更换Red Hat Enterprise Linux 7 64位的yum为centos的版本

Posted 2020-09-20 张小贱1987

• 查看redhat原有的yum包有哪些：

[[email protected] ~]# rpm -qa|grep yum

yum-utils-1.1.31-24.el7.noarch

yum-langpacks-0.4.2-3.el7.noarch

yum-metadata-parser-1.1.4-10.el7.x86_64

yum-rhn-plugin-2.0.1-4.el7.noarch

PackageKit-yum-0.8.9-11.el7.x86_64

yum-3.4.3-118.el7.noarch

• 尝试使用xargs来删除这些包

[[email protected] ~]# rpm -qa|grep yum|xargs rmp -e --nodeps

xargs: rmp: 没有那个文件或目录

• 没有xargs 一个一个删除

[[email protected] ~]# rpm -qa|grep xargs

[[email protected] ~]# rpm -e --nodeps yum-utils-1.1.31-24.el7.noarch

[[email protected] ~]# rpm -e --nodeps yum-langpacks-0.4.2-3.el7.noarch

[[email protected] ~]# rpm -e --nodeps yum-metadata-parser-1.1.4-10.el7.x86_64

[[email protected] ~]# rpm -e --nodeps yum-rhn-plugin-2.0.1-4.el7.noarch

[[email protected] ~]# rpm -e --nodeps PackageKit-yum-0.8.9-11.el7.x86_64

[[email protected] ~]# rpm -e --nodeps  rpm -e --nodeps yum-3.4.3-118.el7.noarch

[[email protected] ~]# rpm -qa|grep yum

• 查看当前操作系统版本

[[email protected] ~]# cd /etc

[[email protected] etc]# cat redhat-release 

Red Hat Enterprise Linux Server release 7.0 (Maipo)

 

• 下载centos的yum

[[email protected] ~]#wget http://mirrors.163.com/centos/7/os/x86_64/Packages/yum-metadata-parser-1.1.4-10.el7.x86_64.rpm 

[[email protected] ~]#wget http://mirrors.163.com/centos/7/os/x86_64/Packages/yum-3.4.3-150.el7.centos.noarch.rpm 

[[email protected] ~]#wget http://mirrors.163.com/centos/7/os/x86_64/Packages/yum-plugin-fastestmirror-1.1.31-40.el7.noarch.rpm 

 

 

• 安装centos的yum 安装过程中发现依赖了python-urlgrabber 又下载并安装了它安装python-urlgrabber 必须先删除老的版本

[[email protected] ~]# rpm -e --nodeps  python-urlgrabber-3.10-4.el7.noarch

[[email protected] ~]#wget http://mirrors.163.com/centos/7/os/x86_64/Packages/python-urlgrabber-3.10-8.el7.noarch.rpm 

[[email protected] ~]#rpm -ivh python-urlgrabber-3.10-8.el7.noarch.rpm 

[[email protected] ~]#rpm -ivh yum-metadata-parser-1.1.4-10.el7.x86_64.rpm 

• 最后两个相互依赖 所以要放在一起执行

[[email protected] ~]#rpm -ivh  yum-3.4.3-150.el7.centos.noarch.rpm yum-plugin-fastestmirror-1.1.31-40.el7.noarch.rpm 

 

• 更换yum源

[[email protected] ~]#cd /etc/yum.repos.d/

[[email protected] ~]#wget  http://mirrors.163.com/.help/CentOS7-Base-163.repo

 

注意：此处需要将CentOS7-Base-163.repo中的$releasever全部换成7

• 重建缓存

[[email protected] ~]#yum clean all

[[email protected] ~]#yum makecache

 

 

按照网上的步骤的花，最后一步还有一个“yum update”，会把所有的rpm都更新到最新状态，我暂时觉得没有必要没有执行。

 

最终测试yum install成功。