先说CentOS的
1、备份
[root@harry ~]# cd /etc/yum.repos.d/ [root@harry 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@harry
[root@ 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
安装EPEL(Extra Packages for Enterprise Linux )源
4、安装EPEL源
[root@ 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@harry 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
由于Red Hat Enterprise Linux7的更新包只对注册的用户生效,所以需要自己手动改成Centos的更新包,Centos几乎和和Redhat是一样的,所以无需担心软件包的兼容问题。
首先查看redhat7系统本身安装的yum软件包 ,redhat本身安装了6个关于yum的软件包,我们需要把它给卸载!
rpm -qa | grep yum
卸载这些软件包的指令
rpm -qa | grep yum | xargs rpm -e --nodeps #不检查依赖关系,直接卸载
然后重新安装centos的yum软件包 ,把软件包放到统一的文件夹里,然后安装,安装完后可以看到centos安装包已经安装好。这里我看其他很多人的教程给的centos的yum的安装包的链接都是不可用了,后来我自己到国外的网站找了几个可用的安装包。
链接: https://pan.baidu.com/s/10IrBjM5j_TJT0Qc2aW64Cg 提取码: i4pe
rpm -ivh * # 安装该目录下所有rpm包
rpm -qa | grep yum # 查询是否安装好
安装完centos的yum软件包后,就可以去修改 /etc/yum.repos.d/ 下的文件了,这里和配置本地yum源修改一样
[base]
name= yum repo
baseurl=http://mirrors.aliyun.com/centos/7/os/$basearch/
enabled=1
gpgcheck=0
配置完保存退出,清除yum缓存,查看yum中的包有多少,这里可以看到有11056个,比本地yum源的四千多个多了不少!