Garbage Collection Error

Please forgive someone new to looking after a private Docker registry on Linux. I’m trying to run a garbage collection via this command:

bin/registry garbage-collect --dry-run etc/docker/registry/config.yml

And I receive:

/var/lib/docker/devicemapper/mnt/06d08128ecab8c3c23248c030d51a2bc445338eb39f1f9ax77089682ad0b59c29/rootfs/bin/registry: error while loading shared libraries: librados.so.2: cannot open shared object file: No such file or directory

OS: CentOS 7