之前講過Redhat6.4安裝yum命令方法，今天有折騰了一下Redhat7.3版本，記錄一下。
Redhat6.4安裝參考： VMware Workstation安裝Redhat6.4全過程附圖（二）
1、Wget安裝
Redhat7.3最小安裝wget命令也需要自己安裝一下，wget下載地址：http://mirrors.163.com/centos/7/os/x86_64/Packages/wget-1.14-18.el7_6.1.x86_64.rpm
下載到/usr/local/soft目錄后，執行rpm -ivh wget-1.14-18.el7_6.1.x86_64.rpm安裝。
2、Yum必須的rpm文件下載
進入/usr/local目錄，創建一個soft文件夾，將安裝yum所需要的包下載到soft文件夾下。
wget https://vault.centos.org/7.3.1611/os/x86_64/Packages/python-iniparse-0.4-9.el7.noarch.rpm wget https://vault.centos.org/7.3.1611/os/x86_64/Packages/python-urlgrabber-3.10-8.el7.noarch.rpm wget https://vault.centos.org/7.3.1611/os/x86_64/Packages/yum-3.4.3-150.el7.centos.noarch.rpm wget https://vault.centos.org/7.3.1611/os/x86_64/Packages/yum-metadata-parser-1.1.4-10.el7.x86_64.rpm wget https://vault.centos.org/7.3.1611/os/x86_64/Packages/yum-plugin-fastestmirror-1.1.31-40.el7.noarch.rpm
3、卸載系統自帶的yum相關安裝
3.1 查看原來是否安裝yum： rpm -qa | grep yum
3.2 直接卸載自帶的yum： rpm -qa|grep yum|xargs rpm -e --nodeps
3.3 查看是否卸載干凈： rpm -qa |grep yum
4、安裝centos源yum
依次安裝之前下載的5個rpm文件
rpm -ivh python-iniparse-0.4-9.el7.noarch.rpm rpm -ivh python-urlgrabber-3.10-8.el7.noarch.rpm rpm -ivh yum-3.4.3-150.el7.centos.noarch.rpm --force --nodeps rpm -ivh yum-metadata-parser-1.1.4-10.el7.x86_64.rpm rpm -ivh yum-plugin-fastestmirror-1.1.31-40.el7.noarch.rpm --force --nodeps
5、rhel-source.repo配置
編輯rhel-source.repo文件
編輯命令：vi /etc/yum.repos.d/rhel-source.repo，將文件原內容清空，替換為下面的內容
# CentOS-Base.repo # # The mirror system uses the connecting IP address of the client and the # update status of each mirror to pick mirrors that are updated to and # geographically close to the client. You should use this for CentOS updates # unless you are manually picking other mirrors. # # If the mirrorlist= does not work for you, as a fall back you can try the # remarked out baseurl= line instead. # # [base] name=CentOS-$releasever - Base - 163.com baseurl=http://mirrors.163.com/centos/7/os/$basearch/ #mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=os gpgcheck=1 gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-CentOS-7
6、卸載subscription-manager
查看subscription-manager版本： rpm -qa | grep subscription-manager
卸載subscription-manager：rpm -e subscription-manager-1.1.23-1.el6.x86_64
7、yum驗證
清除緩存： yum clean all
測試，再次安裝rzsz命令：yum -y install lrzsz，執行成功。
建立元數據緩存：yum makecache