Connecting to Google Cloud SQL from Compute Engine

Google Cloud SQL is a managed database service, and Google Compute Engine is a virtual machine (VM) service on Google Cloud Platform (GCP). In this guide, we'll explore the process of connecting to a Google Cloud SQL database from a Google Compute Engine instance and provide a sample code snippet for reference.

Key Concepts

Before we dive into the code, let's understand some key concepts related to connecting to Google Cloud SQL from Compute Engine:

• Google Cloud SQL: It is a fully managed database service that supports various database engines, including MySQL, PostgreSQL, and SQL Server.
• Compute Engine: It is a scalable and flexible VM service on GCP, allowing you to run custom applications and services on virtual machines.
• Database Connection: You can establish a connection to a Cloud SQL instance from a Compute Engine VM to interact with your database.

Sample Code: Connecting to Cloud SQL from Compute Engine (Python)

Here's a sample Python code snippet to connect to a Google Cloud SQL instance from a Compute Engine VM:

# Import the required libraries
import pymysql
# Database connection configuration
db_config = {
    'user': 'your-username',
    'password': 'your-password',
    'host': 'your-database-host',
    'database': 'your-database-name'
}
# Create a connection to the Cloud SQL database
conn = pymysql.connect(**db_config)
# Create a cursor
cursor = conn.cursor()
# Execute SQL queries
cursor.execute(`SELECT * FROM your-table`)
# Fetch and print results
results = cursor.fetchall()
for row in results:
    print(row)
# Close the cursor and connection
cursor.close()
conn.close()
    

Make sure to replace

your-username

,

your-password

,

your-database-host

,

your-database-name

, and

your-table

with your specific database details.

Conclusion

Connecting to Google Cloud SQL from a Compute Engine instance is a common use case when hosting applications and databases on Google Cloud. This integration allows you to build scalable and reliable solutions while ensuring secure access to your database resources.