1、执行宝塔面板报错

[root@localhost ~]# yum install -y wget && wget -O install.sh https://download.bt.cn/install/install_6.0.sh && sh install.sh ed8484bec

2、报错信息如下

CentOS Linux 8 - AppStream    
错误：为仓库 'appstream' 下载元数据失败 : Cannot prepare internal mirrorlist: No URLs in mirrorlist

3、执行下面两句解决

sed -i -e "s|mirrorlist=|#mirrorlist=|g" /etc/yum.repos.d/CentOS-*
sed -i -e "s|#baseurl=http://mirror.centos.org|baseurl=http://vault.centos.org|g" /etc/yum.repos.d/CentOS-*