CentOS7默认的yum源更换为阿里云yum源

参考此博文连接 https://blog.csdn.net/aa867734398/article/details/107968565

1、首先备份/etc/yum.repos.d/目录下默认的yum源

#备份CentOS-Base.repo为CentOS-Base.repo.backup
[root@localhost ~]# mv /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo.backup

2、下载CentOS7环境新的CentOS-Base.repo 到/etc/yum.repos.d/目录下

[root@localhost ~]# wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo

3、添加epel-7.repo到/etc/yum.repos.d/目录下

[root@localhost ~]# wget -O /etc/yum.repos.d/epel.repo http://mirrors.aliyun.com/repo/epel-7.repo

4、清理yum缓存

[root@localhost ~]# yum clean all

5、重新生成新的yum缓存

[root@localhost ~]# yum makecache
已加载插件：fastestmirror, langpacks
Loading mirror speeds from cached hostfile
 * base: mirrors.aliyun.com
 * extras: mirrors.aliyun.com
 * updates: mirrors.aliyun.com
base                                                     | 3.6 kB     00:00
epel                                                     | 4.7 kB     00:00
extras                                                   | 2.9 kB     00:00
updates                                                  | 2.9 kB     00:00
(1/9): epel/x86_64/prestodelta                             |  727 B   00:00
(2/9): extras/7/x86_64/filelists_db                        | 235 kB   00:02
(3/9): epel/x86_64/other_db                                | 3.4 MB   00:05
(4/9): extras/7/x86_64/other_db                            | 143 kB   00:02
(5/9): base/7/x86_64/filelists_db                          | 7.2 MB   00:07
(6/9): updates/7/x86_64/other_db                           | 680 kB   00:01
(7/9): base/7/x86_64/other_db                              | 2.6 MB   00:07
(8/9): updates/7/x86_64/filelists_db                       | 5.1 MB   00:03
(9/9): epel/x86_64/filelists_db                            |  12 MB   00:10
元数据缓存已建立
[root@localhost ~]#