【阿里云镜像】更改阿里巴巴开源镜像站镜像源之——CentOS 7

为了下载速度快，每次都要做好镜像的更改，既然次数多，懒得每次还来查资料，就自己写一篇博客加强自己的记忆。

阿里巴巴 OPSX 开源镜像站，提供 CentOS、Debian、Ubuntu、 Fedora、Arch Linux、Gentoo、openSUSE、Scientific Linux 等主流发行版的软件源镜像。为阿里云和互联网用户提供免费高速的一站式镜像服务

镜像站官网：阿里巴巴镜像站链接

参考链接：CentOS镜像

CentOS，是基于 Red Hat Linux 提供的可自由使用源代码的企业级 Linux 发行版本；是一个稳定，可预测，可管理和可复制的免费企业级计算平台。

镜像下载地址：
https://mirrors.aliyun.com/centos/
https://mirrors.aliyun.com/centos-vault/

1、备份自带的YUM源

mv /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo.backup

2、下载新的 CentOS-Base.repo 到 /etc/yum.repos.d/

CentOS 7版本：

wget -O /etc/yum.repos.d/CentOS-Base.repo https://mirrors.aliyun.com/repo/Centos-7.repo

或者

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

[root@nfs ~]# curl -o /etc/yum.repos.d/CentOS-Base.repo https://mirrors.aliyun.com/repo/Centos-7.repo
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100  2523  100  2523    0     0   3379      0 --:--:-- --:--:-- --:--:--  3377

3、运行 yum makecache 生成缓存

yum makecache

[root@nfs ~]# yum makecache
已加载插件：fastestmirror
Loading mirror speeds from cached hostfile
 * base: mirrors.aliyun.com
 * extras: mirrors.aliyun.com
 * updates: mirrors.aliyun.com
base                                                                                              | 3.6 kB  00:00:00     
extras                                                                                            | 2.9 kB  00:00:00     
updates                                                                                           | 2.9 kB  00:00:00     
base/7/x86_64/primary_db       FAILED                                                  ]  0.0 B/s |  37 kB  --:--:-- ETA 
http://mirrors.cloud.aliyuncs.com/centos/7/os/x86_64/repodata/6d0c3a488c282fe537794b5946b01e28c7f44db79097bb06826e1c0c88bad5ef-primary.sqlite.bz2: [Errno 14] curl#6 - "Could not resolve host: mirrors.cloud.aliyuncs.com; Unknown error"
正在尝试其它镜像。
(1/10): base/7/x86_64/group_gz                                                                    | 153 kB  00:00:01     
(2/10): extras/7/x86_64/other_db                                                                  | 149 kB  00:00:01     
(3/10): extras/7/x86_64/filelists_db                                                              | 276 kB  00:00:03     
base/7/x86_64/filelists_db     FAILED                                                  ] 235 kB/s | 5.1 MB  00:03:11 ETA 
http://mirrors.aliyuncs.com/centos/7/os/x86_64/repodata/d6d94c7d406fe7ad4902a97104b39a0d8299451832a97f31d71653ba982c955b-filelists.sqlite.bz2: [Errno 14] curl#7 - "Failed connect to mirrors.aliyuncs.com:80; Connection refused"
正在尝试其它镜像。
extras/7/x86_64/primary_db     FAILED                                                  ] 243 kB/s | 5.3 MB  00:03:04 ETA 
http://mirrors.aliyuncs.com/centos/7/extras/x86_64/repodata/511a574b4c3f907f9acfe5603566958fb6f09137292c5cd5d5d57c298864790f-primary.sqlite.bz2: [Errno 14] curl#7 - "Failed connect to mirrors.aliyuncs.com:80; Connection refused"
正在尝试其它镜像。
(4/10): base/7/x86_64/other_db                                                                    | 2.6 MB  00:00:22     
updates/7/x86_64/primary_db    FAILED                                                  ] 320 kB/s | 6.4 MB  00:02:16 ETA 
http://mirrors.aliyuncs.com/centos/7/updates/x86_64/repodata/bc8950506fb13622afd9eb93c811884b6e2e7570afd5fac946f708ac01ae0cff-primary.sqlite.bz2: [Errno 14] curl#7 - "Failed connect to mirrors.aliyuncs.com:80; Connection refused"
正在尝试其它镜像。
(5/10): extras/7/x86_64/primary_db                                                                | 249 kB  00:00:02     
(6/10): updates/7/x86_64/other_db                                                                 | 1.3 MB  00:00:12     
(7/10): base/7/x86_64/primary_db                                                                  | 6.1 MB  00:00:53     
(8/10): base/7/x86_64/filelists_db                                                                | 7.2 MB  00:01:02     
(9/10): updates/7/x86_64/filelists_db                                                             |  11 MB  00:01:36     
(10/10): updates/7/x86_64/primary_db                                                                  |  20 MB  00:02:59     
元数据缓存已建立

放点耐心，稍等几分钟~

4、查看更换的阿里云镜像的仓库是否生效。

yum clean all
yum repolist

[root@nfs ~]# yum clean all
已加载插件：fastestmirror
正在清理软件源： base extras updates
Cleaning up list of fastest mirrors
[root@nfs ~]# yum repolist
已加载插件：fastestmirror
Determining fastest mirrors
 * base: mirrors.aliyun.com
 * extras: mirrors.aliyun.com
 * updates: mirrors.aliyun.com
base                                                                                                  | 3.6 kB  00:00:00     
extras                                                                                                | 2.9 kB  00:00:00     
updates                                                                                               | 2.9 kB  00:00:00     
(1/4): base/7/x86_64/group_gz                                                                         | 153 kB  00:00:01     
(2/4): extras/7/x86_64/primary_db                                                                     | 249 kB  00:00:02     
(3/4): base/7/x86_64/primary_db                                                                       | 6.1 MB  00:00:51     
(4/4): updates/7/x86_64/primary_db                                                                    |  20 MB  00:02:58     
源标识                                          源名称                                                                 状态
base/7/x86_64                                   CentOS-7 - Base - mirrors.aliyun.com                                   10,072
extras/7/x86_64                                 CentOS-7 - Extras - mirrors.aliyun.com                                    515
updates/7/x86_64                                CentOS-7 - Updates - mirrors.aliyun.com                                 4,839
repolist: 15,426
[root@nfs ~]# 

更换阿里云镜像站——CentOS镜像生效。