1.錯誤
[root@k8s-master ~]# yum-config-manager --add-repo http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo
-bash: yum-config-manager: command not found
#解決辦法
yum -y install yum-utils
Unable to establish SSL connection.
網絡搜尋了大部分是說加上參數 --no-check-certificate