In this chapter, we barely scratched the surface of what is possible once you begin to configure the telemetry module in your existing OpenStack environment. You should also notice the awesomeness of heat by supporting Ceilometer resources and note that they work in tandem to manage instance scalability in a given stack. You should also keep in mind that Ceilometer is under heavy development and is extended to cover more metrics and monitoring facilities for image, block storage, object storage, and compute and network services. Although we did not cover them at all once, you should learn how metrics are implemented and measured. More advanced monitoring features are now available via Ceilometer resources, which might dictate an integration of an external monitoring tool, such as the Zabbix server. Relying on alarms in Ceilometer and Zabbix triggers, for example, might help you have a better understanding of your OpenStack environment and give you more control over what alerts or...