Ceph

Trying to add the instances to the ceph.conf (in section http://ceph.com/docs/master/radosgw/federated-config/#add-instances-to-ceph-config-file ) it uses two conventions to indicate the user should replace values:

For example:

rgw dns name = {hostname}
rgw socket path = /var/run/ceph/$name.sock

For the socket path, I had to go back all the way to the apache configuration example that had the path already. If the docs assumes locations in one place, it would be nice to keep the assumptions throughout for consistency.

It also doesn't explain why these two have different variable names (implying they are in fact different?):

rgw dns name = {hostname}
host = {host-name}