- A+
所属分类：linux技术
镜像下载、域名解析、时间同步请点击 阿里云开源镜像站
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
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/$basearch/ gpgcheck=1 gpgkey=http://mirrors.aliyun.com/centos/RPM-GPG-KEY-CentOS-8 #released updates [updates] name=CentOS-8 - Updates - mirrors.aliyun.com failovermethod=priority baseurl=http://mirrors.aliyun.com/centos/8/updates/$basearch/ http://mirrors.aliyuncs.com/centos/8/updates/$basearch/ http://mirrors.cloud.aliyuncs.com/centos/8/updates/$basearch/ gpgcheck=1 gpgkey=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/$basearch/ gpgcheck=1 gpgkey=http://mirrors.aliyun.com/centos/RPM-GPG-KEY-CentOS-8 #additional packages that extend functionality of existing packages [centosplus] name=CentOS-8 - Plus - mirrors.aliyun.com failovermethod=priority baseurl=http://mirrors.aliyun.com/centos/8/centosplus/$basearch/ http://mirrors.aliyuncs.com/centos/8/centosplus/$basearch/ http://mirrors.cloud.aliyuncs.com/centos/8/centosplus/$basearch/ gpgcheck=1 enabled=0 gpgkey=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=1 enabled=0 gpgkey=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 
本文转自：https://blog.csdn.net/Along_168163/article/details/124338818
