08 Jul 2023
In this blog post I'd like to introduce you to the concept of GitOps! 🚀
If you're a data engineer curious about this buzzword, you've come to the right place. We'll discover what GitOps is all about, if it is somehow linked to DevOps, and why it can be a game-changer for data engineering teams.
GitOps is like a powerful way of managing infrastructure and application deployments. At its core, GitOps combines the power of Git, the widely popular version control system, with the principles of infrastructure as code. This means that instead of making manual changes to your infrastructure, you describe and manage it through code stored in a Git repository. Exciting, right?
You might be wondering:
Is GitOps related to DevOps?
Well, DevOps is a cultural and operational philosophy that brings together development and operations teams to collaborate seamlessly throughout the software development lifecycle. It emphasizes continuous integration, continuous delivery, and collaboration. On the other hand, GitOps is an operational framework that specifically focuses on using Git as the source of truth for managing infrastructure and application deployments.
In other words, while DevOps is a broader philosophy, GitOps is a specific approach within the DevOps realm that emphasizes using Git as the central control plane for managing deployments. With GitOps, you can ensure that your infrastructure and application configurations are versioned, auditable, and easily reproducible, all through the power of Git.
At this point you might be a little confused, thinking:
Isn't versioning my Terraform/Ansible code on Git already applying GitOps?
This is a great question that highlights an important distinction between Version Control and actual GitOps.
While versioning your infrastructure code with tools like Terraform or Ansible is indeed a step in the right direction, GitOps takes it a step further by introducing a declarative and continuous approach to infrastructure management:
1- GitOps emphasizes the declarative nature of managing infrastructure:
In GitOps, you simply define the desired state of your infrastructure and application deployments in code stored in a Git repository. This declarative approach ensures that your infrastructure is always aligned with the defined state, regardless of the underlying tools used for provisioning.
2- GitOps embraces the principles of continuous integration and continuous delivery:
It leverages Git's capabilities to automate the deployment of infrastructure and application changes. With GitOps, every change committed to the Git repository triggers an automated workflow to deploy those changes, ensuring a consistent and reproducible deployment process.
3- GitOps goes beyond version control by treating Git as the single source of truth for your infrastructure and application deployments:
It promotes collaboration, visibility, and accountability among team members. Everyone can access, review, and contribute to the codebase, enabling efficient collaboration and reducing manual errors.
The declarative nature of GitOps allows you to only worry about defining the desired state of your infrastructure, not about how to reach it. There will be a service that either will be noticed by using git hooks, or that will keep polling the Git repository for new changes, and when such changes are found, an automatic process to reflect those changes in your infrastructure will start applying them.
This approach is more secure and less prone to human error:
The below image clearly shows how a GitOps flow would work:
Now, let's get to the exciting part—how GitOps can benefit data engineering teams! 🚀
We have learnt how GitOps is a powerful approach for managing infrastructure and application deployments, leveraging Git as the source of truth.
And as a data engineer, you have discovered how GitOps can streamline your workflows, enhance collaboration, and bring greater security and compliance to your data pipelines.
In the upcoming articles I will showcase and dive more deeply into some tools that will enable you to manage your infrastructure, your services and even ETL pipelines using GitOps principles.
Stay tuned for more GitOps! 🎉