摘要： 0.Xshell远程连接到Centos8.5 连接 centos系统后，首先关闭防火墙和 SELINUX，如不关闭会各种拦截，网页访问等故障#systemctl stop firewalld.service #关闭防火墙服务#systemctl disable firewalld.service # 阅读全文

摘要： Cent0S 8 DNF安装报错解决方法Cannot prepare internal mirrorlist: No URLs in mirrorlist 报错内容 Error: Failed to download metadata for repo 'appstream': Cannot pre 阅读全文