To offer more storage to your tenant's VMs, add another volume node running cinder services by following these steps. Install the required packages for cinder. Create a volume group called cinder-volumes (configurable using the cinder_volume parameter in cinder.conf). Configure tgtd with its targets.conf file and start the tgtd service. Connect the node to the Block Storage (cinder) database by configuring the cinder.conf file with the connection information. Make sure the iscsi_ip_address setting in cinder.conf matches the public IP of the node you're installing, then restart the cinder services. When you issue a cinder-manage host list command you should see the new volume node listed. If not, look at the logs in /var/log/cinder/volume.log for issues.