- centos7

修改

1.备份

cd /etc/yum.repos.d/
sudo cp CentOS-Base.repo CentOS-Base.repo.bak

2.下载

wget  http://mirrors.aliyun.com/repo/Centos-7.repo

3.替换

mv Centos-7.repo CentOs-Base.repo

4.更新

yum clean all
yum makecache
yum update

- centos8

阿里yum地址

http://mirrors.aliyun.com/centos/

修改

1.备份

cd /etc/yum.repos.d/
sudo cp CentOS-AppStream.repo CentOS-AppStream.repo.bak
sudo cp CentOS-Base.repo CentOS-Base.repo.bak
sudo cp CentOS-Extras.repo CentOS-Extras.repo.bak

2.修改三个文件

vim CentOS-AppStream.repo

#mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=AppStream&infra=$infra
baseurl=http://mirrors.aliyun.com/centos/$releasever/AppStream/$basearch/os/

vim CentOS-Base.repo

#mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=BaseOS&infra=$infra
baseurl=http://mirrors.aliyun.com/centos/$releasever/BaseOS/$basearch/os/

vim CentOS-Extras.repo

#mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=extras&infra=$infra
baseurl=http://mirrors.aliyun.com/centos/$releasever/extras/$basearch/os/

3.更新

yum update

- 安装epel源

yum install epel-release -y
yum clean all
yum makecache