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With containers comes a level of agility never before experienced in the world of business. In seconds, administrators can roll out deployments for a multitude of services. And when those businesses need to scale those containers, they can turn to Docker Swarm or Kubernetes.

But what happens when even a standard container workflow can’t keep up with the ever-growing demand of business? You’d be hard-pressed to find a more efficient means of deploying and scaling a container cluster than that found in Kubernetes. And although that may very well be true, it doesn’t mean the development cycle can’t be improved.

GitOps is a method of workflow that was conceptualized by “everyone who successfully did infrastructure-as-code … is the true creator of the concept of GitOps,” according to Priyanka Sharma, who is the director of technical evangelism at GitLab.

Enter GitOps

But what, exactly, is GitOps? On the surface, it is quite simple. GitOps is centered around using a version control system (such as Git) to house all information, documentation, and code for a Kubernetes deployment, and then use automated directors to deploy changes to the cluster. However, once you dig past the surface, you discover that it’s far more complex than that.

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GitOps provides a way for developers to manage operational workflows, particularly for Kubernetes, using Git and their own version control system, Sharma said. The same process they use to merge code using pull requests or merge requests can be used to deploy to Kubernetes.

“For those shops doing DevOps, this approach can be appealing because it brings the workflow closer to the developer,” Sharma said.

This approach has some key benefits, she explained. Developers can use the tools they are familiar with to push code into production. “Productivity soars and DevOps actually happens,” she explained, adding that “This is a core philosophy at GitLab where everything is MR-first.”

And because everything is going through the version control system, it is recorded and visible to all, Sharma said. “There is an audit trail, the ability to revert problematic changes, and ultimately a single source of truth of what is happening in the system from both, the software development and infrastructure perspective.”

At its heart, GitOps is an operating model for Kubernetes and other cloud technologies. What sets this apart from other models is that it centralizes every aspect of the process, so that you have a singular path for managing both operations and development.

“One of the most important functions of GitOps is to enable a group of system changes to be applied correctly and then verified,”  said Alexis Richardson, the CEO and founder of Weaveworks who is widely credited for coining the term “GitOps” itself. “After that, GitOps should enable the users and orchestrators to be notified (alerted) if any of the systems has drifted from the correct state so that it may then be converged back to the correct desired state (which is in Git). So in GitOps, we MUST use continuous observation and verification, to enable app & cluster management.”

What is GitOps and Why It Might Be The Next Big Thing

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Also available on Apple Podcasts, Google Podcasts, Overcast, PlayerFM, Pocket Casts, Spotify, Stitcher, TuneIn

How Does GitOps Work?

It’s complicated. But let’s simplify.

Imagine you have every single piece of documentation, all of your YAML files, and every bit of necessary code required for Kubernetes contained in a single Git repository. With the help of a few automation tools, anyone who is tasked with managing that Kubernetes deployment can do a pull request, edit the code, and then issue a merge request to that Git repository.

“If you don’t have a good understanding on why Kubernetes is the priority, why it’s asynchronous, why it’s an even stream … if you don’t understand all of that, just looking at the GitOps definition, looks like this is somehow magic,” said Stefan Prodan, Weaveworks engineer.

Once the merge request is complete, the automated GitOps operator detects something has changed, another automator (like Flagger) declares the changes operational, and the change is then automatically deployed to the cluster. Here’s an example of how this can function:

  • Jenkins (an open source automation server) pushes a tagged image to Quay (an app registry).
  • Jenkins pushes the config and Helm (Kubernetes manager) charts to the master Git storage bucket.
  • An automated cloud function copies the config and Helm charts from the master Git storage bucket to the master Git repository.
  • Flagger ensures the changes are viable.
  • GitOps operator updates the cluster.

In this workflow, automation is crucial, so to keep everything moving with a level of efficiency that cannot be matched with purely manual administration.

Why Should You Use GitOps?

First and foremost, GitOps makes your workflow far more efficient. On top of that, using GitOps makes passing SOC 2 compliance far more cost-efficient. And on the topic of saving money, Weaveworks’ Richardson has this to say:

Imagine a world where every time you do a deployment it’s correct. And if it’s not correct, then the deployment fails completely, so you can try again or make other intelligent decisions. Imagine it’s correct, imagine you know it’s correct and imagine you can go home and be told later if something went wrong. That is just an incredible cost-saver in operational overhead. Moving from an unsafe, semi-reliable system to one that is basically more robust.”

So in the end, GitOps offers:

  • Increased productivity with continuous deployment automation.
  • Enhanced developer experience by pushing code and not containers.
  • Improved stability, thanks to an automated audit log of all cluster changes.
  • Higher reliability from Git’s built-in revert/rollback and fork and from a single source of truth.
  • Consistency and standardization of end-to-end workflows.
  • Stronger security, due to Git’s strong correctness and the cryptography used to track and manage changes.
  • Cost-effectiveness from lower downtimes and vastly improved productivity.
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For more about GitOps, listen to our podcast interview with Weaveworks’ Alexis Richardson and Stefan Prodan.

What is GitOps and Why It Might Be The Next Big Thing

Also available on Apple Podcasts, Google Podcasts, Overcast, PlayerFM, Pocket Casts, Spotify, Stitcher, TuneIn

InApps Technology is a wholly owned subsidiary of Insight Partners, an investor in the following companies mentioned in this article: Docker.

Feature image by Tonny Adza from Pixabay.

Source: InApps.net

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As a Senior Tech Enthusiast, I bring a decade of experience to the realm of tech writing, blending deep industry knowledge with a passion for storytelling. With expertise in software development to emerging tech trends like AI and IoT—my articles not only inform but also inspire. My journey in tech writing has been marked by a commitment to accuracy, clarity, and engaging storytelling, making me a trusted voice in the tech community.

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