primary prim 3.2 packages oldboy roc ack https gin

Yum 源

Yum repolist

[root@oldboyedu50 ~]# yum repolist 查看當前的yun源
Loaded plugins: fastestmirror, security
Loading mirror speeds from cached hostfile
base: mirrors.aliyun.comm
updates: mirrors.ali
extras: mirrors.aliyun.co
yun.com
epel | 3.2 kB 00:00

epel/primary | 3.2 MB 00:09
epel 12518/12518
repo id repo name status
base CentOS-6 - Base - mirrors.aliyun.com 6,713
epel Extra Packages for Enterprise Linux 6 - x8664 12,518
extras CentOS-6 - Extras - mirrors.aliyun.com 31
updates CentOS-6 - Updates - mirrors.aliyun.com 45
repolist: 19,307 軟件包數量

2.1 把系統默認的yum源 改為阿裏雲（從阿裏雲裏下載軟件）
https://opsx.alibaba.com 網址

備份：mv /etc/yum.repos.d/CentOS-Base.repo系統 /etc/yum.repos.d/CentOS-Base.repo.backup
2.2 配置CentOS6yum源 ：wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-6.repo
/etc/yum.repos.d/CentOS-Base.repo系統默認yun的配置文件base extras updates

diff CentOS-Base.repo CentOS-Base.repo.backup
vimdiff CentOS-Base.repo CentOS-Base.repo.backup (vimdiff為了兩個對比)

2.3 配置epel:
wget -O /etc/yum.repos.d/epel.repo http://mirrors.aliyun.com/repo/epel-6.repo
[root@oldboyedu50 yum.repos.d]# yum repolist
Loaded plugins: fastestmirror, security
Loading mirror speeds from cached hostfile
base: mirrors.aliyun.com
extras: mirrors.aliyun.com
updates: mirrors.aliyun.com
epel | 3.2 kB 00:00
repo id repo name status
base CentOS-6 - Base - mirrors.aliyun.com 6,713
epel Extra Packages for Enterprise Linux 12,518
extras CentOS-6 - Extras - mirrors.aliyun.c 31
updates CentOS-6 - Updates - mirrors.aliyun. 45
repolist: 19,307增加後的

2.4 清華：centos點擊問號
https://mirrors.tuna.tsinghua.edu.cn/help/centos/
yum clean all #清空yum緩存

把系統默認的yum源改為阿裏雲（從阿裏雲裏下載軟件）