Lab 06: Deploy, Operate, Rollback

Run software outside the editor and operate it like a real service.

1. Add environment-based configuration.
2. Add a /health endpoint.
3. Containerize the app or write a local deployment script.
4. Start the app from a clean terminal.
5. Hit /health.
6. Create a ticket through the deployed app.
7. Capture logs.
8. Break configuration intentionally.
9. Observe the failure.
10. Roll back to the working state.

For the starter project, use:

PORT=8090 SUPPORT_DESK_DB=/tmp/support-desk.sqlite3 python3 app.py
curl -i http://localhost:8090/health

• What artifact is deployed?
• What configuration is required?
• What secrets would be needed in production?
• What health check proves the app can receive traffic?
• What log line proves a ticket was created?
• What is the rollback path?

Create operate-runbook.md:

# Runbook

## Start

## Stop

## Config

## Health Check

## Logs

## Common Failures

## Rollback

Someone else can follow your runbook and operate the app.