Loaded plugins: product-id, refresh-packagekit, security, subscription-manager
Updating certificate-based repositories.
Unable to read consumer identity
file://media/repodata/repomd.xml: [Errno 14] Could not open/read file://media/repodata/repomd.xml
Trying other mirror.
Setting up Install Process
No package ssh available.
Error: Nothing to do
如上所示，在配置yum，并尝试安装软件时，系统会出现上面14号错误，原因是没有找到相关文件导致。具体yum配置如下：
[rhel-source-local]
name=Red Hat Enterprise Linux local
#baseurl=ftp://ftp.redhat.com/pub/redhat/linux/enterprise/$releasever/en/os/SRPMS/
baseurl=file://mnt/media/
enabled=1
gpgcheck=1
gpgkey=file://media/RPM-GPG-KEY-redhat-release
在这里，所范的错误是将file://mnt/media/少写了一个/，因为file://本身有两个/,再加上linux 系统 的根/,所以应该是file:///mnt/media/，将此处改正后yum正常。