使用阿里云的镜像 docker:https://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo
k8s:https://mirrors.aliyun.com/kubernetes/yum/repos/kubernetes-el6-x86_64/ #这里选择内核对应的版本
k8s签名key:https://mirrors.aliyun.com/kubernetes/yum/doc/yum-key.gpg
编辑k8s的yum源:
1 [kubernetes] 2 name=Kubernetes Repo 3 baseurl=https://mirrors.aliyun.com/kubernetes/yum/repos/kubernetes-el6-x86_64/ 4 gpgcheck=1 5 gpgkey=https://mirrors.aliyun.com/kubernetes/yum/doc/yum-key.gpg 6 enabled=1
查看yum源有没有添加上:yum repolist