Digital Ocean App Deployment

Create Kubernetes Cluster

• Menu -> Create Kubernetes Cluster
• Any Country
• Default VPC
• Cluster Capacity: 1GB node / 3 nodes
• No tags
• Choose name for the cluster

Management Tools

• doctl: Digital Ocean Control
• doctl repository with instructions for installation

# Install via snap
sudo snap install doctl

• Create a API key in Menu/API with any name with read/write permission
• Login to Digital Ocean

# Authenticate
doctl auth init # and paste the token

Create the DO context

# Create context
doctl kubernetes cluster kubeconfig save 'cluster-name'

# Select context
kubectl config use-context `context-name`

# Test context
kubectl get nodes

Create deploy scripts in GitHub Actions

name: deploy-myservice

on:
  push:
    branches:
      - master
    paths:
      - 'myservice/**'

jobs:
  build:
    runs-on: ubuntu-latest

    steps:
      - name: Setup repository
        uses: actions/checkout@v2

      - name: Build docker image
        run: docker build -t hvitoi/myservice myservice

      - name: Login to DockerHub
        run: docker login -u $DOCKER_USERNAME -p $DOCKER_PASSWORD
        env:
          DOCKER_USERNAME: ${{ secrets.DOCKER_USERNAME }}
          DOCKER_PASSWORD: ${{ secrets.DOCKER_PASSWORD }}

      - name: Push image to DockerHub
        run: docker push hvitoi/myservice

      - name: Setup Digital Ocean doctl
        uses: digitalocean/action-doctl@v2
        with:
          token: ${{ secrets.DIGITALOCEAN_ACCESS_TOKEN }}

      - name: Create kubectl context
        run: doctl kubernetes cluster kubeconfig save mycluster

      - name: Restart the deployment
        run: kubectl rollout restart deployment myservice-depl

name: deploy-manifests

on:
  push:
    branches:
      - master
    paths:
      - 'infra/**'

jobs:
  build:
    runs-on: ubuntu-latest

    steps:
      - name: Setup repository
        uses: actions/checkout@v2

      - name: Setup Digital Ocean doctl
        uses: digitalocean/action-doctl@v2
        with:
          token: ${{ secrets.DIGITALOCEAN_ACCESS_TOKEN }}

      - name: Create kubectl context
        run: doctl kubernetes cluster kubeconfig save mycluster

      - name: Apply all the config files to the Kubernetes cluster
        run: kubectl apply -f infra/k8s && kubectl apply -f infra/k8s-prod

Deploy Ingress Nginx

kubectl apply -f https://raw.githubusercontent.com/kubernetes/ingress-nginx/controller-v0.34.1/deploy/static/provider/do/deploy.yaml

Get Load Balancer ID

• At Networking / Load Balancers
• Ingress Nginx created a load balancers
• Get the load balancer ip

Destroy Cluster

• Networking/Load balancer - Destroy
• Kubernetes/Cluster - Destroy