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* Set small CPU requests on static pods kube-apiserver, kube-controller-manager, and kube-scheduler to align with upstream tooling and for edge cases * Effectively, a practical case for these requests hasn't been observed. However, a small static pod CPU request may offer a slight benefit if a controller became overloaded and the below mechanisms were insufficient Existing safeguards: * Control plane nodes are tainted to isolate them from ordinary workloads. Even dense workloads can only compress CPU resources on worker nodes. * Control plane static pods use the highest priority class, so contention favors control plane pods (over say node-exporter) and CPU is compressible too. See: https://github.com/poseidon/terraform-render-bootstrap/pull/161
Typhoon 
Typhoon is a minimal and free Kubernetes distribution.
- Minimal, stable base Kubernetes distribution
- Declarative infrastructure and configuration
- Free (freedom and cost) and privacy-respecting
- Practical for labs, datacenters, and clouds
Typhoon distributes upstream Kubernetes, architectural conventions, and cluster addons, much like a GNU/Linux distribution provides the Linux kernel and userspace components.
Features 
- Kubernetes v1.16.3 (upstream)
- Single or multi-master, Calico or flannel networking
- On-cluster etcd with TLS, RBAC-enabled, network policy
- Advanced features like worker pools, low-priority workers, and snippets customization
- Ready for Ingress, Prometheus, Grafana, and other optional addons
Docs
Please see the official docs and the Azure tutorial.