https://kubernetes.youngwjung.com/
https://velog.io/@dan-te/00-kubernetes-the-hard-way-소개
https://github.com/kelseyhightower/kubernetes-the-hard-way/
https://learn.kodekloud.com/courses/kubernetes-challenges
https://github.com/kodekloudhub/kubernetes-challenges/tree/master
https://github.com/xliohy/cncf
https://github.com/xliohy/kubernetes
https://github.com/subicura/workshop-k8s-basic?tab=readme-ov-file