Chapter 3. Power monitoring overview

You can use power monitoring for Red Hat OpenShift to monitor the power usage and identify power-consuming containers running in an OpenShift Container Platform cluster. Power monitoring collects and exports energy-related system statistics from various components, such as CPU and DRAM. It provides estimates and granular power consumption data for Kubernetes pods and namespaces, and reads the power consumption of nodes.

Power monitoring is made up of the following major components:

Kepler is the key component of power monitoring that collects real-time CPU power consumption data from a node through the RAPL Subsystem. By understanding the total power consumption of the node and calculating the percent of CPU time each process is using, it is able to estimate the power consumption at a per process and container level.

Starting with version 0.4, Power Monitoring Operator for Red Hat OpenShift is FIPS compliant. When deployed on an OpenShift Container Platform cluster in FIPS mode, it uses Red Hat Enterprise Linux (RHEL) cryptographic libraries validated by National Institute of Standards and Technology (NIST).

For details on the NIST validation program, see Cryptographic module validation program. For the latest NIST status of RHEL cryptographic libraries, see Compliance activities and government standards.

To enable FIPS mode, you must install Power Monitoring Operator for Red Hat OpenShift on an OpenShift Container Platform cluster. For more information, see "Do you need extra security for your cluster?".