Monday, 2018-06-25

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openstackgerritZhaoBo proposed openstack/neutron-lbaas master: Fix the None value of Q_PLUGIN_CONF_FILE if enable neutron-*  https://review.openstack.org/57568700:55
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openstackgerritMerged openstack/octavia master: Fix health manager to be spare amphora aware  https://review.openstack.org/57666803:16
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openstackgerritMerged openstack/octavia master: Change tox.ini coverage to always generate html  https://review.openstack.org/57732103:27
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openstackgerritAdit Sarfaty proposed openstack/octavia master: Providers: propose changes to create pool API  https://review.openstack.org/57424106:22
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openstackgerritZhaoBo proposed openstack/octavia master: UDP jinja template  https://review.openstack.org/52542009:15
openstackgerritZhaoBo proposed openstack/octavia master: UDP for [2]  https://review.openstack.org/52965109:15
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openstackgerritZhaoBo proposed openstack/octavia master: UDP for [2]  https://review.openstack.org/52965109:39
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openstackgerritZhaoBo proposed openstack/octavia master: UDP for [2]  https://review.openstack.org/52965113:07
openstackgerritZhaoBo proposed openstack/octavia master: UDP for [3][5][6]  https://review.openstack.org/53939113:07
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openstackgerritZhaoBo proposed openstack/octavia master: UDP for [3][5][6]  https://review.openstack.org/53939114:27
dulekHey, we've started seeing this lately: http://logs.openstack.org/60/577760/1/check/kuryr-kubernetes-tempest-daemon-containerized-octavia/a4a1048/controller/logs/screen-o-api.txt.gz#_Jun_25_12_01_23_97762814:33
dulekHad you changed something around amphora IP allocation lately?14:33
dulekI've tried looking up who's reserving that IP before Octavia, but first reservation in Neutron log happens when Octavia gets create LB request…14:34
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sapd1nmagnezi: Could you help me write unit test?15:06
johnsomdulek Hi, we actually don't do anything to specifically allocate certain IPs. Unless the user specifies one, all of the IP allocation is done by neutron for us. Either via DHCP or neutron passing us an IP.15:13
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johnsomdulek It looks like that error is from the VIP, so I wonder if that test is passing in a fixed IP.15:21
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openstackgerritsapd proposed openstack/octavia master: Exclude amphora instances already DELETED when failover loadbalancer  https://review.openstack.org/57712215:38
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openstackgerritsapd proposed openstack/octavia master: Exclude amphora instances already DELETED when failover loadbalancer  https://review.openstack.org/57712215:41
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openstackgerritCarlos Goncalves proposed openstack/octavia master: Add upgrade guide  https://review.openstack.org/57729516:08
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openstackgerritCarlos Goncalves proposed openstack/octavia master: Add upgrade guide  https://review.openstack.org/57729516:33
openstackgerritMerged openstack/neutron-lbaas master: Fix the None value of Q_PLUGIN_CONF_FILE if enable neutron-*  https://review.openstack.org/57568716:42
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openstackgerritMichael Johnson proposed openstack/octavia master: Fix configured haproxy restarts  https://review.openstack.org/57723816:50
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openstackgerritsapd proposed openstack/octavia master: Exclude amphora instances already DELETED when failover loadbalancer  https://review.openstack.org/57712217:12
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harlowjawhatsss up17:55
johnsomharlowja Hey, welcome back from vacation  Grin17:58
harlowja:-P17:58
sapd1:)17:58
johnsomSo, I am 90% sure I have asked this before, so get the ruler out to slap my wrist17:58
johnsomI have a solution, but wondered if I could do this a better way.17:58
harlowjasup17:58
johnsomI have an unordered flow, that re-merges into a main flow.17:59
johnsomI want to make it "ok" for some of the unordered sub-flows to fail, and not revert the parent main flow.17:59
johnsomIs there a way to do that?  I played with retry, but it seemed like it always reverted the parent17:59
johnsomEnd game, I want it to try to update the configs on all of the amphora in a LB, and passively fail (mark them in ERROR) should they not be reachable. The use case is when more than one of the amps in an LB fail at the same time.18:00
johnsomI worked around this in my tasks, but wondered if there is a better way to do "best  effort" sub flows18:01
harlowjahmmm18:13
* harlowja thinking18:14
* harlowja paging back in taskflow18:14
johnsomTake your time, it's mostly intellectual at this point as I worked around it.18:14
harlowjai think i'd need a kind of 'CONTINUE/SKIP' enum for retrying18:16
harlowjai can add, one does not seem to exist18:18
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openstackgerritMichael Johnson proposed openstack/octavia master: Clarify IPv6 support for the lb-mgmt-net  https://review.openstack.org/57791319:48
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lxkonggood morning, all. I came here to ask question again :-)22:12
lxkongdoes octavia supports feature similar to this https://aws.amazon.com/blogs/aws/elb-connection-draining-remove-instances-from-service-with-care/?22:12
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openstackgerritCarlos Goncalves proposed openstack/octavia master: Add upgrade guide  https://review.openstack.org/57729522:22
johnsomlxkong Yes, set the member weight to zero22:23
lxkongjohnsom: awesome, i will test now22:23
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lxkongjohnsom: i'm a little confused. When updating the weight, i can see `/usr/sbin/service haproxy-{listener_id} reload`, will that lead to interruption to the current connections?23:25
johnsomNo23:25
johnsomlxkong reload just tells HAProxy to reload it's configuration.  It will spawn a second temporary process and do a graceful hand off23:26
johnsomlxkong I will say, on versions prior to Ubuntu bionic, there is a *slight* chance a new connection could get blocked, but it's pretty small.23:27
johnsomlxkong A restart would interrupt traffic23:27
lxkongjohnsom: i just tested that setting the weight to 0 on one member causes new requirests all go to another one. But I really need to think about how to verify the connections on the first one still alive23:28
johnsomlxkong you could setup a "simple" web server with netcat that streams /dev/zero or /dev/urandom23:30
lxkongjohnsom: so, now it depends on the end user to manually set weight to 0 before manually removing the member from the pool, right?23:32
johnsom{ echo -e "HTTP/1.0 200 OK\r\n\r\n"; cat /dev/zero } |  sudo nc -l -p 80 -w 123:32
johnsomlxkong Correct23:32
lxkongjohnsom: i am using `while true; do echo -e "HTTP/1.1 200 OK\r\n\r\n${OUTPUT}\r" | sudo nc -l -p 80; done`23:32
johnsomSure, there you go23:33
johnsomWell, wait, that just does multiple connections, not a large transfer that would test it's not interrupted23:33
lxkongyeah, need modification23:34
lxkongjohnsom: does that make sense we support some param when removing member? so the member weight could be set to 0 and stay for some time before actually removed from the pool?23:35
lxkonglike other clouds do23:35
johnsomlxkong That seems pretty proprietary, I don't think any (or many) of the hardware load balancers do  that23:36
johnsomI mean it can stay weight zero forever, or use heat to set it to zero and then remove the member.23:37
lxkongjohnsom: ok, i know, it's up to the orchestration tooling the user is using23:38
johnsomlxkong Even that AWS blog post says deregistering the instance is an additional step.23:38
lxkongwhat's the default value of weight if not specified?23:38
johnsom123:39
lxkongok, i will do some more tests, thank for all the answers23:39
johnsomSure, NP23:40
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