CKA 证书
考证经验
https://www.jianshu.com/p/135c1d618a79
k8s 中文指南
https://jimmysong.io/kubernetes-handbook/
cncf 证书描述页及报名地址
https://www.cncf.io/certification/cka/
证书开源课程
https://github.com/cncf/curriculum
考试大纲
https://github.com/cncf/curriculum/blob/master/certified_kubernetes_administrator_exam_v1.15.pdf