CentOS7配置阿里云yum源和EPEL源

1、备份

[root@bogon ~]# cd /etc/yum.repos.d/
[root@bogon yum.repos.d]# mkdir repo_bak
[root@bogon yum.repos.d]# mv *.repo repo_bak/
[root@bogon yum.repos.d]# ls
repo_bak

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

[root@bogon yum.repos.d]# wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo
--2018-02-09 16:33:46--  http://mirrors.aliyun.com/repo/Centos-7.repo
Resolving mirrors.aliyun.com (mirrors.aliyun.com)... 124.14.2.234, 124.14.2.235, 124.14.2.217, ...
Connecting to mirrors.aliyun.com (mirrors.aliyun.com)|124.14.2.234|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 2573 (2.5K) [application/octet-stream]
Saving to: ‘/etc/yum.repos.d/CentOS-Base.repo’

100%[========================================================================================>] 2,573 --.-K/s in 0s

2018-02-09 16:33:47 (182 MB/s) - ‘/etc/yum.repos.d/CentOS-Base.repo’ saved [2573/2573]

[root@bogon yum.repos.d]# ls
CentOS-Base.repo repo_bak

3、之后运行yum clean all 清除缓存，运行 yum makecache 生成新的缓存

[root@bogon yum.repos.d]# yum clean all
Loaded plugins: fastestmirror
Cleaning repos: base extras updates
Cleaning up everything
Maybe you want: rm -rf /var/cache/yum, to also free up space taken by orphaned data from disabled or removed repos
Cleaning up list of fastest mirrors
[root@bogon yum.repos.d]# yum makecache
Loaded plugins: fastestmirror
base                                                                                                       | 3.6 kB  00:00:00
extras                                                                                                     | 3.4 kB  00:00:00
updates                                                                                                    | 3.4 kB  00:00:00
(1/12): base/7/x86_64/group_gz                                                                             | 156 kB  00:00:00
(2/12): extras/7/x86_64/filelists_db                                                                       | 636 kB  00:00:07
(3/12): extras/7/x86_64/primary_db                                                                         | 166 kB  00:00:02

安装EPEL（Extra Packages for Enterprise Linux ）源

4、安装EPEL源

[root@bogon yum.repos.d]# yum list | grep epel-release
epel-release.noarch                         7-9                        extras
[root@bogon yum.repos.d]# yum install -y epel-release
Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile* base: mirrors.aliyun.com* extras: mirrors.aliyun.com* updates: mirrors.aliyun.com
Resolving Dependencies
--> Running transaction check
---> Package epel-release.noarch 0:7-9 will be installed
--> Finished Dependency Resolution

Dependencies Resolved

Package Arch Version Repository Size

Installing:
epel-release noarch 7-9 extras 14 k

Transaction Summary
==================================================================================================================================
Install 1 Package

Total download size: 14 k
Installed size: 24 k
Downloading packages:
epel-release-7-9.noarch.rpm | 14 kB 00:00:00
Running transaction check
Running transaction test
Transaction test succeeded
Running transaction
Installing : epel-release-7-9.noarch 1/1
Verifying : epel-release-7-9.noarch 1/1

Installed:
epel-release.noarch 0:7-9

Complete!
[root@bogon yum.repos.d]# ls #多了epel.repo和epel-testing.repo
CentOS-Base.repo epel.repo epel-testing.repo repo_bak

5、再次运行yum clean all 清除缓存，运行 yum makecache 生成新的缓存

6、查看启用的yum源和所有的yum源

[root@bogon yum.repos.d]# yum repolist enabled               #查看启用的仓库
Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile* base: mirrors.aliyun.com* epel: mirrors.ustc.edu.cn* extras: mirrors.aliyun.com* updates: mirrors.aliyun.com
repo id                                        repo name                                                                    status
base/7/x86_64                                  CentOS-7 - Base - mirrors.aliyun.com                                          9,591
epel/x86_64                                    Extra Packages for Enterprise Linux 7 - x86_64                               12,277
extras/7/x86_64                                CentOS-7 - Extras - mirrors.aliyun.com                                          388
updates/7/x86_64                               CentOS-7 - Updates - mirrors.aliyun.com                                       1,929
repolist: 24,185
[root@bogon yum.repos.d]# yum repolist all                          #查看所有的仓库
Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile* base: mirrors.aliyun.com* epel: mirrors.ustc.edu.cn* extras: mirrors.aliyun.com* updates: mirrors.aliyun.com
repo id                                repo name                                                                   status
base/7/x86_64                          CentOS-7 - Base - mirrors.aliyun.com                                        enabled:  9,591
centosplus/7/x86_64                    CentOS-7 - Plus - mirrors.aliyun.com                                        disabled
contrib/7/x86_64                       CentOS-7 - Contrib - mirrors.aliyun.com                                     disabled
epel/x86_64                            Extra Packages for Enterprise Linux 7 - x86_64                              enabled: 12,277
epel-debuginfo/x86_64                  Extra Packages for Enterprise Linux 7 - x86_64 - Debug                      disabled
epel-source/x86_64                     Extra Packages for Enterprise Linux 7 - x86_64 - Source                     disabled
epel-testing/x86_64                    Extra Packages for Enterprise Linux 7 - Testing - x86_64                    disabled
epel-testing-debuginfo/x86_64          Extra Packages for Enterprise Linux 7 - Testing - x86_64 - Debug            disabled
epel-testing-source/x86_64             Extra Packages for Enterprise Linux 7 - Testing - x86_64 - Source           disabled
extras/7/x86_64                        CentOS-7 - Extras - mirrors.aliyun.com                                      enabled:    388
updates/7/x86_64                       CentOS-7 - Updates - mirrors.aliyun.com                                     enabled:  1,929
repolist: 24,185