Getting container resource metrics from kubernetes cluster

Question

I am exploring client-go library for collecting resource metric for a kubernetes cluster. I am more keen on collecting the container metrics from all the pods.

But according to the wiki, https://kubernetes.io/docs/tasks/debug-application-cluster/resource-usage-monitoring/, i see that we can only get pod or node level metrics and not container level metrics.

Is there a way i can collect container level metric (like the way docker api gives the metrics for a container)?

Answer 1

You should deploy the External Metric server like Prometheus Adapter (example of full metric solution mentioned in official doc you linked).

The quickest way to achieve it is via kube-prometheus repository, which is part of prometheus-operator project. It already includes kube-state-metrics, which generates custom metrics of your interest (Pod Metrics), example of container related one: kube_pod_container_resource_requests_cpu_cores.