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.


πŸ› ️ Prerequisites

Kubernetes cluster (e.g., Minikube, EKS, GKE, AKS)


Docker


kubectl CLI access


Basic knowledge of Playwright and containers


πŸ“¦ 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

🌐 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.


πŸ” 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.


πŸ§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


πŸš€ 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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