redhat free cost Developer subscription

Create a new login in https://developers.redhat.com

An email will be send from redhat for the activation to the email ID with which the new login is created.

Once confirmed by clicking the link, login to https://developers.redhat.com
to verify the correct login. Afterwards login to  https://access.redhat.com/ to verify the active subscription .

Then login to the Newly installed redhat server via ssh and execute the following commands

sudo subscription-manager register

when username and password is asked, provide the login credentials created previously.

after that if an error comes like this:
=================
HTTP error (401 - Unauthorized): You must first accept Red Hat's Terms and conditions. 
Please visit https://www.redhat.com/wapps/tnc/ackrequired?site=candlepin&event=signOn . You may have to log out of and back into the  Customer Portal in order to see the terms.
=================

login to the link provided and accept the terms and conditions. then redo the register command.

sudo subscription-manager refresh
sudo subscription-manager attach --auto

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