在yum insatall 安装是报错 Failed connect to mirrors.cloud.aliyuncs.com:80; Connection refused 解决方法: cd /etc/yum.repos.d/ [root@web /etc/yum.repos.d]# sed -i 's/gpgcheck=1/gpgcheck=0/g' /etc/yum.repos.d/CentOS-Base.repo 3) [root@web /etc/yum.repos.d]# cat C…