I have a confusion that even though yum is not configured on my RHEL server but yum list is showing. Yum install <package_name> fails.

I hope, my question is clear of how yum list is working even though yum is not configured on the server.

Please revert with the reply to my query.

Regards

Hello,
exec this command, "yum repolist", to show how many repositories are configured on your system.

But,can you please explain with an example. Thanks.

Run the following command as root and report the results:

yum repolist

Please find output of yum repolist:-

Loaded plugins: katello, product-id, security, subscription-manager
Updating certificate-based repositories.
repo id repo name status
Packages server1 3,290
repolist: 3,290

In your output there is no repo's configured. What are the output your getting through yum, all are installed packages.
if yum is configured it will show the repo name (your repo name)

Thanks for your reply. When I do

yum list,

Of the 3 column output, some are coming as installed and some as packages.

I hope, I could explain clearly.