Thursday, 2017-11-16

openstackgerritaditi sharma proposed openstack/watcher master: [WIP] Add Datasource Abstraction
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openstackgerritYumengBao proposed openstack/watcher-specs master: Add storage capacity balance Strategy
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openstackgerritsuzhengwei proposed openstack/watcher-specs master: listen to all necessary notifications for updating compute CDM
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openstackgerritsuzhengwei proposed openstack/watcher-specs master: cluster-maintenance-strategy
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openstackgerritsuzhengwei proposed openstack/watcher-specs master: exclude locked instances
openstackgerritAkihiro Motoki proposed openstack/watcher-dashboard master: Drop django_openstack_auth from requirements.txt
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openstackgerritsuzhengwei proposed openstack/watcher master: option to rollback action_plan when it fails
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hidekazuYumeng: alexchadin: hi08:10
alexchadinhidekazu: hi08:10
hidekazuyou are using watcher in production. supporting ha?08:11
hidekazuin my understanding, watcher does not support ha yet.08:11
hidekazuso all watcher service is not highly available. means single watcher-api, decision-engine, applier.08:12
hidekazualexchadin: Yumeng: i am sorry if you can not open in public.08:18
alexchadinhidekazu: if I understand it right, we need to sync memory items with database08:19
hidekazualexchadin: decision-engine has CDM and have to sync with db.08:20
alexchadinhidekazu: yes08:20
alexchadinhidekazu: continuous audits are already synced with db08:21
alexchadinhidekazu: what else?08:21
hidekazualexchadin: you implemented Supporting HA for background jobs in Watcher. could you teach me what is the progress for ha?08:22
alexchadinhidekazu: IMHO, CDM is the first thing to be implemented for HA08:23
hidekazualexchadin: now we can decision engine be ha?08:23
alexchadinhidekazu: ah, DE is already synced...08:23
alexchadinhidekazu: well, we can try08:23
alexchadinhidekazu: I don't see other things which should be synced with DB to enable HA08:24
hidekazualexchadin: no one tries to watcher ha in working enviroment, right?08:24
alexchadinhidekazu: right08:24
hidekazuas far as we know, of course.08:25
hidekazualexchadin: i listed ha in forum etherpad, but time was not enough to discuss.08:26
alexchadinhidekazu: do you have any experience with HA setup?08:26
hidekazualexchadin: no, but project started and asked again..08:27
hidekazulast year, vincent clearly said no to me.08:27
hidekazuso the project last year setup single watcher. and this year comes.08:28
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hidekazualexchadin: only progress is that your blueprint has implemented during one year.08:29
alexchadinI will try to run watcher in ha after talks with my architect08:31
hidekazualexchadin: so good. pike release?08:31
alexchadinhidekazu: yeap08:32
alexchadinhidekazu: 1 API - 2 DE - 2 Applier08:32
hidekazualexchadin: why not 2 api?08:32
alexchadinhidekazu: maybe 2 api08:33
Yumenghidekazu: it's ok.08:34
Yumenghidekazu:when we did the test, we once used the following : Node 1 as the main controller node with watcher api, decision-engine, Node 2 as a backup controller node and a compute node  with watcher-api, decision-engine ,Node 3  and Node 4 as compute node.08:34
hidekazuYumeng: controllers are active -standby?08:37
suzhengweiOne active, others standby?08:39
Yumenghidekazu: yes. one active, the other standby08:40
hidekazuYumeng: controller includes applier, right? maybe you just missed.08:41
Yumenghidekazu:yes yes with applier08:42
suzhengwei In my env, it has tree controllers, all active and watcer-api use VIP to provide service.08:46
hidekazusuzhenwei: ocata?08:47
hidekazusuzhengwei: working?08:47
suzhengweiit works.08:48
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hidekazusuzhengwei: but you reported  watcher-api haproxy problem.08:49
suzhengweiBut I noticed that one audit created by watcher-api from the vip watcher-api, but execued in another controller.08:49
hidekazusuzhengwei: resolved?08:49
suzhengweiNo, it doesn't use haproxy for watcher-api.08:50
suzhengweijust only use VIP.08:51
hidekazusuzhenwei: only watcher-apis are active standby?08:51
hidekazuYumeng: do you have experience with bad case by active active?08:53
adisky_hidekazu: hi08:53
hidekazuadisky_: hi08:53
Yumenghidekazu: sorry, we didn't try active active. :(08:54
hidekazuYumeng: ok08:55
hidekazuso we shared ocata version real ha case. thanks .08:56
Yumenghidekazu: Could you explain more about watcher HA ? I was not very clear about what's a real watcher HA should be like.08:58
hidekazuYumeng: for me,watcher service is installed in each controllers(3 node) and watcher-api are load balanced. if one controller  has down, all services are fine.09:01
hidekazuYumeng: user does not know one controller is down.09:02
Yumenghidekazu:  got it. thanks!09:06
hidekazuYumeng: if active standby, system needs switching time for short period.  so active active is better.09:06
hidekazuYumeng: welcome09:06
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openstackgerritMerged openstack/watcher-specs master: Add Datasource Abstraction and Multi Datasource
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openstackgerritAndreas Jaeger proposed openstack/watcher-dashboard master: Remove setting of version/release from releasenotes
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