Why does the host registration script fail?

When you SSH into your own infrastructure machine that you want to attach as a Satellite host and run the host registration script, you see a message similar to the following example.

No package rh-python36 available.
Error: Nothing to do

Your machine does not meet the minimum requirements to become a Satellite host. In particular, you must have the following packages installed on your RHEL 7 or 8 machine.

For RHEL 8

Repository 'rhel-8-for-x86_64-appstream-rpms' is enabled for this system.
Repository 'rhel-8-for-x86_64-baseos-rpms' is enabled for this system.

To resolve this issue, follow these steps.

1. Add the required packages to your machine. For example, in IBM Cloud infrastructure you can run the following commands to add the required packages. For cloud provider-specific configurations, see Cloud infrastructure providers.

   1. Refresh the Red Hat packages on your machine.

      subscription-manager refresh
      

      If you see an error such as Network error, unable to connect to server. Please see /var/log/rhsm/rhsm.log for more information., check the security group and other network settings for your machine to make sure that you have connectivity to the internet.

   2. Enable the package repositories on your machine. For example, enable RHEL 8 package requirements.

      subscription-manager repos --enable rhel-8-for-x86_64-appstream-rpms
      subscription-manager repos --enable rhel-8-for-x86_64-baseos-rpms
      
      

2. Make sure that your machine meets the other host minimum requirements, such as minimum CPU and memory sizes.
3. Run the registration script on your machine again.