Wednesday, 2020-08-12

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rm_workinteresting note -- we saw it was slower than other LBs, possibly locationally -- so i did a failover at the 17:30 line00:43
rm_workso that's what happens to metrics during a failover event, and also yes, on a new HV it sped up significantly00:43
rm_workred line is total_connections, yellow line is active_connections00:44
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johnsomrm_work: yeah, you should see some short delays during failover, we can tune that sub second if needed. There should not be any errors, but there may be a patch needed to make it zero I have in the back of my head.01:24
rm_workyeah the interesting thing to me was the active_connections going up to like double01:25
johnsomSo host over subscribed maybe?01:25
johnsomThis is tcp right?01:26
johnsomLike http with keepalive I suspect01:26
johnsomStill not stressing the LB really01:27
rm_worknot clear on why this is the max we can seem to get01:28
rm_workit's beyond my skillset01:28
rm_workeven just VM to VM the max i can get is like 4000-6000 RPS01:29
rm_workwithout a LB involved01:29
johnsomHa, yeah, that can go deep to figure out01:29
rm_workLB really doesn't influence it at all01:29
rm_workVM -> VM == 6000 top RPS01:29
rm_workVM -> LB -> 2 VMs == 6000 top RPS01:29
johnsomYeah, something is not right in the underlying network01:30
johnsomIn my experience the LB overhead is a small percent, so at those low levels it is probably hard to measure01:30
johnsomSo, you can say you have zero overhead and full available bandwidth! Lol01:32
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johnsom100% of available bandwidth! ???? Grin01:36
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cgoncalvesopenstackgerrit is down :/10:11
cgoncalvesah, it was announced and to be "offline for a short period". it's been 12 hours now10:12
cgoncalveshmm, openstackgerrit is online actually but did not join here the channel10:20
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johnsomYeah, I noticed it never came back yesterday, but gave opendev the benefit of not complaining until today. Did you mention it over there?13:54
cgoncalvesyes, #opendev. gave some examples of changes14:01
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johnsom#startmeeting Octavia16:00
openstackMeeting started Wed Aug 12 16:00:27 2020 UTC and is due to finish in 60 minutes.  The chair is johnsom. Information about MeetBot at
openstackUseful Commands: #action #agreed #help #info #idea #link #topic #startvote.16:00
*** openstack changes topic to " (Meeting topic: Octavia)"16:00
openstackThe meeting name has been set to 'octavia'16:00
johnsomHello everyone! Welcome to another week in Octavia land.16:01
johnsom#topic Announcements16:01
*** openstack changes topic to "Announcements (Meeting topic: Octavia)"16:01
johnsomThe Open Infrastructure Summit is virtual and free October 19-23, to register you can go to this link:16:02
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johnsom#link https://openinfrasummit2020.eventbrite.com16:02
johnsomI know we have one presentation proposed, plus the usual project updates, etc.16:02
johnsomThe Project Teams Gathering is also virtual and free October 26-30:16:02
johnsomSo if you are interested in either event, they are free so sign up today!16:03
johnsomAlso of note, gerritbot is broken, so patches posted are not being announced in the channel. opendev is on it.16:03
johnsomThe last item I have is I am taking a long weekend, so will not be around Friday through Monday.16:04
johnsomAny other announcements this week?16:04
cgoncalvesone other note related to infra, there are some IPv6 issues somewhere on the internetzz where CI jobs can't reach pypi so they fail16:05
cgoncalvesplease refrain from rechecking patches until this is resolved16:05
johnsomAh, I heard something about that but didn't see the details. Joy.16:06
johnsom#topic Brief progress reports / bugs needing review16:07
*** openstack changes topic to "Brief progress reports / bugs needing review (Meeting topic: Octavia)"16:07
ataraday_Give a round of reviews, and finally fixed default ciphers change16:08
johnsomI have been heads down working on the tempest tests. I think the bulk of the work is now complete. I just have some cleanup to do and another patch to pull out bogus configuration settings and add a release note.16:09
cgoncalvesA recent DIB change broke our CentOS amphora images. I've posted patches to add non-voting amphora image build jobs to DIB CI. hopefully DIB folks will consider those job results when reviewing changes.16:09
ataraday_And want to hightlight fix for octavia-v2-dsvm-scenario-amphora-v2 job #link
cgoncalvesContinuing on the "boot faster, damn it!" saga, I noticed both Ubuntu and CentOS amps have Grub timeout set to 5 seconds. Posted a patch to drop it to 0.16:09
cgoncalvesI proposed a new DIB element "octavia-lib". it will allow us to have unreleased octavia-lib changes installed in amp images. Thanks for the reviews so far, Ann!16:10
rm_workah nice16:10
rm_workto all of that16:10
gthiemongeNeed some reviews on #link (we discussed that change 2 weeks ago and I've already received CR+2)16:10
johnsomNice, sounds like great progress!16:11
cgoncalvesalso proposed a patch to fix TLS versions and ciphers unsets (+ add unset support to the CLI)16:12
johnsomYeah, bummer that got overlooked, but thanks for catching it.16:13
johnsom#topic Open Discussion16:13
*** openstack changes topic to "Open Discussion (Meeting topic: Octavia)"16:13
johnsomAny topics for today?16:13
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ZhuXiaoYu need review :)16:14
cgoncalvesplease help review patches. ready for review patch list is getting longer and longer16:15
johnsomAh, thank you for bringing that up again. Yes, please take some time to review that specification for Active/Active16:15
ZhuXiaoYuby the way, the ECMP spec in Neutron is approved16:16
cgoncalvesZhuXiaoYu, do you have a link to the ECMP spec?16:17
cgoncalvesthis one?
johnsomSo it really is down to us reviewing the spec. I have already reviewed it once, but it looks like there haven't been comments by others yet.16:17
ZhuXiaoYu here16:18
johnsomAny other topics this week?16:20
johnsomOk, thank you everyone! Have a great week.16:21
*** openstack changes topic to "Discussions for OpenStack Octavia | Priority bug review list:"16:21
openstackMeeting ended Wed Aug 12 16:21:38 2020 UTC.  Information about MeetBot at . (v 0.1.4)16:21
openstackMinutes (text):
rm_workpart of the problem on that is i just don't have the background to understand what any of that stuff means16:21
gthiemongethank you johnsom!16:21
rm_worki get the concept of ECMP but it gets pretty complex16:22
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johnsomIt's basically a load balancer. Typically no L7.16:23
rm_worki mean those active-active specs16:23
rm_workbut yeah, I can look16:23
johnsomPlease do, thanks!16:24
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cgoncalvesall: go for CI rechecks17:00
johnsomThanks cgoncalves17:03
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