以使用curl命令安装阿里centos8的镜像仓库，使用dnf repolist查看仓库时遇见如下报错
[root@localhost ~]# yum repolist CentOS-8 - AppStream - mirrors.aliyun.com 0.0 B/s | 0 B 00:24 CentOS-8 - base - mirrors.aliyun.com 0.0 B/s | 0 B 00:24 Failed to synchronize cache for repo 'AppStream', ignoring this repo. Failed to synchronize cache for repo 'base', ignoring this repo. Last metadata expiration check: 0:23:35 ago on Wed 02 Feb 2022 08:52:22 AM EST. repo id repo name status extras CentOS-8 - Extras - mirrors.aliyun.com 38解决方法
查看dnf日志文件(/var/log/dnf.log)
2022-02-02T14:37:46Z DEBUG Cannot download 'https://mirrors.aliyun.com/centos/8/baseOS/x86_64/os/': Cannot download repomd.xml: Cannot download repodata/repomd.xml: All mirrors were tried. 2022-02-02T14:37:46Z DEBUG repo: downloading from remote: base 2022-02-02T14:37:56Z DEBUG not found other for: CentOS-8 - base - mirrors.aliyun.com 2022-02-02T14:37:56Z DEBUG not found modules for: CentOS-8 - base - mirrors.aliyun.com
发现报错原因，并参试使用浏览器访问该网站，发现访问不了，可能是阿里方面维护或下线了该仓库
将软件仓库更改成华为仓库
# 删除原来的阿里软件仓库 [root@localhost ~]# rm -rf /etc/yum.repos.d/CentOS-base.repo # 下载华为centos8版本的软件仓库 [root@localhost ~]# curl -o /etc/yum.repos.d/CentOS-base.repo https://repo.huaweicloud.com/repository/conf/CentOS-8-reg.repo
再次测试仓库是否可用
# 清理仓库缓存 [root@localhost ~]# dnf clean all # 重新生成缓存并查看仓库软件包数量 [root@localhost ~]# dnf repolist CentOS-8 - AppStream - repo.huaweicloud.com 2.0 MB/s | 8.4 MB 00:04 CentOS-8 - base - repo.huaweicloud.com 1.6 MB/s | 4.6 MB 00:02 CentOS-8 - PowerTools - repo.huaweicloud.com 866 kB/s | 2.3 MB 00:02 CentOS-8 - Extras - repo.huaweicloud.com 4.3 kB/s | 10 kB 00:02 repo id repo name status AppStream CentOS-8 - AppStream - repo.huaweicloud.com 5,596 baseOS CentOS-8 - base - repo.huaweicloud.com 1,896 PowerTools CentOS-8 - PowerTools - repo.huaweicloud.com 1,693 extras CentOS-8 - Extras - repo.huaweicloud.com 38
可以看到，软件仓库已经没有问题
