镜像地址 http://mirrors.aliyun.com/centos/
1.1 yum源 软件仓库 国外===国内
国内常见的软件仓库地址/yum源
1阿里云 mirrors.aliyun.com 打开网址选择epel---------help
2清华
如何修改mirrors.aliyun.com
a 备份系统当前的yum
[root@oldboyedu45-xy ~]# ls -l /etc/yum.repos.d/
total 24
-rw-r--r--. 1 root root 1991 Mar 28 2017 CentOS-Base.repo
-rw-r--r--. 1 root root 647 Mar 28 2017 CentOS-Debuginfo.repo
-rw-r--r--. 1 root root 289 Mar 28 2017 CentOS-fasttrack.repo
-rw-r--r--. 1 root root 630 Mar 28 2017 CentOS-Media.repo
-rw-r--r--. 1 root root 7989 Mar 28 2017 CentOS-Vault.repo
[root@oldboyedu45-xy ~]#
[root@oldboyedu45-xy ~]# mv /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo.backup
b更改替换系统当前的yum源
[root@oldboyedu45-xy ~]# wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-6.repo
--2018-02-09 09:32:55-- http://mirrors.aliyun.com/repo/Centos-6.repo
Resolving mirrors.aliyun.com... 183.203.23.238, 183.203.23.234, 183.203.23.240, ...
Connecting to mirrors.aliyun.com|183.203.23.238|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 2572 (2.5K) [application/octet-stream]
Saving to: “/etc/yum.repos.d/CentOS-Base.repo”
100%[===================================>] 2,572 --.-K/s in 0s
2018-02-09 09:32:55 (110 MB/s) - “/etc/yum.repos.d/CentOS-Base.repo” saved [2572/2572]
c检查
[root@oldboyedu45-xy ~]# yum repolist
Loaded plugins: fastestmirror, security
Loading mirror speeds from cached hostfile
* base: mirrors.aliyun.com
* extras: mirrors.aliyun.com
* updates: mirrors.aliyun.com
repo id repo name status
base CentOS-6 - Base - mirrors.aliyun.com 6,706
extras CentOS-6 - Extras - mirrors.aliyun.com 47
updates CentOS-6 - Updates - mirrors.aliyun.com 945
repolist: 7,698
[root@oldboyedu45-xy ~]#
系统默认的yum源
base
extras
updates
增加新的yum源，增加些软件仓库 mirrors.aliyun.com
epel
1备份
2下载
wget -O /etc/yum.repos.d/epel.repo http://mirrors.aliyun.com/repo/epel-6.repo
3检查 yum repolist
完成之后检查下：
[root@oldboyedu45-xy ~]# yum repolist
Loaded plugins: fastestmirror, security
Loading mirror speeds from cached hostfile
* base: mirrors.aliyun.com
* epel: mirrors.aliyun.com
* extras: mirrors.aliyun.com
* updates: mirrors.aliyun.com
repo id repo name status
base CentOS-6 - Base - mirrors.aliyun.com 6,706
epel Extra Packages for Enterprise Linux 6 - x86_64 12,457
extras CentOS-6 - Extras - mirrors.aliyun.com 52
updates CentOS-6 - Updates - mirrors.aliyun.com 950
repolist: 20,165
[root@oldboyedu45-xy ~]#