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openstackgerrit | kaka proposed openstack/magnum-ui master: fix tox python3 overrides https://review.openstack.org/573874 | 02:01 |
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strigazi | imdigitaljim: flwang1 What we would be nice to have is the IP of the first master. | 10:17 |
strigazi | The IP of the primary master passed in the other masters | 10:18 |
strigazi | regarding the comment about scaling, having two resource groups doesn't prevent master scaling. | 10:19 |
strigazi | The only limitation of scaling the master nodes is the handling of the etcd cluster. | 10:20 |
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strigazi | One more advantage is parallel creation of secondary masters and nodes. | 10:48 |
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strigazi | What 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 |
strigazi | To 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 |
strigazi | Option 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 |
strigazi | If 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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strigazi | imdigitaljim: flwang1 flwang ^^ | 11:43 |
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openstackgerrit | liuwenjing proposed openstack/magnum master: safe question https://review.openstack.org/574015 | 15:52 |
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flwang1 | strigazi: 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 others | 19:46 |
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flwang1 | strigazi: 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 release | 19:48 |
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openstackgerrit | Feilong Wang proposed openstack/magnum master: Fix race condition issue for k8s multi masters https://review.openstack.org/573639 | 20:44 |
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