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
[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
[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
