红帽配置Centos仓库[红帽Redhat7替换Centos7网络源]

1.卸载红帽yum源
rpm -e $(rpm -qa|grep yum) --nodeps
2.删除所有repo相关文件
rm -rf /etc/yum.conf
rm -rf /etc/yum.repos.d/
rm -rf /var/cache/yum
3.下载centos相关yum组件
wget https://mirrors.aliyun.com/centos/7/os/x86_64/Packages/yum-3.4.3-154.el7.centos.noarch.rpm
wget https://mirrors.aliyun.com/centos/7/os/x86_64/Packages/yum-metadata-parser-1.1.4-10.el7.x86_64.rpm
wget https://mirrors.aliyun.com/centos/7/os/x86_64/Packages/yum-plugin-fastestmirror-1.1.31-42.el7.noarch.rpm
wget https://mirrors.aliyun.com/centos/7/os/x86_64/Packages/yum-updateonboot-1.1.31-42.el7.noarch.rpm
wget https://mirrors.aliyun.com/centos/7/os/x86_64/Packages/yum-utils-1.1.31-42.el7.noarch.rpm
//如果没有wget命令则使用curl命令
curl -o yum-utils-1.1.31-42.el7.noarch.rpm  https://mirrors.aliyun.com/centos/7/os/x86_64/Packages/yum-utils-1.1.31-42.el7.noarch.rpm
curl -o yum-3.4.3-154.el7.centos.noarch.rpm  https://mirrors.aliyun.com/centos/7/os/x86_64/Packages/yum-3.4.3-154.el7.centos.noarch.rpm
curl -o yum-metadata-parser-1.1.4-10.el7.x86_64.rpm  https://mirrors.aliyun.com/centos/7/os/x86_64/Packages/yum-metadata-parser-1.1.4-10.el7.x86_64.rpm
curl -o yum-plugin-fastestmirror-1.1.31-42.el7.noarch.rpm   https://mirrors.aliyun.com/centos/7/os/x86_64/Packages/yum-plugin-fastestmirror-1.1.31-42.el7.noarch.rpm
curl -o yum-updateonboot-1.1.31-42.el7.noarch.rpm https://mirrors.aliyun.com/centos/7/os/x86_64/Packages/yum-updateonboot-1.1.31-42.el7.noarch.rpm
3.安装所有相关组件
[root@xuliangwei-node1 ~]# rpm -ivh yum-*
4.下载base和epel仓库
wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo
sed -i 's#\$releasever#7#g' /etc/yum.repos.d/CentOS-Base.repo
wget -O /etc/yum.repos.d/epel.repo http://mirrors.aliyun.com/repo/epel-7.repo