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Node Layouts------------
There are four node layout types: `default`, `separate`, `ha`, and `scale`.
`default` is a non-HA two nodes setup with one separate `kube-node`and the `etcd` group merged with the `kube-master`.
`separate` layout is when there is only node of each type, which includes a kube-master, kube-node, and etcd cluster member.
`ha` layout consists of two etcd nodes, two masters and a single worker node,with role intersection.
`scale` layout can be combined with above layouts. It includes 200 fake hostsin the Ansible inventory. This helps test TLS certificate generation at scaleto prevent regressions and profile certain long-running tasks. These nodes arenever actually deployed, but certificates are generated for them.
Note, the canal network plugin deploys flannel as well plus calico policy controller.
GCE instances-------------
| Stage| Network plugin| OS type| GCE region| Nodes layout|--------------------|--------------------|--------------------|--------------------|--------------------|| part1| calico| coreos-stable| us-west1-b| separate|| part1| canal| debian-8-kubespray| us-east1-b| ha|| part1| weave| rhel-7| europe-west1-b| default|| part2| flannel| centos-7| us-west1-a| default|| part2| calico| debian-8-kubespray| us-central1-b| default|| part2| canal| coreos-stable| us-east1-b| default|| special| canal| rhel-7| us-east1-b| separate|| special| weave| ubuntu-1604-xenial| us-central1-b| default|| special| calico| centos-7| europe-west1-b| ha-scale|| special| weave| coreos-alpha| us-west1-a| ha-scale|
The "Stage" means a build step of the build pipeline. The steps are ordered as `part1->part2->special`.
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