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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 hosts in the Ansible inventory. This helps test TLS certificate generation at scale to prevent regressions and profile certain long-running tasks. These nodes are never 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.