Google Cloud - App Engine Tutorial

Introduction

Google App Engine is a fully managed serverless platform designed for building and deploying scalable web applications and services. It provides built-in services and APIs such as NoSQL datastores, in-memory caching, and more. This tutorial will guide you through the process of setting up and deploying an application on Google App Engine from start to finish.

Prerequisites

Before you begin, you'll need the following:

• A Google Cloud Platform (GCP) account
• Google Cloud SDK installed on your local machine
• Basic knowledge of Python (or your preferred programming language)

Step 1: Setting Up Your GCP Project

First, you'll need to create a new project on Google Cloud Platform:

1. Go to the GCP Console.
2. Click on the project dropdown and select "New Project".
3. Enter a project name and click "Create".

Step 2: Installing the Google Cloud SDK

Download and install the Google Cloud SDK for your operating system. After installation, initialize the SDK with the following command:

Follow the prompts to authenticate and set the default project.

Step 3: Writing Your Application

Create a simple web application using your preferred programming language. For this tutorial, we'll use Python with Flask:

Create a file named main.py with the following content:

from flask import Flask
app = Flask(__name__)

@app.route('/')
def hello():
    return 'Hello, World!'

if __name__ == '__main__':
    app.run(host='0.0.0.0', port=8080)
                

Step 4: Creating the App Engine Configuration File

Create a file named app.yaml in the root of your project directory with the following content:

runtime: python37
entrypoint: gunicorn -b :$PORT main:app

handlers:
- url: /.*
  script: auto
                

Step 5: Deploying Your Application

Deploy your application to Google App Engine using the following command:

Follow the prompts to deploy your application. Once deployment is complete, you can access your application at https://<your-project-id>.appspot.com.

Step 6: Viewing Your Application Logs

You can view your application's logs using the following command:

This command will stream the logs from your application in real-time.

Conclusion

Congratulations! You have successfully deployed a web application on Google App Engine. This tutorial covered the basics of setting up a GCP project, writing a simple application, and deploying it to App Engine. Explore the App Engine documentation for more advanced features and configurations.