挂载redhat镜像创建本地yum源

上传镜像文件到/mnt文件夹下，或者上传到其他文件夹下

挂载镜像路径/mnt/cdrom

在mnt文件夹下创建cdrom文件夹

创建命令：mkdir  cdrom

挂载镜像命令：mount rhel-server-7.6-x86_64-dvd.iso cdrom

配置yum文件：vim /etc/yum.repos.d/rhel-source.repo

配置内容：

[rhel-source]
name=Red Hat Enterprise Linux $releasever - $basearch - Source
baseurl=file:///mnt/cdrom
enabled=1
gpgcheck=0
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-redhat-release

[rhel-source-beta]
name=Red Hat Enterprise Linux $releasever Beta - $basearch - Source
baseurl=file:///mnt/cdrom
enabled=1
gpgcheck=0
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-redhat-beta,file:///etc/pki/rpm-gpg/RPM-GPG-KEY-redhat-release

清除yum缓存：yum clean all

就可以从镜像里下载你所需要的东西了

卸载镜像：umount /mnt/cdrom