Add workflow to use loadbalancer as a tunnel to juju controller on k8s #19
Workflow file for this run
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| name: Tunnel to Juju controller via load balancer on k8s | |
| on: | |
| pull_request: | |
| paths-ignore: | |
| - "README.md" | |
| - "project-docs/**" | |
| push: | |
| branches: | |
| - "main" | |
| paths-ignore: | |
| - "README.md" | |
| - "project-docs/**" | |
| # Testing only needs permissions to read the repository contents. | |
| permissions: | |
| contents: read | |
| jobs: | |
| # Ensure project builds before running testing matrix | |
| build: | |
| name: Build | |
| runs-on: ubuntu-latest | |
| timeout-minutes: 5 | |
| steps: | |
| - uses: actions/checkout@v4 | |
| - uses: actions/setup-go@v4 | |
| - run: go build -v . | |
| # Run acceptance tests in a matrix with Terraform CLI versions | |
| add-machine-test: | |
| name: Add Machine | |
| needs: build | |
| runs-on: ubuntu-latest | |
| env: | |
| ACTIONS_ALLOW_IPV6: false | |
| strategy: | |
| fail-fast: false | |
| matrix: | |
| # Only on lxd | |
| cloud: | |
| - "microk8s" | |
| terraform: | |
| - "1.5.*" | |
| timeout-minutes: 60 | |
| steps: | |
| - uses: actions/checkout@v4 | |
| - uses: actions/setup-go@v4 | |
| with: | |
| go-version-file: "go.mod" | |
| cache: true | |
| # set up terraform | |
| - uses: hashicorp/setup-terraform@v2 | |
| with: | |
| terraform_version: ${{ matrix.terraform }} | |
| terraform_wrapper: false | |
| # set up snap, lxd, tox, Juju, bootstrap a controller, etc. | |
| - name: Setup operator environment | |
| uses: charmed-kubernetes/actions-operator@main | |
| with: | |
| provider: ${{ matrix.cloud }} | |
| juju-channel: 2.9/stable | |
| - run: go mod download | |
| - name: "Bring up loadbalancer & access via terraform plan" | |
| run: | | |
| echo "Controller:" | |
| juju show-controller | |
| echo "Determine Juju details" | |
| CONTROLLER=$(juju whoami --format yaml | yq .controller) | |
| JUJU_USERNAME=$(juju show-controller | yq .$CONTROLLER.account.user) | |
| JUJU_PASSWORD=$(cat ~/.local/share/juju/accounts.yaml | yq .controllers.$CONTROLLER.password) | |
| JUJU_CA_CERT=$(juju show-controller | yq .$CONTROLLER.details.ca-cert) | |
| # Ensure Juju controller name | |
| echo "Controller name: $CONTROLLER" | |
| echo "Juju Username: $JUJU_USERNAME" | |
| # Enable Ingress in MicroK8s | |
| sudo microk8s enable ingress | |
| echo "Ingress enabled." | |
| # Determine a subnet for MetalLB | |
| subnet="$(ip route get 1 | head -n 1 | awk '{print $7}' | awk -F. '{print $1 "." $2 "." $3 ".240/24"}')" | |
| echo "MetalLB subnet: $subnet" | |
| # Add the current user to the microk8s group | |
| echo "Adding current user to the microk8s group" | |
| sudo usermod -a -G microk8s $(whoami) | |
| chown -R $(whoami) ~/.kube | |
| # Apply changes to group membership | |
| newgrp microk8s | |
| /snap/microk8s/current/usr/bin/env | |
| # Display services layout | |
| echo "Services layout:" | |
| sudo microk8s.kubectl get services -n controller-$CONTROLLER | |
| # Create a LoadBalancer service | |
| sudo microk8s.kubectl apply -f - <<EOF | |
| apiVersion: v1 | |
| kind: Service | |
| metadata: | |
| name: controller-service-lb | |
| namespace: controller-$CONTROLLER | |
| spec: | |
| ipFamilies: | |
| - IPv4 | |
| ipFamilyPolicy: SingleStack | |
| ports: | |
| - name: api-server | |
| port: 17070 | |
| protocol: TCP | |
| targetPort: 17070 | |
| selector: | |
| app.kubernetes.io/name: controller | |
| sessionAffinity: None | |
| type: LoadBalancer | |
| EOF | |
| echo "Load Balancer service created." | |
| # Display services layout with the Load Balancer | |
| echo "Services layout with the Load Balancer:" | |
| sudo microk8s.kubectl get services -n controller-$CONTROLLER | |
| # Get the external IP of the Load Balancer service | |
| LB_IP="$(sudo microk8s.kubectl get services -n controller-$CONTROLLER controller-service-lb -o=jsonpath='{.status.loadBalancer.ingress[0].ip}')" | |
| echo "Load Balancer IP: $LB_IP" | |
| # Write a Terraform configuration file | |
| echo " | |
| provider \"juju\" { | |
| controller_addresses = [\"$LB_IP\"] | |
| username = $JUJU_USERNAME | |
| password = $JUJU_PASSWORD | |
| ca_certificate = <<-EOT | |
| $JUJU_CA_CERT | |
| EOT | |
| } | |
| resource \"juju_model\" \"testmodel\" { | |
| name = \"test-model\" | |
| } | |
| resource \"juju_application\" \"testapp\" { | |
| name = \"ubuntu\" | |
| model = juju_model.testmodel.name | |
| charm { | |
| name = \"ubuntu\" | |
| } | |
| } | |
| " > ./terraform_config.tf | |
| # Initialize and apply Terraform | |
| echo "Initializing Terraform..." | |
| terraform init | |
| echo "Planning Terraform changes..." | |
| terraform plan | |
| echo "Applying Terraform changes..." | |
| terraform apply --auto-approve | |
| Cleanup: Remove Terraform configuration file | |
| rm ./terraform_config.tf | |