CentOS7系统配置国内yum源和epel源

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

网易开源镜像站

阿里开源镜像站

3.清除系统yum缓存并生成新的yum缓存

 [root@bogon yum.repos.d]# ls # 列出/etc/yum.repos.d/目录下的文件 Centos-7.repo CentOS-Base-163.repo repo.bak [root@bogon yum.repos.d]# yum clean all # 清除系统所有的yum缓存 Loaded plugins: fastestmirror, langpacks Repository base is listed more than once in the configuration Repository updates is listed more than once in the configuration Repository extras is listed more than once in the configuration Repository centosplus is listed more than once in the configuration Cleaning repos: base extras updates Cleaning up everything Cleaning up list of fastest mirrors [root@bogon yum.repos.d]# yum makecache # 生成yum缓存 Loaded plugins: fastestmirror, langpacks Repository base is listed more than once in the configuration Repository updates is listed more than once in the configuration Repository extras is listed more than once in the configuration Repository centosplus is listed more than once in the configuration 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/filelists_db | 6.7 MB 00:00:02 (2/12): base/7/x86_64/group_gz | 156 kB 00:00:02 (3/12): base/7/x86_64/other_db | 2.5 MB 00:00:01 (4/12): base/7/x86_64/primary_db | 5.7 MB 00:00:02 (5/12): extras/7/x86_64/prestodelta | 51 kB 00:00:01 (6/12): extras/7/x86_64/filelists_db | 494 kB 00:00:02 (7/12): extras/7/x86_64/other_db | 86 kB 00:00:00 (8/12): extras/7/x86_64/primary_db | 130 kB 00:00:01 (9/12): updates/7/x86_64/prestodelta | 406 kB 00:00:01 (10/12): updates/7/x86_64/filelists_db | 2.1 MB 00:00:01 (11/12): updates/7/x86_64/other_db | 354 kB 00:00:00 (12/12): updates/7/x86_64/primary_db | 3.6 MB 00:00:01 Determining fastest mirrors Metadata Cache Created

4.安装epel源

 [root@bogon yum.repos.d]# yum list | grep epel-release Repository base is listed more than once in the configuration Repository updates is listed more than once in the configuration Repository extras is listed more than once in the configuration Repository centosplus is listed more than once in the configuration epel-release.noarch 7-9 extras [root@bogon yum.repos.d]# yum install -y epel-release Loaded plugins: fastestmirror, langpacks Repository base is listed more than once in the configuration Repository updates is listed more than once in the configuration Repository extras is listed more than once in the configuration Repository centosplus is listed more than once in the configuration Loading mirror speeds from cached hostfile 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 # epel源安装成功，比原来多了一个epel.repo和epel-testing.repo文件 Centos-7.repo CentOS-Base-163.repo epel.repo epel-testing.repo repo.bak

5.再次清除系统yum缓存，并重新生成新的yum缓存

 [root@bogon yum.repos.d]# yum clean all Loaded plugins: fastestmirror, langpacks Repository base is listed more than once in the configuration Repository updates is listed more than once in the configuration Repository extras is listed more than once in the configuration Repository centosplus is listed more than once in the configuration Cleaning repos: base epel extras updates Cleaning up everything Cleaning up list of fastest mirrors [root@bogon yum.repos.d]# yum makecache Loaded plugins: fastestmirror, langpacks Repository base is listed more than once in the configuration Repository updates is listed more than once in the configuration Repository extras is listed more than once in the configuration Repository centosplus is listed more than once in the configuration base | 3.6 kB 00:00:00 epel/x86_64/metalink | 6.0 kB 00:00:00 epel | 4.7 kB 00:00:00 extras | 3.4 kB 00:00:00 updates | 3.4 kB 00:00:00 (1/18): base/7/x86_64/filelists_db | 6.7 MB 00:00:02 (2/18): base/7/x86_64/primary_db | 5.7 MB 00:00:01 (3/18): base/7/x86_64/other_db | 2.5 MB 00:00:00 (4/18): base/7/x86_64/group_gz | 156 kB 00:00:03 (5/18): epel/x86_64/group_gz | 261 kB 00:00:02 (6/18): epel/x86_64/updateinfo | 848 kB 00:00:05 (7/18): extras/7/x86_64/filelists_db | 494 kB 00:00:01 (8/18): extras/7/x86_64/prestodelta | 51 kB 00:00:00 (9/18): extras/7/x86_64/primary_db | 130 kB 00:00:00 (10/18): extras/7/x86_64/other_db | 86 kB 00:00:00 (11/18): updates/7/x86_64/filelists_db | 2.1 MB 00:00:01 (12/18): updates/7/x86_64/prestodelta | 406 kB 00:00:00 (13/18): updates/7/x86_64/primary_db | 3.6 MB 00:00:01 (14/18): updates/7/x86_64/other_db | 354 kB 00:00:00 (15/18): epel/x86_64/primary_db | 6.1 MB 00:00:11 (16/18): epel/x86_64/filelists_db | 9.8 MB 00:00:14 (17/18): epel/x86_64/prestodelta | 884 B 00:00:00 (18/18): epel/x86_64/other_db | 2.9 MB 00:01:15 Determining fastest mirrors * epel: mirrors.ustc.edu.cn Metadata Cache Created

6.查看系统可用的yum源和所有的yum源

 [root@bogon yum.repos.d]# yum repolist enabled # 查看系统可用的yum源 Loaded plugins: fastestmirror, langpacks Repository base is listed more than once in the configuration Repository updates is listed more than once in the configuration Repository extras is listed more than once in the configuration Repository centosplus is listed more than once in the configuration Loading mirror speeds from cached hostfile * epel: mirrors.ustc.edu.cn repo id repo name status base/7/x86_64 CentOS-7 - Base - 163.com 9,591 epel/x86_64 Extra Packages for Enterprise Linux 7 - x86_64 12,071 extras/7/x86_64 CentOS-7 - Extras - 163.com 282 updates/7/x86_64 CentOS-7 - Updates - 163.com 1,084 repolist: 23,028 [root@bogon yum.repos.d]# yum repolist all # 查看系统所有的yum源 Loaded plugins: fastestmirror, langpacks Repository base is listed more than once in the configuration Repository updates is listed more than once in the configuration Repository extras is listed more than once in the configuration Repository centosplus is listed more than once in the configuration Loading mirror speeds from cached hostfile * epel: mirrors.ustc.edu.cn repo id repo name status base/7/x86_64 CentOS-7 - Base - 163.com enabled: 9,591 centosplus/7/x86_64 CentOS-7 - Plus - 163.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: 12,071 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 - Debu disabled epel-testing-source/x86_64 Extra Packages for Enterprise Linux 7 - Testing - x86_64 - Sour disabled extras/7/x86_64 CentOS-7 - Extras - 163.com enabled: 282 updates/7/x86_64 CentOS-7 - Updates - 163.com enabled: 1,084 repolist: 23,028