486b223e01
This replaces kube-master with kube_control_plane because of [1]:
The Kubernetes project is moving away from wording that is
considered offensive. A new working group WG Naming was created
to track this work, and the word "master" was declared as offensive.
A proposal was formalized for replacing the word "master" with
"control plane". This means it should be removed from source code,
documentation, and user-facing configuration from Kubernetes and
its sub-projects.
NOTE: The reason why this changes it to kube_control_plane not
kube-control-plane is for valid group names on ansible.
[1]: https://github.com/kubernetes/enhancements/blob/master/keps/sig-cluster-lifecycle/kubeadm/2067-rename-master-label-taint/README.md#motivation
33 lines
1.4 KiB
Markdown
33 lines
1.4 KiB
Markdown
# Node Layouts
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There are four node layout types: `default`, `separate`, `ha`, and `scale`.
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`default` is a non-HA two nodes setup with one separate `kube-node`
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and the `etcd` group merged with the `kube_control_plane`.
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`separate` layout is when there is only node of each type, which includes
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a kube_control_plane, kube-node, and etcd cluster member.
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`ha` layout consists of two etcd nodes, two masters and a single worker node,
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with role intersection.
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`scale` layout can be combined with above layouts (`ha-scale`, `separate-scale`). It includes 200 fake hosts
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in the Ansible inventory. This helps test TLS certificate generation at scale
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to prevent regressions and profile certain long-running tasks. These nodes are
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never actually deployed, but certificates are generated for them.
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Note, the canal network plugin deploys flannel as well plus calico policy controller.
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## Test cases
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The [CI Matrix](/docs/ci.md) displays OS, Network Plugin and Container Manager tested.
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All tests are breakdown into 3 "stages" ("Stage" means a build step of the build pipeline) as follows:
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- _unit_tests_: Linting, markdown, vagrant & terraform validation etc...
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- _part1_: Molecule and AIO tests
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- _part2_: Standard tests with different layouts and OS/Runtime/Network
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- _part3_: Upgrade jobs, terraform jobs and recover control plane tests
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- _special_: Other jobs (manuals)
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The steps are ordered as `unit_tests->part1->part2->part3->special`.
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