THREAD: What is GitOps?

Is this something that you should learn?

Let's dive into it.

1/10

The idea behind GitOps is straightforward:

1. Scripts that create update, delete, etc. infrastructure are saved in GIT.
2. The state of your infrastructure is saved in GIT.
3. You have automation to trigger all your scripts.

Let's see an example.

2/10

Let's deploy an app with a single replica:

1. Commit the Deployment definition in GIT
2. Execute the script to deploy
3. Done

How is this new?

Surely you do this already!

The devil is in the details, though.

3/10

What do you do if you want to scale your deployment?

In GitOps, the state of the infrastructure is stored in GIT.

So you change your Deployment definition in GIT and apply the change to production.

What about autoscaling?

4/10

The autoscaler should not increase the number of replicas live!

It should increment the number of replicas in GIT.

Then, the change should be redeployed to production.

In GitOps, every change goes through GIT.

Always.

But why?