参考：
https://zhuanlan.zhihu.com/p/46341911
https://www.cnblogs.com/xiao987334176/p/11317844.html
https://blog.csdn.net/shuixianmu53/article/details/82752812
https://www.jianshu.com/p/a542b93ab348
Ubuntu安装kubernetes
原文：https://www.cnblogs.com/Mblog/p/13123555.html
