Hello Nais¶

This tutorial will take you through the process of getting a simple application up and running on Nais.

Prerequisites¶

• You have a GitHub account connected to your GitHub organization (e.g. navikt)
• Naisdevice installed
• Member of a Nais team
• GitHub CLI installed

Setup¶

Create your own GitHub repository¶

Create your own repo using the nais/hello-nais as a template.

You create a new repository through either the GitHub UI or through the GitHub CLI:

gh repo create <GITHUB-ORG>/<MY-APP> --template nais/hello-nais --private --clone

cd <MY-APP>

Authorize the repository for deployment¶

This is required for the GitHub Actions workflow to be able to deploy your application.

Visit Console. Select your team, and visit the Repositories tab.

Here you can add your repository to the list of authorized repositories. This authorizes the GitHub repository to perform deployments on behalf of your team.

Dockerfile¶

This describes the system your application will be running on. It includes the base image, and the commands needed to build your application. This is the payload you are requesting Nais to run. We have created this file for you, as there are no changes needed for this tutorial. Check it out.

Application manifest¶

This file describes your application to the Nais platform so that it can run it correctly and provision the resources it needs.

Create a file called app.yaml in a .nais-folder.

mkdir .nais
touch .nais/app.yaml

Add the following content to the file, and insert the appropriate values in the placeholders on the highlighted lines:

apiVersion: nais.io/v1alpha1
kind: Application
metadata:
  name: <MY-APP>
  namespace: <MY-TEAM>
spec:
  ingresses:
    - https://<MY-APP>.<MY-ENV>.nav.cloud.nais.io
  image: {{image}}
  port: 8080
  ttl: 3h
  replicas:
    max: 1
    min: 1
  resources:
    requests:
      cpu: 50m
      memory: 32Mi

GitHub Actions workflow¶

GitHub Actions uses the Dockerfile from step 1 and the app.yaml from step 2. to build and deploy your application to Nais.

Create a file called main.yaml in a .github/workflows-folder.

mkdir -p .github/workflows
touch .github/workflows/main.yaml

Add the following content to the file, and insert the appropriate values in the placeholders on the highlighted lines:

name: Build and deploy
on:
  push:
    branches:
      - main
jobs:
  build_and_deploy:
    name: Build, push and deploy
    runs-on: ubuntu-latest
    permissions:
      contents: read
      id-token: write
    steps:
    - uses: actions/checkout@v4
    - name: Build and push image and SBOM to OCI registry
      uses: nais/docker-build-push@v0
      id: docker-build-push
      with:
        team: <MY-TEAM> # Replace
        identity_provider: ${{ secrets.NAIS_WORKLOAD_IDENTITY_PROVIDER }} # Provided as Organization Secret
        project_id: ${{ vars.NAIS_MANAGEMENT_PROJECT_ID }} # Provided as Organization Variable
    - name: Deploy to Nais
      uses: nais/deploy/actions/deploy@v2
      env:
        CLUSTER: <MY_ENV> # Replace (1)
        RESOURCE: .nais/app.yaml # This points to the file we created in the previous step
        VAR: image=${{ steps.docker-build-push.outputs.image }}
        TELEMETRY: ${{ steps.docker-build-push.outputs.telemetry }}

Excellent! We're now ready to deploy

Ship it¶

Previously we've made our application and created the required files for deployment. In this part of the tutorial we will deploy our application to Nais.

Commit and push your changes¶

Now that we have added the required files, it's time to commit and push them to GitHub.

git add .
git commit -m "FEAT: Add nais app manifest and github workflow"
git push origin main

Observe the GitHub Actions workflow¶

When pushed, the GitHub Actions workflow will automatically start. You can observe the workflow by running the following command:

gh run watch

If you get a 403 PERMISSION_DENIED error in the Build and push image step, you might not have added your repo to the Nais team as described above, or it might not have synchronized yet.

Visit your application¶

On successful completion, we can view our application at https://<MY-APP>.<MY-ENV>.nav.cloud.nais.io

Congratulations! You have now successfully deployed your first application to Nais! The next and most important step is to clean up after ourselves.

Clean up¶

During this tutorial we have

• created a github repository
• added the required files for deployment
• deployed our application to NAIS

Now it's time to clean up after ourselves.

Delete your repository¶

When you are finished with this guide you can delete your repository:

gh repo delete <GITHUB-ORG>/<MY-APP>