Using Playwright in a Kubernetes Environment
Using Playwright in a Kubernetes Environment
Playwright is a powerful end-to-end testing framework for web applications. Running Playwright in a Kubernetes environment enables you to scale tests, automate CI/CD pipelines, and isolate test runs across environments.
✅ Why Use Playwright in Kubernetes?
Run tests at scale across pods/nodes
Automate browser testing in CI/CD pipelines
Ensure environment consistency using containers
Integrate with tools like Jenkins, GitLab CI, GitHub Actions, etc.
π ️ Prerequisites
Kubernetes cluster (e.g., Minikube, EKS, GKE, AKS)
Docker
kubectl CLI access
Basic knowledge of Playwright and containers
π¦ Step-by-Step Guide
1. Create a Dockerfile for Playwright
Dockerfile
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# Use official Playwright image
FROM mcr.microsoft.com/playwright:focal
# Set working directory
WORKDIR /app
# Copy project files
COPY . .
# Install dependencies
RUN npm ci
# Run Playwright to install browsers
RUN npx playwright install
# Default command
CMD ["npx", "playwright", "test"]
This image includes Chromium, Firefox, and WebKit with necessary dependencies for headless execution.
2. Build and Push the Docker Image
bash
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docker build -t your-dockerhub-username/playwright-tests .
docker push your-dockerhub-username/playwright-tests
3. Create a Kubernetes Deployment YAML
yaml
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apiVersion: apps/v1
kind: Deployment
metadata:
name: playwright-tests
spec:
replicas: 1
selector:
matchLabels:
app: playwright
template:
metadata:
labels:
app: playwright
spec:
containers:
- name: playwright
image: your-dockerhub-username/playwright-tests
resources:
limits:
memory: "1Gi"
cpu: "500m"
You can increase replicas to run parallel tests or implement a job instead of a deployment if it's for one-time runs.
4. Apply the Deployment
bash
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kubectl apply -f playwright-deployment.yaml
Check pod status:
bash
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kubectl get pods
View logs:
bash
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kubectl logs <pod-name>
5. Optional: Use Kubernetes Jobs for One-Time Test Runs
If you want to run Playwright as a one-time CI task, use a Job instead of a Deployment:
yaml
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apiVersion: batch/v1
kind: Job
metadata:
name: playwright-job
spec:
template:
spec:
containers:
- name: playwright
image: your-dockerhub-username/playwright-tests
restartPolicy: Never
backoffLimit: 3
π Running Tests with Browser GUI (Non-headless)
For debugging or local testing, ensure your cluster supports GUI rendering (e.g., Xvfb or VNC inside the container), or run tests in headless mode, which is standard for CI/CD.
π Best Practices
Use ConfigMaps or Secrets to manage environment variables or credentials.
Mount PersistentVolume to store test reports/artifacts.
Integrate with Allure, JUnit, or other reporters.
Set up Horizontal Pod Autoscaler if running in parallel at scale.
π§ͺ Sample Use Case
E2E browser tests run nightly in Kubernetes
Parallel test pods validate across Chrome, Firefox, WebKit
Reports are saved to S3 or artifact storage
Integrated with GitHub Actions pipeline
π Final Thoughts
Running Playwright in Kubernetes brings the power of containerization to browser testing. It’s scalable, reproducible, and perfect for modern DevOps workflows. With the right setup, you can automate reliable browser tests at any scale.
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