Postgres to MySQL Database Migration Stack

Learn how to migrate tables and data between databases with Airbyte, leveraging the strengths of Change Data Capture and Postgres Write Ahead Log.

Basic

updatedOctober 18, 2023

connectors used

Postgres

MySQL

Welcome to the "Postgres to MySQL Database Migration Stack" repository! This repo provides a quickstart template for building a one-off database migration solution from an existing Postgres database to a MySQL database using Airbyte. We will easily migrate the tables and data from the Postgres database to the MySQL database with Airbyte using Change Data Capture (CDC) and Postgres Write Ahead Log (WAL). While this template doesn't delve into specific data, its goal is to showcase how the database migration solution can be achieved with Airbyte.

Just like other Airbyte quickstarts, this quickstart is designed to minimize setup hassles and propel you forward.

Infrastructure Layout

Prerequisites

Before you embark on this integration, ensure you have the following set up and ready:

Python 3.10 or later: If not installed, download and install it from Python's official website.
Docker and Docker Compose (Docker Desktop): Install Docker following the official documentation for your specific OS.
Airbyte OSS version: Deploy the open-source version of Airbyte. Follow the installation instructions from the Airbyte Documentation.
Terraform: Terraform will help you provision and manage the Airbyte resources. If you haven't installed it, follow the official Terraform installation guide.

1. Setting an environment for your project

Get the project up and running on your local machine by following these steps:

1. Clone the repository (Clone only this quickstart):

git clone --filter=blob:none --sparse  https://github.com/airbytehq/quickstarts.git

cd quickstarts

git sparse-checkout add postgres_to_mysql_migration

2. Navigate to the directory:

cd postgres_to_mysql_migration

3. Set Up a Virtual Environment (You may skip this and the following step if you don't intend to develop or contribute):

For Linux and Mac:

python3 -m venv venv

python3 -m venv venv

For Windows:

python -m venv venv

.\venv\Scripts\activate

4. Install Dependencies:

pip install -e ".[dev]"

2. Setting Up Airbyte Connectors with Terraform

Airbyte allows you to create connectors for sources and destinations, facilitating data synchronization between various platforms. In this project, we're harnessing the power of Terraform to automate the creation of these connectors and the connections between them. Here's how you can set this up:

1. Navigate to the Airbyte Configuration Directory:

Change to the relevant directory containing the Terraform configuration for Airbyte:

cd infra/airbyte

2. Modify Configuration Files:

Within the infra/airbyte directory, you'll find three crucial Terraform files:

provider.tf: Defines the Airbyte provider.
main.tf: Contains the main configuration for creating Airbyte resources.
variables.tf: Holds various variables, including credentials.

Adjust the configurations in these files to suit your project's needs. Specifically, provide credentials for your Postgres and MySQL connections. You can utilize the variables.tf file to manage these credentials.

3. Initialize Terraform:

This step prepares Terraform to create the resources defined in your configuration files.

terraform init

4. Review the Plan:

Before applying any changes, review the plan to understand what Terraform will do.

terraform plan

5. Apply Configuration:

After reviewing and confirming the plan, apply the Terraform configurations to create the necessary Airbyte resources.

terraform apply

6. Verify in Airbyte UI:

Once Terraform completes its tasks, navigate to the Airbyte UI. Here, you should see your Postgres source and MySQL destination connectors, as well as the connection between them, set up and ready to go.

Next Steps

Once you've set up and launched this initial integration, you can proceed to sync the connection to trigger a one-off migration. The real power of this quickstart lies in its adaptability and extensibility. Here’s a roadmap to help you customize and harness this project tailored to your specific data needs:

1. Plan your Migration:

Ideally, database migration should be a planned activity. Do not run a migration job during a production peak. Migration latency depends on factors such as the size of data to be moved, geographic location of the source and destination, and other parameters. Ensure you test thoroughly before deploying to production.

2. Extend the Project:

The real beauty of this integration is its extensibility. Whether you want to add more Postgres sources, migrate to more than one MySQL databases, integrate additional tools, or modify the sync schedule – the floor is yours. The granularity of the migration can also be set by selecting the correct sync mode for each stream (table). Read sync mode for more details. With the foundation set, sky's the limit for how you want to extend and refine your data processes.

Suggested Read:

Postgres Migration Tool

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