihow is it going to run on the cluster?10:42
strigazias docker,  syscontainer, pod?10:42
strigazias docker container,  syscontainer, pod?10:42
flwangwe can just run it as a pod10:42
strigazion the master node10:43
strigazi?10:43
flwangyes10:43
strigaziso kubelet must be always present10:43
flwangprobably, i have dig into the details, lingxian did the original test10:43
flwangi will double check with him10:43
flwangi mean 'i haven't dig into the details', sorry10:44
strigaziok, thanks10:44
strigaziDo you want to add anything else?10:45
flwangthat's all from my side, thanks10:45
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panfyBTW, can we add a option "enable_master_kubelet"? If enable_master_kubelet is true, run kubelet syscontainer on master, or not run kubelet on master10:47
panfyIn other words, why not run kubelet syscontainer on master?10:48
strigazipanfy: we could, but if need it for many use cases, we might just put it back10:48
flwangstrigazi: +110:51
flwangpanfy: as strigazi said, we can revisit this later10:51
strigaziI'll check what we can with size of the system containers and how we can do better10:51
panfy strigazi: +1 flwang: +110:51
flwangbut, one of the topics we recently discussed is, hide the master node for end user, so....10:52
flwanganyway, it's still under discussing, will see10:55
panfyI find that remove kubelet and kube-proxy from master by https://review.openstack.org/#/c/514604/10:55
flwangpanfy: yes, it's removed in queens10:56
strigaziwe had been runing kubelet for a couple of releases in the master nodes only for the the kubernetes components which where moved to the syscontainers10:57
strigazibeing very lucky, when I removed it, we started to need it again10:57
panfyOh, I see, thx10:57
panfyyaaas, intresting10:58
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strigaziwe are out of time, we can continue in the channel, thanks10:59
strigazi#endmeeting10:59
*** strigazi is now known as strigaz_10:59
*** strigaz_ is now known as strigazi_10:59
strigazi_#endmeeting10:59
*** openstack changes topic to "OpenStack Containers Team"10:59
openstackMeeting ended Tue Apr 10 10:59:41 2018 UTC.  Information about MeetBot at http://wiki.debian.org/MeetBot . (v 0.1.4)10:59
openstackMinutes:        http://eavesdrop.openstack.org/meetings/containers/2018/containers.2018-04-10-10.00.html10:59
openstackMinutes (text): http://eavesdrop.openstack.org/meetings/containers/2018/containers.2018-04-10-10.00.txt10:59
openstackLog:            http://eavesdrop.openstack.org/meetings/containers/2018/containers.2018-04-10-10.00.log.html10:59
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