很多時候為了加速自己內部的rpm包安裝速度，都會搭建自己的yum源倉庫，而使用系統光盤自帶的源，由於軟件版本比較落後，所以不太適用，而大家都在用的阿裏倉庫比較好用，所以就想到了把阿裏倉庫的rpm全部拉到本地，並做yum倉庫的定時更新。這樣既能保證軟件包是最新的，也能保證軟件的安裝速度。那麽下面來具體實施，搭建自己的yum本地倉庫，並定時從阿裏倉庫同步過來。

第一步：下載阿裏鏡像的repo安裝包，centos6就下載6的，7的就下載7的地址：https://mirrors.aliyun.com/repo/

我們以centos7的鏡像為例

1. cd /etc/yum.repos.d/
3. mkdir bak
5. mv Centos* bak #將系統自帶的源備份到bak目錄下
7. wget https://mirrors.aliyun.com/repo/Centos-7.repo
9. cat Centos-7.repo
11. # CentOS-Base.repo
12. #
13. # The mirror system uses the connecting IP address of the client and the
14. # update status of each mirror to pick mirrors that are updated to and
15. # geographically close to the client. You should use this for CentOS updates
16. # unless you are manually picking other mirrors.
17. #
18. # If the mirrorlist= does not work for you, as a fall back you can try the
19. # remarked out baseurl= line instead.
20. #
21. #
23. [base]
24. name=CentOS-$releasever - Base - mirrors.aliyun.com
25. failovermethod=priority
26. baseurl=http://mirrors.aliyun.com/centos/$releasever/os/$basearch/
27. http://mirrors.aliyuncs.com/centos/$releasever/os/$basearch/
28. #mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=os
29. gpgcheck=1
30. gpgkey=http://mirrors.aliyun.com/centos/RPM-GPG-KEY-CentOS-7
32. #released updates
33. [updates]
34. name=CentOS-$releasever - Updates - mirrors.aliyun.com
35. failovermethod=priority
36. baseurl=http://mirrors.aliyun.com/centos/$releasever/updates/$basearch/
37. http://mirrors.aliyuncs.com/centos/$releasever/updates/$basearch/
38. #mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=updates
39. gpgcheck=1
40. gpgkey=http://mirrors.aliyun.com/centos/RPM-GPG-KEY-CentOS-7
42. #additional packages that may be useful
43. [extras]
44. name=CentOS-$releasever - Extras - mirrors.aliyun.com
45. failovermethod=priority
46. baseurl=http://mirrors.aliyun.com/centos/$releasever/extras/$basearch/
47. http://mirrors.aliyuncs.com/centos/$releasever/extras/$basearch/
48. #mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=extras
49. gpgcheck=1
50. gpgkey=http://mirrors.aliyun.com/centos/RPM-GPG-KEY-CentOS-7
52. #additional packages that extend functionality of existing packages
53. [centosplus]
54. name=CentOS-$releasever - Plus - mirrors.aliyun.com
55. failovermethod=priority
56. baseurl=http://mirrors.aliyun.com/centos/$releasever/centosplus/$basearch/
57. http://mirrors.aliyuncs.com/centos/$releasever/centosplus/$basearch/
58. #mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=centosplus
59. gpgcheck=1
60. enabled=0
61. gpgkey=http://mirrors.aliyun.com/centos/RPM-GPG-KEY-CentOS-7
63. #contrib - packages by Centos Users
64. [contrib]
65. name=CentOS-$releasever - Contrib - mirrors.aliyun.com
66. failovermethod=priority
67. baseurl=http://mirrors.aliyun.com/centos/$releasever/contrib/$basearch/
68. http://mirrors.aliyuncs.com/centos/$releasever/contrib/$basearch/
69. #mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=contrib
70. gpgcheck=1
71. enabled=0
72. gpgkey=http://mirrors.aliyun.com/centos/RPM-GPG-KEY-CentOS-7

已經配置好的阿裏倉庫

1. yum repolist #查看阿裏的可用倉庫，有啟用的表示已經成功了
3. 從阿裏服務器將rpm同步到本地需要兩個rpm軟件createrepo 和 yum-utils
5. yum install createrepo yum-utils -y #yum安裝這兩個包
6. mkdir -p /mirrors/Packege #創建rpm包的存放目錄
7. reposync -r base -p /mirrors/Packege #將已經配置好的阿裏倉庫鏡像內的rpm包拉到本地,b ase為本地已經配置好的倉庫名，可以用yum repolist查看到
8. createrepo -pdo /mirrors/ /mirrors/Packege #創建repo數據庫

1. vim /cron/repository.sh #編寫同步腳本
2. reposync -r base -p /mirrors/Packege -d #來刪除本地老舊
3. reposync -r base -p /mirrors/Packege
5. crontab -e #添加定時任務
6. 0 0 1 * * sh /cron/repository.sh #每月1日0時更新yum倉庫

創建yum本地倉庫，將阿裏倉庫同步到本地，並定時更新