The collection layer includes several daemons that gather information about devices, performance, and Events. They feed information to ZenHub to distribute to the appropriate database. The Zenoss Core daemons are easy to identify—they all start with the prefix "zen".
As the following screenshot illustrates, the Daemons page provides us with the complete view of the Zenoss Daemons that includes the process ID (PID) and up/down State. Green is up; red is down. From the interface, we can also view the Log File, edit the Configuration, and start and Stop each daemon.
If we browse the file system, we will find each daemon in