RANCID monitors a router's (or more generally a device's) configuration, including software and hardware (cards, serial numbers, etc) and uses CVS (Concurrent Version System) to maintain history of changes.
RANCID does this by the very simple process summarised as:
The configuration files are stored within the GitLab Project (https://gitlab.geant.net/puppet-apps/rancid/-/tree/test/files/rancid) and managed by puppet.
** Your SSH public key will need to be stored on the GitLab server, and you would use your dante.surname credentials
The URL for the production server is : https://prod-rancid.geant.net/cgi-bin/cvsweb.cgi/GEANT/