谁来帮忙看下为什么装不上mariadb啊

yum repolist一下

先装个mariadb试试

只装mariadb报错如下
[root@localhost yum.repos.d]# yum install mariadb -y
CentOS Linux 8 - AppStream 66 B/s | 38 B 00:00
Error: Failed to download metadata for repo 'appstream': Cannot prepare internal mirrorlist: No URLs in mirrorlist
mirrorlist不是下面这个吗？
[mariadb]
name = MariaDB
baseurl = https://mirrors.aliyun.com/mariadb/yum/10.8/centos8-amd64/
gpgkey = https://mirrors.aliyun.com/mariadb/yum/RPM-GPG-KEY-MariaDB
gpgcheck=1
下面是repos信息
[root@localhost yum.repos.d]# ls
CentOS-Base.repo.rpmsave CentOS-Linux-FastTrack.repo epel.repo
CentOS-Linux-AppStream.repo CentOS-Linux-HighAvailability.repo epel-testing-modular.repo
CentOS-Linux-BaseOS.repo CentOS-Linux-Media.repo epel-testing.repo
CentOS-Linux-ContinuousRelease.repo CentOS-Linux-Plus.repo MariaDB.repo
CentOS-Linux-Debuginfo.repo CentOS-Linux-PowerTools.repo repo.bak
CentOS-Linux-Devel.repo CentOS-Linux-Sources.repo
CentOS-Linux-Extras.repo epel-modular.repo

来个大佬帮忙看下，谢谢

重新找个网络源试试吧。

源的问题罢