https://kubernetes.io/docs/setup/production-environment/tools/kubeadm/create-cluster-kubeadm/
https://kubernetes.io/docs/concepts/services-networking/service/

https://docs.cilium.io/en/stable/

https://github.com/bitnami-labs/sealed-secrets#usage

https://doc.traefik.io/traefik/v2.8/user-guides/crd-acme/

https://www.smarthomebeginner.com/traefik-forward-auth-google-oauth-2022/