Friday, 2019-07-12

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openstackgerritAdam Harwell proposed openstack/octavia master: Make amphora use a single HAProxy instance  https://review.opendev.org/66806809:10
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openstackgerritAnn Taraday proposed openstack/octavia master: Use retry for AmphoraComputeConnectivityWait  https://review.opendev.org/66279113:16
openstackgerritAnn Taraday proposed openstack/octavia master: Convert pool flows to use dicts  https://review.opendev.org/66538113:22
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openstackgerritAnn Taraday proposed openstack/octavia master: [WIP] Transition amphora flows to dicts  https://review.opendev.org/66889813:59
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spateljohnsom: yt?18:24
johnsomspatel Hi18:25
spatelIf i am using SINGLE method amphora in that case if my amphora die, does it going to spin up new one itself?18:25
johnsomYes18:25
spatelso its not bad compare to ACTIVE-STANDBY18:25
spatelas far as service get heal i think SINGLE make sense.18:26
johnsomspatel SINGLE failover can take a minute or more, where ACTIVE-STANDBY is a few seconds at most18:26
spatelbut ACTIVE-STANDBY eating 3 public IPs also :)18:26
johnsomYep, there are trade offs for sure.18:27
spatelit would be good if we have option to tell on fly build SINGLE or HA :)18:27
johnsomWe do, it's called flavors18:27
spateloh wait, i thought SINGLE or ACTIVE-STANDBY is hardcoded in config file..18:28
johnsomNo, that is just the default18:28
spatelhow do i tell my flavor ?18:28
johnsomhttps://docs.openstack.org/octavia/latest/admin/flavors.html18:28
johnsomload balancer show will tell what flavor a load balancer was created with, if any18:28
spatelbravo!!! --flavor-data '{"loadbalancer_topology": "SINGLE"}'18:29
spatelglad to see that option :)18:30
spatelsomehow i started liking octavia :) sill badly waiting for ACTIVE-ACTIVE18:30
johnsomThat was my "project" for Stein18:30
spatelI am running stein :D18:31
johnsomYeah, Act/Act might get some work soon-ish. I know some folks have talked about starting on it again.18:31
spatelfor Act/Act are you guys going to use DNS CNAME style method and RR right?18:32
johnsomNo, it is not DNS based18:32
johnsomThat would not allow session persistence to work correctly18:32
spatelHmm that is what AWS used right ?18:33
johnsomFor ELB yes, that is what they use18:33
johnsomALB Is different18:33
spatelCan you tell me what octavia going to use for Act/Act.. just curious18:33
johnsomThere are two approaches. One uses a "distributor" that sits in front of the amphora and does a very lightweight, but consistent, load balance. The other uses an L3 method and top-of-rack switches.18:34
johnsomThe initial distributor is using OVS and OpenFlow18:35
johnsomThere are three specifications published here: https://docs.openstack.org/octavia/latest/contributor/index.html#project-specifications18:36
spateloh wait.. so we have to use OVS for that right?  we are all LinuxBridge at present18:36
johnsomInitial design uses OVS in a VM, so neutron ML2 doesn't matter18:37
spatelinteresting18:39
johnsomThat said, there are some advantages to using OVS for your ML2 in neutron. You should consider it.18:39
spateldoesn't distributer will be single point of failure ?18:39
johnsomNo, it can be act/stdby too18:40
spatelWe already deployed OVS :(18:40
spatelsorry LinuxBridge**18:40
spatelnot OVS18:40
spatelOVS is little complicated so trying to stay away but if it required then we have to do that18:41
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johnsomWell, OVS in Octavia would be managed by Octavia, so you really shouldn't have to mess with it.18:47
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openstackgerritMichael Johnson proposed openstack/octavia master: Make amphora use a single HAProxy instance  https://review.opendev.org/66806818:57
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openstackgerritAdam Harwell proposed openstack/octavia master: Make amphora use a single HAProxy instance  https://review.opendev.org/66806819:34
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nicodemus_hello!20:17
nicodemus_I'm having trouble instantiating the Octavia client in python... does anyone have an example?20:18
johnsomopenstack loadbalancer list20:19
johnsomI that what you are looking for?20:19
johnsomWe have a cookbook document that you might be interested in: https://docs.openstack.org/octavia/latest/user/guides/basic-cookbook.html20:20
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nicodemus_hi john, actually I'm writing code and use the old clients to ask the different openstack apis for data about vms and such20:22
johnsomAh, if you are writing code I would encourage you to use the OpenStack SDK: https://docs.openstack.org/openstacksdk/latest/20:23
nicodemus_the old clients expect a session for instantianting them, but not octavia client20:23
nicodemus_I'll review the SDK, thanks!20:24
johnsomWe are moving to using it more than individual project client code.20:24
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