解决：Failed to download metadata for repo ‘base‘

镜像下载、域名解析、时间同步请点击阿里云开源镜像站

file

1.先查看本机的系统信息

[root@h0436 h0436 zlong]# cat /etc/redhat-release

2.进入yum.repos.d

[root@h0436 zlong]# cd /etc/yum.repos.d

3.查看镜像文件（看看你需要修改的哪个文件）

[root@h0436 yum.repos.d]# ls
CentOS-Base.repo         CentOS-Base.repo.bak  epel.repo
CentOS-Base.repo.backup  docker-ce.repo

4.修改文件（我的是CentOS-Base.repo.backup文件）

[root@h0436 yum.repos.d]# vim CentOS-Base.repo.backup

5.如果你找不到在哪个文件夹，你就每个文件夹都vim 进去看看，找到CentOS-Base.repo就行

file

6.复制下面这一段配置就行，按键盘上“i”编辑，按ESC退出。如果要保存退出就按:wq，如果不保存退出就按:q  （图中标红的地方都是改过之后的地方）

[base]name=CentOS-8 - Base - mirrors.aliyun.com
failovermethod=priority
baseurl=http://mirrors.aliyun.com/centos/8/os/$basearch/
        http://mirrors.aliyuncs.com/centos/8/os/$basearch/
        http://mirrors.cloud.aliyuncs.com/centos/8/os/$basearch/gpgcheck=1gpgkey=http://mirrors.aliyun.com/centos/RPM-GPG-KEY-CentOS-8#released updates [updates]name=CentOS-8 - Updates - mirrors.aliyun.com
failovermethod=priority
baseurl=http://mirrors.aliyun.com/centos/8/updates/$basearch/
        http://mirrors.aliyuncs.com/centos/8/updates/$basearch/
        http://mirrors.cloud.aliyuncs.com/centos/8/updates/$basearch/gpgcheck=1gpgkey=http://mirrors.aliyun.com/centos/RPM-GPG-KEY-CentOS-8#additional packages that may be useful[extras]name=CentOS-8 - Extras - mirrors.aliyun.com
failovermethod=priority
baseurl=http://mirrors.aliyun.com/centos/8/extras/$basearch/
        http://mirrors.aliyuncs.com/centos/8/extras/$basearch/
        http://mirrors.cloud.aliyuncs.com/centos/8/extras/$basearch/gpgcheck=1gpgkey=http://mirrors.aliyun.com/centos/RPM-GPG-KEY-CentOS-8#additional packages that extend functionality of existing packages[centosplus]name=CentOS-8 - Plus - mirrors.aliyun.com
failovermethod=priority
baseurl=http://mirrors.aliyun.com/centos/8/centosplus/$basearch/
        http://mirrors.aliyuncs.com/centos/8/centosplus/$basearch/
        http://mirrors.cloud.aliyuncs.com/centos/8/centosplus/$basearch/gpgcheck=1enabled=0gpgkey=http://mirrors.aliyun.com/centos/RPM-GPG-KEY-CentOS-8#contrib - packages by Centos Users[contrib]name=CentOS-8 - Contrib - mirrors.aliyun.com
failovermethod=priority
baseurl=http://mirrors.aliyun.com/centos/8/contrib/$basearch/
        http://mirrors.aliyuncs.com/centos/8/contrib/$basearch/
        http://mirrors.cloud.aliyuncs.com/centos/8/contrib/$basearch/gpgcheck=1enabled=0gpgkey=http://mirrors.aliyun.com/centos/RPM-GPG-KEY-CentOS-8

7.清除缓存

[root@h0436 yum.repos.d]# yum clean all

8.加载缓存

[root@h0436 yum.repos.d]# yum makecache

作者：萌褚
链接：https://www.jianshu.com/p/ebbafae376c3
来源：简书
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