centos7替換yum源為阿里雲

1.進入yum.repos.d目錄

cd /etc/yum.repos.d/

2.備份當前目錄yum.repos.d下的所有檔案,然後刪除

3.安裝阿里yum源

curl -o /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo

vi CentOS-Base.repo
:%s/$releasever/7/g
:wq

儲存

4.清除舊的yum快取

yum clean all

5.生成新的快取

yum makecache

6.檢查

yum repolist