Kubernetes Container Orchestration Monitoring and Logging 2

Question 1

Which Kubernetes resource allows you to define alerting rules based on Prometheus metrics?

Accepted Answer

PrometheusRule

Answer

PrometheusRule is a custom resource definition (CRD) used by the Prometheus Operator to define alerting and recording rules.

Question 2

What does the `kubectl top nodes` command display?

Accepted Answer

CPU and memory usage of nodes

Answer

`kubectl top nodes` shows the current CPU and memory resource consumption for each node in the cluster.

Question 3

In Kubernetes, which component is responsible for collecting and serving resource metrics used by HPA?

Accepted Answer

Metrics Server

Answer

Metrics Server aggregates resource usage data from kubelets and exposes it via the Kubernetes Metrics API for HPA and `kubectl top`.

Question 4

Which log driver is commonly used when running Kubernetes nodes to forward container logs to a centralized system?

Accepted Answer

fluentd

Answer

Fluentd is a widely used log driver and DaemonSet-based agent that collects and forwards container logs to backends like Elasticsearch.

Question 5

What is the purpose of kube-state-metrics in a Kubernetes monitoring setup?

Accepted Answer

Exposes metrics about the state of Kubernetes objects

Answer

kube-state-metrics listens to the Kubernetes API and generates metrics about the state of objects like Deployments, Pods, and Nodes.

Kubernetes Container Orchestration Practice Test