环境：阿里云虚拟机Ubuntu系统

问题一：安装k8s时报错

症状：要么抛出异常提示Unable to locate package kubectl，要么提示

The repository ‘https://mirrors.aliyun.com/kubernetes/apt kubernetes-xenial InRelease’ is not signed

依序解决：

使用国内镜像¹： echo "deb https://mirrors.aliyun.com/kubernetes/apt/ kubernetes-xenial main" | sudo tee /etc/apt/sources.list.d/kubernetes.list

安装GPG秘钥²：curl https://mirrors.aliyun.com/kubernetes/apt/doc/apt-key.gpg |sudo apt-key add -

sudo apt-get update

apt-get install -y kubelet kubeadm kubectl

问题二：初始k8s时报错

解决³：init前调用：

rm /etc/containerd/config.toml
systemctl restart containerd