国内 Ubuntu 20.04 安装kubeadm

命令如下：

sudo apt-get update && apt-get install -y apt-transport-https ca-certificates curl

# 更换镜像
curl https://mirrors.aliyun.com/kubernetes/apt/doc/apt-key.gpg | sudo apt-key add -

echo "deb https://mirrors.aliyun.com/kubernetes/apt/ kubernetes-xenial main" | sudo tee /etc/apt/sources.list.d/kubernetes.list

sudo apt-get update

sudo apt-get install -y kubelet kubeadm kubectl