As for users, it is really important to understand the performance of the application and resource utilization at all the different abstraction layer, Kubernetes factored the management of the cluster by creating abstraction at different levels like container, pods, services and whole cluster. Now, each level can be monitored and this is nothing but Container resource monitoring.

The various container resource monitoring tools are as follows:

Heapster

InfluxDB

Grapfana

PRometheous

CAdvisor

https://aws.amazon.com/cloudwatch/container-monitoring/#:~:text=Container%20monitoring%20is%20the%20activity,ensure%20they%20are%20operating%20smoothly.