Saturday, 2018-06-09

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openstackgerritkaka proposed openstack/magnum-ui master: fix tox python3 overrides  https://review.openstack.org/57387402:01
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strigaziimdigitaljim: flwang1 What we would be nice to have is the IP of the first master.10:17
strigaziThe IP of the primary master passed in the other masters10:18
strigaziregarding the comment about scaling, having two resource groups doesn't prevent master scaling.10:19
strigaziThe only limitation of scaling the master nodes is the handling of the etcd cluster.10:20
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strigaziOne more advantage is parallel creation of secondary masters and nodes.10:48
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strigaziWhat need quite some work is the dependency management between the primary master and the secondary masters. We could do it but moving all SDs to the cluster heat template.10:56
strigaziTo summarize, option A (two resource groups) has some code duplication but it is simple in kubecluster.yaml. And some logic in the python driver part to set the secondary masters to m-1. Scaling is totally possible since we will need to scale the secondary masters ResourceGroup and the primary master can be used by the the secondary masters to join the cluster.11:01
strigaziOption B has less code and with the current functionality  is in fact simpler to implement but introduces some complexity in the dependency management between  the two groups.11:04
strigaziIf etcd can be scaled using the discovery url (not sure it it possible) though the logic of a master joining a cluster goes away.11:15
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strigaziimdigitaljim: flwang1 flwang ^^11:43
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openstackgerritliuwenjing proposed openstack/magnum master: safe question  https://review.openstack.org/57401515:52
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flwang1strigazi: i can see the benefit of creating the first primary master because with that way, we could get rid of the discover-url by passing the primary master IP to others19:46
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flwang1strigazi: but given it's a bigger change and it's in the early of M-3, I would prefer to use the simple way. and I will revisit the 2 resource group method in Stein release19:48
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openstackgerritFeilong Wang proposed openstack/magnum master: Fix race condition issue for k8s  multi masters  https://review.openstack.org/57363920:44
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