What should I do if I get an error when installing yum under centos7?

Problem:

yum source repodata configuration file repomd.xml cannot be found.

The error is reported as follows:

##Solution:

First find the path to repomd.xml

find / -type f -name "repomd.xml"

We see that the path is:/mnt, and the error path is:/mnt/cdrom

(Recommended tutorial:

centos tutorial)

Check that the mount point has mnt, so we need to find this path and change /mnt/cdrom to /mnt

to configure the repodata/repomd.xml path

cd /etc/yum.repos.d/

vi CentOS-Media.repo

Change the path to the path we found: change /mnt/cdrom to /mnt

Save and execute yum source

yum clean all
yum makecache

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