yum install -y https://mirrors.aliyun.com/saltstack/yum/redhat/salt-repo-latest-2.el7.noarch.rpm
仍以 Centos 7 为例，初始化rpm包生成的配置文件为:
/etc/yum.repos.d/salt-latest.repo
文件中的访问地址需要替换成镜像站的路径，执行命令：
sudo sed -i "s/repo.saltstack.com/mirrors.aliyun.com\/saltstack/g" /etc/yum.repos.d/salt-latest.repo
yum install -y salt-master
yum install -y salt-minion
systemctl start salt-master
systemctl start salt-minion