Bulat-Gumerov / devops-test-task

DevOps Engineer Challenge

Docker swarm

1. Check if Docker and Docker compose installed: docker --version && docker-compose --version
2. Launch the stack: docker-compose up -d
3. Open the browser and access the web app: http://localhost:3000
4. Open the browser and access the Grafana: http://localhost:3001, you can see the HTTP blackbox exporter and Redis dashboards with all the metrics.

Kubernetes:

1. Install Minikube: Get Minikube from their website and follow the installation instructions.
2. Start Minikube: Open your terminal and type minikube start to start the local Kubernetes cluster. Ensure it's up and running: minikube kubectl -- get pods -A
3. Allow minikube accessing local images: minikube -p minikube docker-env
4. Install Helm: Download and install Helm following their instructions.
5. Install the chart: helm install mychart ./mychart --namespace=default
6. Test the web app by port-forwarding the port 3000 to your computer, you can use Lens app for that. Access it using web browser or curl.
7. Port-forward grafana, access it using default credentials admin/admin and see the dashboards with all the metrics.
8. Scale down the web app deployment to zero by modifying values.yaml and upgrading helm release or manually: minikube kubectl -- scale --current-replicas=2 --replicas=0 deployment/mychart-mychart-web. Observe the metrics and graphs in the Grafana UI.

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