Deploying Versioned Migrations to Kubernetes from Atlas Schema Registry

This guide will walk you through deploying versioned migrations to Kubernetes from Atlas Schema Registry.

Use this setup if:

You are using the Atlas Kubernetes Operator with the versioned migrations flow (e.g using AtlasMigration CRDs).
You have a CI/CD pipelines pushing your migration directory to the Atlas Schema Registry.

Prerequisites

An Atlas Cloud account with a project on the Atlas Schema Registry
An Atlas Cloud Bot Token (see Creating a Bot Token
A Kubernetes cluster
Helm and Kubectl installed

Steps

Create a Kubernetes Secret with your Atlas Cloud Bot Token

kubectl create secret generic atlas-registry-secret --from-literal=token=<your token>

Create a Kubernetes Secret with your database credentials.
```
kubectl create secret generic db-credentials --from-literal=url="mysql://root:pass@localhost:3306/myapp"
```
Replace the url value with your database credentials.

Install the Atlas Operator

helm install atlas-operator oci://ghcr.io/ariga/charts/atlas-operator

Locate your Cloud project name in the Atlas Schema Registry
Open the Project Information pane on the right and locate the project slug (e.g project-name) in the URL.

Create an file named migration.yaml with the following content:

migration.yaml
apiVersion: db.atlasgo.io/v1alpha1
kind: AtlasMigration
metadata:
  name: atlasmigration
spec:
  urlFrom:
    secretKeyRef:
      key: url
      name: db-credentials
  cloud:
    tokenFrom:
      secretKeyRef:
        key: token
        name: atlas-registry-secret
  dir:
    remote:
      name: "project-name" # Migration directory name in your atlas cloud project
      tag: "latest"

Replace project-name with the name of your migration directory in the Atlas Schema Registry.

If you would like to deploy a specific version of the migrations, replace latest with the version tag.

Apply the AtlasMigration CRD manifest
```
kubectl apply -f migration.yaml
```
Check the status of the AtlasMigration CRD:
```
kubectl get atlasmigration
```
kubectl will output the status of the migration:
```
NAME             READY   REASON
atlasmigration   True    Applied
```
Observe the reported migration logs on your Cloud project in the Atlas Schema Registry:

Prerequisites​

Steps​

Prerequisites

Steps