Steven Rosales

Labs Portfolio

This section documents hands-on technical labs

Featured Labs

1. Coolify Self-Hosted DevOps Lab

Status: Completed

Focus areas:

• Coolify installation on Ubuntu Server
• SSH access from macOS to the Ubuntu VM
• Static IP configuration for stable VM access
• SSH port forwarding for local access to internal services
• Docker image deployment using traefik/whoami
• Docker Compose deployment through Coolify
• Traefik reverse proxy routing
• Host-based routing with local domains
• Docker networking with the external coolify network
• PostgreSQL and Adminer deployment
• Environment variables for database initialization
• Docker volumes and persistent storage
• Database validation with psql
• Troubleshooting Docker permissions, Traefik 404 routing, NAT access, and SSH tunnels

Related page:

• View Coolify Self-Hosted DevOps Lab

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2. Kubernetes Local Lab on Mac

Status: In progress

This lab documents a local Kubernetes environment on macOS using Docker, kind, and kubectl. It focuses on understanding Kubernetes fundamentals, deploying containerized applications, validating services, and troubleshooting common workload issues.

Focus areas:

• Local Kubernetes cluster using kind
• Docker containerization
• Kubernetes deployments
• Kubernetes services
• Health checks and application validation
• Pod logs and events
• Rollouts and restarts
• Basic troubleshooting with kubectl
• Local development workflow for Kubernetes applications

Related page:

• View Kubernetes Local Lab on Mac

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3. End-to-End DevOps Lab: Node.js App on Docker, Kubernetes, Jenkins, GitHub Actions, and Terraform

Status: In progress

Focus areas:

• Node.js application deployment
• Docker containerization
• Kubernetes deployment
• Kubernetes services and health checks
• Terraform automation
• Jenkins CI/CD pipeline
• GitHub Actions CI validation
• Deployment troubleshooting

Related page:

• Kubernetes Local Lab on Mac

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4. SaaS Technical Implementation Lab: Django, PostgreSQL, REST APIs, CSV Imports, and Webhooks

Status: In progress

Focus areas:

• Django backend
• PostgreSQL database
• REST API CRUD endpoints
• API key authentication
• CSV import validation
• SaaS support troubleshooting
• Customer implementation workflows
• Backend debugging

This lab demonstrates technical support and implementation skills for SaaS environments.

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5. Self-Hosted SaaS Infrastructure Lab

Status: Planned

Focus areas:

• Linux server administration
• Docker Compose
• Reverse proxy
• SSL/TLS
• Environment variables
• Persistent volumes
• PostgreSQL
• Redis
• Backups
• Monitoring
• Logging
• Deployment workflows

This lab is designed to simulate a startup-style self-hosted production environment.

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6. Monitoring and Alerting Lab

Status: Planned

Focus areas:

• Prometheus
• Grafana
• Uptime Kuma
• Node Exporter
• Application health checks
• Dashboards
• Alerting
• Incident response

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7. Backup and Disaster Recovery Lab

Status: Planned

Focus areas:

• PostgreSQL backups
• Redis persistence
• Automated backup scripts
• Restore testing
• Disaster recovery documentation
• Recovery time validation

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These labs are designed to show not only tool knowledge, but also operational thinking: how to deploy systems, validate services, troubleshoot failures, improve reliability, and support production-style environments.