1.首先进入/etc/yum.repos.d/目录下，新建一个repo_bak目录，用于保存系统中原来的repo文件
[root@bogon ~]# cd /etc/yum.repos.d/ [root@bogon yum.repos.d]# mkdir repo_bak [root@bogon yum.repos.d]# mv *.repo repo_bak/
2.在CentOS中配置使用网易和阿里的开源镜像
到网易和阿里开源镜像站点下载系统对应版本的repo文件
[root@bogon yum.repos.d]# wget http://mirrors.aliyun.com/repo/Centos-7.repo [root@bogon yum.repos.d]# wget http://mirrors.163.com/.help/CentOS7-Base-163.repo [root@bogon yum.repos.d]# ls Centos-7.repo CentOS-Base-163.repo repo.bak
或者手动下载repo文件并上传到/etc/yum.repos.d/目录
3.清除系统yum缓存并生成新的yum缓存
1 [root@bogon yum.repos.d]# ls # 列出/etc/yum.repos.d/目录下的文件 2 Centos-7.repo CentOS-Base-163.repo repo.bak 3 4 [root@bogon yum.repos.d]# yum clean all # 清除系统所有的yum缓存 5 Loaded plugins: fastestmirror, langpacks 6 Repository base is listed more than once in the configuration 7 Repository updates is listed more than once in the configuration 8 Repository extras is listed more than once in the configuration 9 Repository centosplus is listed more than once in the configuration 10 Cleaning repos: base extras updates 11 Cleaning up everything 12 Cleaning up list of fastest mirrors 13 14 [root@bogon yum.repos.d]# yum makecache # 生成yum缓存 15 Loaded plugins: fastestmirror, langpacks 16 Repository base is listed more than once in the configuration 17 Repository updates is listed more than once in the configuration 18 Repository extras is listed more than once in the configuration 19 Repository centosplus is listed more than once in the configuration 20 base | 3.6 kB 00:00:00 21 extras | 3.4 kB 00:00:00 22 updates | 3.4 kB 00:00:00 23 (1/12): base/7/x86_64/filelists_db | 6.7 MB 00:00:02 24 (2/12): base/7/x86_64/group_gz | 156 kB 00:00:02 25 (3/12): base/7/x86_64/other_db | 2.5 MB 00:00:01 26 (4/12): base/7/x86_64/primary_db | 5.7 MB 00:00:02 27 (5/12): extras/7/x86_64/prestodelta | 51 kB 00:00:01 28 (6/12): extras/7/x86_64/filelists_db | 494 kB 00:00:02 29 (7/12): extras/7/x86_64/other_db | 86 kB 00:00:00 30 (8/12): extras/7/x86_64/primary_db | 130 kB 00:00:01 31 (9/12): updates/7/x86_64/prestodelta | 406 kB 00:00:01 32 (10/12): updates/7/x86_64/filelists_db | 2.1 MB 00:00:01 33 (11/12): updates/7/x86_64/other_db | 354 kB 00:00:00 34 (12/12): updates/7/x86_64/primary_db | 3.6 MB 00:00:01 35 Determining fastest mirrors 36 Metadata Cache Created
4.安装epel源
1 [root@bogon yum.repos.d]# yum list | grep epel-release 2 Repository base is listed more than once in the configuration 3 Repository updates is listed more than once in the configuration 4 Repository extras is listed more than once in the configuration 5 Repository centosplus is listed more than once in the configuration 6 epel-release.noarch 7-9 extras 7 8 [root@bogon yum.repos.d]# yum install -y epel-release 9 Loaded plugins: fastestmirror, langpacks 10 Repository base is listed more than once in the configuration 11 Repository updates is listed more than once in the configuration 12 Repository extras is listed more than once in the configuration 13 Repository centosplus is listed more than once in the configuration 14 Loading mirror speeds from cached hostfile 15 Resolving Dependencies 16 --> Running transaction check 17 ---> Package epel-release.noarch 0:7-9 will be installed 18 --> Finished Dependency Resolution 19 20 Dependencies Resolved 21 22 ============================================================================================================= 23 Package Arch Version Repository Size 24 ============================================================================================================= 25 Installing: 26 epel-release noarch 7-9 extras 14 k 27 28 Transaction Summary 29 ============================================================================================================= 30 Install 1 Package 31 32 Total download size: 14 k 33 Installed size: 24 k 34 Downloading packages: 35 epel-release-7-9.noarch.rpm | 14 kB 00:00:00 36 Running transaction check 37 Running transaction test 38 Transaction test succeeded 39 Running transaction 40 Installing : epel-release-7-9.noarch 1/1 41 Verifying : epel-release-7-9.noarch 1/1 42 43 Installed: 44 epel-release.noarch 0:7-9 45 46 Complete! 47 [root@bogon yum.repos.d]# ls # epel源安装成功，比原来多了一个epel.repo和epel-testing.repo文件 48 Centos-7.repo CentOS-Base-163.repo epel.repo epel-testing.repo repo.bak
5.使用阿里开源镜像提供的epel源
1 [root@bogon yum.repos.d]# wget -O /etc/yum.repos.d/epel-7.repo http://mirrors.aliyun.com/repo/epel-7.repo # 下载阿里开源镜像的epel源文件 2 --2018-03-08 20:22:14-- http://mirrors.aliyun.com/repo/epel-7.repo 3 Resolving mirrors.aliyun.com (mirrors.aliyun.com)... 183.2.199.237, 113.96.109.95, 113.96.109.93, ... 4 Connecting to mirrors.aliyun.com (mirrors.aliyun.com)|183.2.199.237|:80... connected. 5 HTTP request sent, awaiting response... 200 OK 6 Length: 1084 (1.1K) [application/octet-stream] 7 Saving to: ‘/etc/yum.repos.d/epel-7.repo’ 8 9 100%[=================================================================================================>] 1,084 --.-K/s in 0s 10 11 2018-03-08 20:22:14 (130 MB/s) - ‘/etc/yum.repos.d/epel-7.repo’ saved [1084/1084] 12 13 [root@bogon yum.repos.d]# ls 14 CentOS7-Base-163.repo Centos-7.repo epel-7.repo epel.repo epel-testing.repo repo_bak
6.再次清除系统yum缓存，并重新生成新的yum缓存
1 [root@bogon yum.repos.d]# yum clean all 2 Loaded plugins: fastestmirror, langpacks 3 Repository base is listed more than once in the configuration 4 Repository updates is listed more than once in the configuration 5 Repository extras is listed more than once in the configuration 6 Repository centosplus is listed more than once in the configuration 7 Repository epel is listed more than once in the configuration 8 Repository epel-debuginfo is listed more than once in the configuration 9 Repository epel-source is listed more than once in the configuration 10 Cleaning repos: base epel extras updates 11 Cleaning up everything 12 Cleaning up list of fastest mirrors 13 14 [root@bogon yum.repos.d]# yum makecache 15 Loaded plugins: fastestmirror, langpacks 16 Repository base is listed more than once in the configuration 17 Repository updates is listed more than once in the configuration 18 Repository extras is listed more than once in the configuration 19 Repository centosplus is listed more than once in the configuration 20 Repository epel is listed more than once in the configuration 21 Repository epel-debuginfo is listed more than once in the configuration 22 Repository epel-source is listed more than once in the configuration 23 base | 3.6 kB 00:00:00 24 epel | 4.7 kB 00:00:00 25 extras | 3.4 kB 00:00:00 26 updates | 3.4 kB 00:00:00 27 (1/18): base/7/x86_64/group_gz | 156 kB 00:00:01 28 (2/18): base/7/x86_64/filelists_db | 6.7 MB 00:00:07 29 (3/18): base/7/x86_64/primary_db | 5.7 MB 00:00:06 30 (4/18): epel/x86_64/group_gz | 266 kB 00:00:01 31 (5/18): epel/x86_64/updateinfo | 899 kB 00:00:02 32 (6/18): epel/x86_64/prestodelta | 7.1 kB 00:00:00 33 (7/18): base/7/x86_64/other_db | 2.5 MB 00:00:05 34 (8/18): epel/x86_64/primary_db | 6.3 MB 00:00:04 35 (9/18): extras/7/x86_64/filelists_db | 636 kB 00:00:00 36 (10/18): extras/7/x86_64/primary_db | 166 kB 00:00:00 37 (11/18): extras/7/x86_64/other_db | 108 kB 00:00:00 38 (12/18): extras/7/x86_64/prestodelta | 102 kB 00:00:01 39 (13/18): epel/x86_64/other_db | 3.0 MB 00:00:01 40 (14/18): epel/x86_64/filelists_db | 10 MB 00:00:09 41 (15/18): updates/7/x86_64/filelists_db | 3.5 MB 00:00:02 42 (16/18): updates/7/x86_64/prestodelta | 771 kB 00:00:02 43 (17/18): updates/7/x86_64/other_db | 621 kB 00:00:00 44 (18/18): updates/7/x86_64/primary_db | 6.0 MB 00:00:03 45 Determining fastest mirrors 46 * epel: mirrors.aliyun.com 47 Metadata Cache Created
7.查看系统可用的yum源和所有的yum源
1 [root@bogon yum.repos.d]# yum repolist enabled 2 Loaded plugins: fastestmirror, langpacks 3 Repository base is listed more than once in the configuration 4 Repository updates is listed more than once in the configuration 5 Repository extras is listed more than once in the configuration 6 Repository centosplus is listed more than once in the configuration 7 Repository epel is listed more than once in the configuration 8 Repository epel-debuginfo is listed more than once in the configuration 9 Repository epel-source is listed more than once in the configuration 10 Loading mirror speeds from cached hostfile 11 * epel: mirrors.aliyun.com 12 repo id repo name status 13 base/7/x86_64 CentOS-7 - Base - 163.com 9,591 14 epel/x86_64 Extra Packages for Enterprise Linux 7 - x86_64 12,382 15 extras/7/x86_64 CentOS-7 - Extras - 163.com 390 16 updates/7/x86_64 CentOS-7 - Updates - 163.com 1,941 17 repolist: 24,304 18 19 [root@bogon yum.repos.d]# yum repolist all 20 Loaded plugins: fastestmirror, langpacks 21 Repository base is listed more than once in the configuration 22 Repository updates is listed more than once in the configuration 23 Repository extras is listed more than once in the configuration 24 Repository centosplus is listed more than once in the configuration 25 Repository epel is listed more than once in the configuration 26 Repository epel-debuginfo is listed more than once in the configuration 27 Repository epel-source is listed more than once in the configuration 28 Loading mirror speeds from cached hostfile 29 * epel: mirrors.aliyun.com 30 repo id repo name status 31 base/7/x86_64 CentOS-7 - Base - 163.com enabled: 9,591 32 centosplus/7/x86_64 CentOS-7 - Plus - 163.com disabled 33 contrib/7/x86_64 CentOS-7 - Contrib - mirrors.aliyun.com disabled 34 epel/x86_64 Extra Packages for Enterprise Linux 7 - x86_64 enabled: 12,382 35 epel-debuginfo/x86_64 Extra Packages for Enterprise Linux 7 - x86_64 - Debug disabled 36 epel-source Extra Packages for Enterprise Linux 7 - x86_64 - Source disabled 37 epel-testing/x86_64 Extra Packages for Enterprise Linux 7 - Testing - x86_64 disabled 38 epel-testing-debuginfo/x86_64 Extra Packages for Enterprise Linux 7 - Testing - x86_64 - Debug disabled 39 epel-testing-source/x86_64 Extra Packages for Enterprise Linux 7 - Testing - x86_64 - Source disabled 40 extras/7/x86_64 CentOS-7 - Extras - 163.com enabled: 390 41 updates/7/x86_64 CentOS-7 - Updates - 163.com enabled: 1,941 42 repolist: 24,304
转载自：https://www.cnblogs.com/renpingsheng/p/7845096.html