Prometheus for metrics collection in Kubernetes - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to expose metrics endpoint in a Kubernetes pod manifest.

Kubernetes

containers:
- name: app
  image: myapp:latest
  ports:
  - containerPort: [1]

Drag options to blanks, or click blank then click option'

A8080

B443

C80

D9090

Attempts:

3 left

💡 Hint

Common Mistakes

Using HTTP port 80 instead of Prometheus metrics port 9090.

Confusing HTTPS port 443 with metrics port.

The default port for Prometheus metrics endpoint is 9090, so the container should expose port 9090.

2fill in blank

medium

Complete the Prometheus scrape config to target Kubernetes pods with label 'app=web'.

Kubernetes

- job_name: 'kubernetes-pods'
  kubernetes_sd_configs:
  - role: pod
  relabel_configs:
  - source_labels: [__meta_kubernetes_pod_label_app]
    action: keep
    regex: [1]

Drag options to blanks, or click blank then click option'

Adatabase

Bweb

Ccache

Dapi

Attempts:

3 left

💡 Hint

Common Mistakes

Using wrong label value in regex causing no pods to be scraped.

Confusing label keys with label values.

The regex should match the label value 'web' to scrape pods labeled with app=web.

3fill in blank

hard

Fix the error in the Prometheus service monitor selector to match label 'release=prometheus'.

Kubernetes

selector:
  matchLabels:
    release: [1]

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Amonitoring

Bkube-prometheus

Cprometheus

Ddefault

Attempts:

3 left

💡 Hint

Common Mistakes

Using incorrect release name causing selector to fail.

Typos in label values.

The selector must match the label 'release=prometheus' to find the correct service monitor.

4fill in blank

hard

Fill both blanks to create a Prometheus alert rule that fires when CPU usage is above 80%.

Kubernetes

groups:
- name: cpu_alerts
  rules:
  - alert: HighCPUUsage
    expr: sum(rate(container_cpu_usage_seconds_total[1][5m])) by (pod) [2] 0.8
    for: 2m
    labels:
      severity: warning
    annotations:
      summary: "CPU usage is high"

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Anamespace="default"

Bnamespace="kube-system"

C>

D<

Attempts:

3 left

💡 Hint

Common Mistakes

Using wrong namespace filter causing no data.

Using '<' instead of '>' causing alert to never fire.

The expression filters metrics for the default namespace and triggers alert when usage is greater than 0.8 (80%).

5fill in blank

hard

Fill all three blanks to create a Prometheus scrape config for a Kubernetes service with port 'metrics' and path '/metrics'.

Kubernetes

- job_name: 'kubernetes-service'
  kubernetes_sd_configs:
  - role: service
  relabel_configs:
  - source_labels: [__meta_kubernetes_service_label_app]
    action: keep
    regex: [1]
  metrics_path: [2]
  scheme: [3]

Drag options to blanks, or click blank then click option'

Awebapp

B/metrics

Chttp

Dhttps

Attempts:

3 left

💡 Hint

Common Mistakes

Using wrong label value causing no targets.

Wrong metrics path or scheme causing scrape failures.

The job scrapes services labeled 'webapp' on the '/metrics' path using HTTP scheme.