Introduction
Prometheus is an application which is a part of monitoring solution in CPS. It is used to actively gather statistics from the running virtual machines and application services.
Prometheus application resides on both pcrfclient VMs. It scrapes statistics from collectd exporter after every configured interval and stores in /var/data/Prometheus directory on pcrfclient VMs.
To learn more about Prometheus, refer to: https://prometheus.io/docs/introduction/overview/.