proxy_hostname
           Set this to a non-blank value if subscription-manager should use a reverse proxy to access the subscription service. This sets the host for the reverse proxy. Overrides hostname from HTTP_PROXY and HTTPS_PROXY environment variables. This value should not contain the scheme to be used with the proxy (e.g. http or https). To specify that use the proxy_scheme option.       

       proxy_scheme
           This only sets the scheme for the reverse proxy when writing out the proxy to repo definitions. Set this to a non-blank value if you want to specify the scheme used by your package manager for subscription-manager managed repos. This defaults to "http".           

           Note: subscription-manager tooling does not use this option for connecting reverse proxy and HTTPS is always used.
       
       proxy_port
           Set this to a non-blank value if subscription-manager should use a reverse proxy to access the subscription service. This sets the port for the reverse proxy. Overrides port from HTTP_PROXY and HTTPS_PROXY environment variables.

           Please note that setting this to any value other than 3128 (depending on your SELinux configuration) will require an update to that policy.

           To add a local policy:

           # semanage port -a -t squid_port_t -p tcp <port number>

           To change the system back to look at 3128 port, just remove the policy:

           # semanage port -d -t squid_port_t -p tcp <port number>

       proxy_username
           Set this to a non-blank value if subscription-manager should use an authenticated reverse proxy to access the subscription service. This sets the username for the reverse proxy. Overrides username from HTTP_PROXY and HTTPS_PROXY environment variables.

       proxy_password
           Set this to a non-blank value if subscription-manager should use an authenticated reverse proxy to access the subscription service. This sets the password for the reverse proxy. Overrides password from HTTP_PROXY and  HTTPS_PROXY environment variables.