$ sc
Loading internal logger. Log::Log4perl recommended for better logging

Starting with version 2.29 of the cpan shell, a new download mechanism
is the default which exclusively uses cpan.org as the host to download
from. The configuration variable pushy_https can be used to (de)select
the new mechanism. Please read more about it and make your choice
between the old and the new mechanism by running

    o conf init pushy_https

Once you have done that and stored the config variable this dialog
will disappear.
Terminal does not support AddHistory.

To fix that, maybe try>  install Term::ReadLine::Perl


cpan shell -- CPAN exploration and modules installation (v2.29)
Enter 'h' for help.

cpan[1]> o conf init pushy_https
Boolean. Defaults to true. If this option is true, the cpan shell will
use https://cpan.org/ to download stuff from the CPAN. It will fall
back to http://cpan.org/ if it can't handle https for some reason
(missing modules, missing programs). Whenever it falls back to the
http protocol, it will issue a warning.

If this option is true, the option C<urllist> will be ignored.
Consequently, if you want to work with local mirrors via your own
configured list of URLs, you will have to choose no below.

 <pushy_https>
Do you want to turn the pushy_https behaviour on? [yes] 


Please remember to call 'o conf commit' to make the config permanent!

cpan[2]> o conf commit
commit: wrote '/root/.cpan/CPAN/MyConfig.pm'

cpan[3]> q
Terminal does not support GetHistory.
Lockfile removed.
$ 
$ sudo grep pushy /root/.cpan/CPAN/MyConfig.pm
  'pushy_https' => q[1],
$