GitLab and Telegram integration

Automated Kubernetes testing with Robot Framework, ArgoCD & with KinD lifecycle

Overview This n8n workflow provides automated CI/CD testing for Kubernetes applications using KinD (Kubernetes in Docker). It creates temporary infrastructure, runs tests, and cleans up everything automatically. Three-Phase Lifecycle INIT Phase - Infrastructure Setup Installs dependencies (sshpass, Docker, KinD) Creates KinD cluster Installs Helm and Nginx Ingress Installs HAProxy for port forwarding Deploys ArgoCD Applies ApplicationSet TEST Phase - Automated Testing Downloads Robot Framework test script from GitLab Installs Robot Framework and Browser library Executes automated browser tests Packages test results Sends results via Telegram DESTROY Phase - Complete Cleanup Removes HAProxy Deletes KinD cluster Uninstalls KinD Uninstalls Docker Sends completion notification Execution Modes Full Pipeline Mode (progress_only = false) > Automatically progresses through all phases: INIT → TEST → DESTROY Single Phase Mode (progress_only = true) > Executes only the specified phase and stops Prerequisites Local Environment (n8n Host) n8n instance version 1.0 or higher Community node n8n-nodes-robotframework installed Network access to target host and GitLab Minimum 4 GB RAM, 20 GB disk space Remote Target Host Linux server (Ubuntu, Debian, CentOS, Fedora, or Alpine) SSH access with sudo privileges Minimum 8 GB RAM (16 GB recommended) 20 GB free disk space Open ports: 22, 80, 60080, 60443, 56443 External Services GitLab account with OAuth2 application Repository with test files (test.robot, config.yaml, demo-applicationSet.yaml) Telegram Bot for notifications Telegram Chat ID Setup Instructions Step 1: Install Community Node In n8n web interface, navigate to Settings → Community Nodes Install n8n-nodes-robotframework Restart n8n if prompted Step 2: Configure GitLab OAuth2 Create GitLab OAuth2 Application Log in to GitLab Navigate to User Settings → Applications Create new application with redirect URI: https://your-n8n-instance.com/rest/oauth2-credential/callback Grant scopes: read_api, read_repository, read_user Copy Application ID and Secret Configure in n8n Create new GitLab OAuth2 API credential Enter GitLab server URL, Client ID, and Secret Connect and authorize Step 3: Prepare GitLab Repository Create repository structure: your-repo/ ├── test.robot ├── config.yaml ├── demo-applicationSet.yaml └── .gitlab-ci.yml Upload your: Robot Framework test script KinD cluster configuration ArgoCD ApplicationSet manifest Step 4: Configure Telegram Bot Create Bot Open Telegram, search for @BotFather Send /newbot command Save the API token Get Chat ID For personal chat: Send message to your bot Visit: https://api.telegram.org/bot<YOUR_TOKEN>/getUpdates Copy the chat ID (positive number) For group chat: Add bot to group Send message mentioning the bot Visit getUpdates endpoint Copy group chat ID (negative number) Configure in n8n Create Telegram API credential Enter bot token Save credential Step 5: Prepare Target Host Verify SSH access: Test connection: ssh -p <port> <username>@<host_ip> Verify sudo: sudo -v The workflow will automatically install dependencies. Step 6: Import and Configure Workflow Import Workflow Copy workflow JSON In n8n, click Workflows → Import from File/URL Import the JSON Configure Parameters Open Set Parameters node and update: | Parameter | Description | Example | |-----------|-------------|---------| | target_host | IP address of remote host | 192.168.1.100 | | target_port | SSH port | 22 | | target_user | SSH username | ubuntu | | target_password | SSH password | your_password | | progress | Starting phase | INIT, TEST, or DESTROY | | progress_only | Execution mode | true or false | | KIND_CONFIG | Path to config.yaml | config.yaml | | ROBOT_SCRIPT | Path to test.robot | test.robot | | ARGOCD_APPSET | Path to ApplicationSet | demo-applicationSet.yaml | > Security: Use n8n credentials or environment variables instead of storing passwords in the workflow. Configure GitLab Nodes For each of the three GitLab nodes: Set Owner (username or organization) Set Repository name Set File Path (uses parameter from Set Parameters) Set Reference (branch: main or master) Select Credentials (GitLab OAuth2) Configure Telegram Nodes Send ROBOT Script Export Pack node: Set Chat ID Select Credentials Process Finish Report node: Update chat ID in command Step 7: Test and Execute Test individual components first Run full workflow Monitor execution (30-60 minutes total) How to Use Execution Examples Complete Testing Pipeline progress = "INIT" progress_only = "false" Flow: INIT → TEST → DESTROY Setup Infrastructure Only progress = "INIT" progress_only = "true" Flow: INIT → Stop Test Existing Infrastructure progress = "TEST" progress_only = "false" Flow: TEST → DESTROY Cleanup Only progress = "DESTROY" Flow: DESTROY → Complete Trigger Methods 1. Manual Execution Open workflow in n8n Set parameters Click Execute Workflow 2. Scheduled Execution Open Schedule Trigger node Configure time (default: 1 AM daily) Ensure workflow is Active 3. Webhook Trigger Configure webhook in GitLab repository Add webhook URL to GitLab CI Monitoring Execution In n8n Interface: View progress in Executions tab Watch node-by-node execution Check output details Via Telegram: Receive test results after TEST phase Receive completion notification after DESTROY phase Execution Timeline: | Phase | Duration | |-------|----------| | INIT | 15-25 minutes | | TEST | 5-10 minutes | | DESTROY | 5-10 minutes | Understanding Test Results After TEST phase, receive testing-export-pack.tar.gz via Telegram containing: log.html - Detailed test execution log report.html - Test summary report output.xml - Machine-readable results screenshots/ - Browser screenshots To view: Download .tar.gz from Telegram Extract: tar -xzf testing-export-pack.tar.gz Open report.html for summary Open log.html for detailed steps Success indicators: All tests marked PASS Screenshots show expected UI states No error messages in logs Failure indicators: Tests marked FAIL Error messages in logs Unexpected UI states in screenshots Configuration Files test.robot Robot Framework test script structure: Uses Browser library Connects to http://autotest.innersite Logs in with autotest/autotest Takes screenshots Runs in headless Chromium config.yaml KinD cluster configuration: 1 control-plane node 1 worker node Port mappings: 60080 (HTTP), 60443 (HTTPS), 56443 (API) Kubernetes version: v1.30.2 demo-applicationSet.yaml ArgoCD Application manifest: Points to Git repository Automatic sync enabled Deploys to default namespace gitlab-ci.yml Triggers n8n workflow on commits: Installs curl Sends POST request to webhook Troubleshooting SSH Permission Denied Symptoms: Error: Permission denied (publickey,password) Solutions: Verify password is correct Check SSH authentication method Ensure user has sudo privileges Use SSH keys instead of passwords Docker Installation Fails Symptoms: Error: Package docker-ce is not available Solutions: Check OS version compatibility Verify network connectivity Manually add Docker repository KinD Cluster Creation Timeout Symptoms: Error: Failed to create cluster: timed out Solutions: Check available resources (RAM/CPU/disk) Verify Docker daemon status Pre-pull images Increase timeout ArgoCD Not Accessible Symptoms: Error: Failed to connect to autotest.innersite Solutions: Check HAProxy status: systemctl status haproxy Verify /etc/hosts entry Check Ingress: kubectl get ingress -n argocd Test port forwarding: curl http://127.0.0.1:60080 Robot Framework Tests Fail Symptoms: Error: Chrome failed to start Solutions: Verify Chromium installation Check Browser library: rfbrowser show-trace Ensure correct executablePath in test.robot Install missing dependencies Telegram Notification Not Received Symptoms: Workflow completes but no message Solutions: Verify Chat ID Test Telegram API manually Check bot status Re-add bot to group Workflow Hangs Symptoms: Node shows "Executing..." indefinitely Solutions: Check n8n logs Test SSH connection manually Verify target host status Add timeouts to commands Best Practices Development Workflow Test locally first Run Robot Framework tests on local machine Verify test script syntax Version control Keep all files in Git Use branches for experiments Tag stable versions Incremental changes Make small testable changes Test each change separately Backup data Export workflow regularly Save test results Store credentials securely Production Deployment Separate environments Dev: Frequent testing Staging: Pre-production validation Production: Stable scheduled runs Monitoring Set up execution alerts Monitor host resources Track success/failure rates Disaster recovery Document cleanup procedures Keep backup host ready Test restoration process Security Use SSH keys Rotate credentials quarterly Implement network segmentation Maintenance Schedule | Frequency | Tasks | |-----------|-------| | Daily | Review logs, check notifications | | Weekly | Review failures, check disk space | | Monthly | Update dependencies, test recovery | | Quarterly | Rotate credentials, security audit | Advanced Topics Custom Configurations Multi-node clusters: Add more worker nodes for production-like environments Configure resource limits Add custom port mappings Advanced testing: Load testing with multiple iterations Integration testing for full deployment pipeline Chaos engineering with failure injection Integration with Other Tools Monitoring: Prometheus for metrics collection Grafana for visualization Logging: ELK stack for log aggregation Custom dashboards CI/CD Integration: Jenkins pipelines GitHub Actions Custom webhooks Resource Requirements Minimum | Component | CPU | RAM | Disk | |-----------|-----|-----|------| | n8n Host | 2 | 4 GB | 20 GB | | Target Host | 4 | 8 GB | 20 GB | Recommended | Component | CPU | RAM | Disk | |-----------|-----|-----|------| | n8n Host | 4 | 8 GB | 50 GB | | Target Host | 8 | 16 GB | 50 GB | Useful Commands KinD List clusters: kind get clusters Get kubeconfig: kind get kubeconfig --name automate-tst Export logs: kind export logs --name automate-tst Docker List containers: docker ps -a --filter "name=automate-tst" Enter control plane: docker exec -it automate-tst-control-plane bash View logs: docker logs automate-tst-control-plane Kubernetes Get all resources: kubectl get all -A Describe pod: kubectl describe pod -n argocd <pod-name> View logs: kubectl logs -n argocd <pod-name> --follow Port forward: kubectl port-forward -n argocd svc/argocd-server 8080:80 Robot Framework Run tests: robot test.robot Run specific test: robot -t "Test Name" test.robot Generate report: robot --outputdir results test.robot Additional Resources Official Documentation n8n: https://docs.n8n.io KinD: https://kind.sigs.k8s.io ArgoCD: https://argo-cd.readthedocs.io Robot Framework: https://robotframework.org Browser Library: https://marketsquare.github.io/robotframework-browser Community n8n Community: https://community.n8n.io Kubernetes Slack: https://kubernetes.slack.com ArgoCD Slack: https://argoproj.github.io/community/join-slack Robot Framework Forum: https://forum.robotframework.org Related Projects k3s: Lightweight Kubernetes distribution minikube: Local Kubernetes alternative Flux CD: Alternative GitOps tool Playwright: Alternative browser automation