如何在Yum中设置和同步本地源

情景： 为内网主机搭建 yum 源，且 yum 源同步 外网的源服务器。

同步 yum 源

同步本地 yum 源有三种方式

1、 wget 方式

2、 reposync 方式

3、 raync 方式 （源站点需要支持 rsync）

#  yum 源的同步站点
#  http://centos.ustc.edu.cn/centos/

# 查看源列表
[root@WJ110 yum]# rsync --list-only rsync://rsync.mirrors.ustc.edu.cn/centos/6/os/x86_64/
 _______________________________________________________________
|         University of Science and Technology of China         |
|           Open Source Mirror  (mirrors.ustc.edu.cn)           |
|===============================================================|
|                                                               |
| Debian primary mirror in China mainland (ftp.cn.debian.org),  |
|     also mirroring a great many OSS projects & Linux distros. |
|                                                               |
| Currently we don\'t limit speed. To prevent overload, Each IP  |
| is only allowed to start upto 2 concurrent rsync connections. |
|                                                               |
| This site also provides http/https/ftp access.                |
|                                                               |
| Supported by USTC Network Information Center                  |
|          and USTC Linux User Group (http://lug.ustc.edu.cn/). |
|                                                               |
|    Sync Status:  https://mirrors.ustc.edu.cn/status/          |
|           News:  https://servers.ustclug.org/                 |
|        Contact:  lug@ustc.edu.cn                              |
|                                                               |
|_______________________________________________________________|


drwxrwxr-x         536 2017/09/20 01:35:53 .
-rw-r--r--          33 2017/03/29 02:19:52 .discinfo
-rw-r--r--         364 2017/03/29 02:19:49 .treeinfo
-rw-r--r--          14 2017/03/29 02:05:42 CentOS_BuildTag
-rw-rw-r--         212 2013/11/27 17:36:04 EULA
-rw-rw-r--       18009 2013/11/27 17:36:04 GPL
-rw-rw-r--        1359 2017/03/28 23:53:39 RELEASE-NOTES-en-US.html
-rw-rw-r--        1706 2013/11/27 17:36:04 RPM-GPG-KEY-CentOS-6
-rw-rw-r--        1730 2013/11/27 17:36:04 RPM-GPG-KEY-CentOS-Debug-6
-rw-rw-r--        1730 2013/11/27 17:36:04 RPM-GPG-KEY-CentOS-Security-6
-rw-rw-r--        1734 2013/11/27 17:36:04 RPM-GPG-KEY-CentOS-Testing-6
drwxr-xr-x          72 2017/03/29 02:19:05 EFI
drwxr-xr-x      383320 2017/09/20 01:40:29 Packages
drwxr-xr-x         192 2017/04/03 18:30:12 images
drwxr-xr-x         312 2017/04/03 18:30:13 isolinux
drwxr-xr-x         928 2017/04/06 01:02:54 repodata

# 同步到本地
[root@WJ110 yum]# rsync -avrt rsync://rsync.mirrors.ustc.edu.cn/centos/6/os/x86_64/  /data/yum/centos/6/os/x86_64/
[root@WJ110 yum]# rsync -avrt rsync://rsync.mirrors.ustc.edu.cn/centos/6/extras/x86_64/  /data/yum/centos/6/extras/x86_64/
[root@WJ110 yum]# rsync -avrt rsync://rsync.mirrors.ustc.edu.cn/centos/6/updates/x86_64/  /data/yum/centos/6/updates/x86_64/
[root@WJ110 yum]# rsync -avrt rsync://rsync.mirrors.ustc.edu.cn/epel/6/x86_64/  /data/yum/epel/6/x86_64/
...
...

配置 nginx

注： 打开目录浏览功能

    server {
        listen       80;
        server_name  localhost;

        location / {
            root   /data/yum;
            autoindex on;   # 打开目录浏览功能
            autoindex_exact_size off;  # 显示出文件的大概大小，单位是kB或者MB或者GB
            autoindex_localtime on; # 显示的文件时间为文件的服务器时间
        }
    }

重启 nginx，访问地址，可以访问到 /data/yum/ 下的目录列表

修改 yum.repo 文件

只需修改地址部分即可，如下：

[base]
name=CentOS-6 - Base - local.com
baseurl=http://172.18.50.110/centos/6/os/$basearch/
#mirrorlist=http://mirrorlist.centos.org/?release=6&arch=$basearch&repo=os
gpgcheck=1
gpgkey=http://172.18.50.110/centos/RPM-GPG-KEY-CentOS-6

#released updates 
[updates]
name=CentOS-6 - Updates - local.com
baseurl=http://172.18.50.110/centos/6/updates/$basearch/
#mirrorlist=http://mirrorlist.centos.org/?release=6&arch=$basearch&repo=updates
gpgcheck=1
gpgkey=http://172.18.50.110/centos/RPM-GPG-KEY-CentOS-6

#additional packages that may be useful
[extras]
name=CentOS-6 - Extras - local.com
baseurl=http://172.18.50.110/centos/6/extras/$basearch/
#mirrorlist=http://mirrorlist.centos.org/?release=6&arch=$basearch&repo=extras
gpgcheck=1
gpgkey=http://172.18.50.110/centos/RPM-GPG-KEY-CentOS-6
...
...
...