The RGW process that runs on the rgw0 virtual machine by default reads /etc/ceph/ceph.conf for configuration settings as it starts up, as do other Ceph daemons. We need to update configuration parameters in this file to customize the RGW settings for our use-case. It is important to note that the values of the configuration options we choose will only be applicable to our sandbox environment and might differ somewhat from those needed for production environments.
First open the Ceph configuration file /etc/ceph/ceph.conf in your favorite text editor and go to the section beginning with [client.rgw.ceph-rgw0]. Before changes it should look like the following:
…[client.rgw.ceph-rgw0]host = ceph-rgw0keyring ...
