Cloud-Native Microservices With Kubernetes - 2nd Edition

Metrics Available in Prometheus

When you install Prometheus, you gain access to a Prometheus instance, a Grafana instance, and a set of Prometheus exporters. The Prometheus Operator also creates kube-state-metrics, an add-on agent that listens to the Kubernetes API server and generates metrics about the state of Kubernetes objects, such as Nodes, Pods, Deployments, and more.

You can see a list of available metrics provided by kube-state-metrics in its official repository.

For example, metrics for Pods are available in the Pod metrics documentation.

The following are some examples of available metrics for Pods:

• kube_pod_overhead_memory_bytes: The Pod overhead with regard to memory associated with running a Pod.
• kube_pod_created: Unix timestamp representing the time when a Pod was created.
• kube_pod_container_status_ready: Describes whether the container's readiness check succeeded.
• And many more.