not sure what it looks like on the Unix platform but in the Web UI on a Windows Server there is no separate square aka pane for the Deployer Server as in the Search Head Cluster software configuration Deployer on the Overview screen, although it is clearly assigned the Deployer role in the Monitoring Console and that is the only role for that Instance (I like to follow the guidelines to the T)
When you click on Topology it shows up under the Other category along with the Cluster Master and Deployment servers
All I'm saying is that it would be nice to be able to see it's performance metrics on the Overview page along with all its other brother and sister servers
