There is an ongoing outage on the primary CPAN mirror. It is possible to work around the issue by using MetaCPAN as a mirror.
Module Install Instructions
To install Backblaze::B2, copy and paste the appropriate command in to your terminal.
cpanm Backblaze::B2
perl -MCPAN -e shell
install Backblaze::B2
For more information on module installation, please visit the detailed CPAN module installation guide.