老师，请问这里填v1.19.14 还是v1.21.6 ?
我填了v1.21.6，然后继续往下，在将node添加进cluster的时候会报错

后来我填了v1.19.14试了一下

root@master0:~# kubeadm init --image-repository registry.aliyuncs.com/google_containers --pod-network-cidr=10.244.0.0/16 --kubernetes-version=v1.19.14 --apiserver-advertise-address=${EXPOSE_IP} --node-name=master0
this version of kubeadm only supports deploying clusters with the control plane version >= 1.20.0. Current version: v1.19.14
To see the stack trace of this error execute with --v=5 or higher
root@master0:~# 

也就是说，课件里面百度网盘的安装包不适应了。