|Don't ask to ask, just ask|
Sorry for the late reply but I just got the time to review your question.
There is a bug reported related to your problem:
See here perlbrew fails to install patchperl #350. The solution that worked before the ticket was closed:
From my point of view it looks that perlbrew is not installed correctly or need to be updated. If I was you I would simply ask the Admin of the node to login as root and install perlbrew from CPAN. By doing this you will avoid troubleshooting step by step the process.
Never the less I would highly recommend first installing the latest CPAN version for your CentosOS 6.8 e.g.:$ sudo cpan cpan> install CPAN cpan> reload cpan
Then simply ask him to run:sudo cpan App::perlbrew
I hope this helps, keep us updated. BR / Thanos
Seeking for Perl wisdom...on the process of learning...not there...yet!
In reply to Re^2: perlbrew/curl: curl: (60) Peer certificate cannot be authenticated with known CA certificates