DevOps VProfile Lab — Manual → Automation → Monitoring

This monorepo documents my journey from manual provisioning to automated builds and monitoring for a multi-tier Java web application.

What’s inside (current)

• project-1-manual/ — SSH-based manual setup (per host) with exact commands I ran.
• docs/ — architecture notes and ports.

Next steps will add:

• project-2-automation/ — shell-scripted provisioning with Vagrant provisioners.
• project-3-monitoring-nagios/ — Nagios Core + NRPE checks for the same stack.

Stack & order

• Services: Nginx (web), Tomcat (app), RabbitMQ (broker), Memcached (cache), MySQL (DB).
• Bring-up order: MySQL → Memcached → RabbitMQ → Tomcat → Nginx (so dependencies are ready first).

Quickstart (Project 1)

1. Ensure you have VirtualBox and Vagrant installed.
2. Install the host manager plugin (on your workstation):
   vagrant plugin install vagrant-hostmanager
3. Use the provided commands per host under project-1-manual/commands/ (or adapt to your environment).

⚠️ Replace any sample credentials (e.g., admin123) with your own. Do not commit secrets. Use a local .env (git-ignored) for real values.

Folder layout

devops-vprofile-lab/
├─ README.md
├─ .gitignore
├─ docs/
│  └─ architecture.md
└─ project-1-manual/
   ├─ README.md
   └─ commands/
      ├─ db01_mysql.md
      ├─ mc01_memcache.md
      ├─ rmq01_rabbitmq.md
      ├─ app01_tomcat.md
      └─ web01_nginx.md

Why manual first?

Doing it by hand once makes the automation spec obvious. Each command becomes a line in a script with idempotence and error handling—then we validate it with monitoring.