Ceilometer is the metering service in OpenStack. Central Agent polls for resource utilization statistics for resources not tied to instances or compute nodes.
![[Note]](../common/images/admon/note.png) | Note |
|---|---|
Due to limitations of a polling model, a single instance of this agent can be polling a given list of meters. In this setup, we install this service on the API nodes also in the active / passive mode. |
Making the Ceilometer Central Agent service highly available in active / passive mode involves managing its daemon with the Pacemaker cluster manager.
| Note |
|---|---|
You will find at this page the process to install the Ceilometer Central Agent. |
