# Deployment Guide

## Pre-flight checklist

- [ ] All tests pass in CI
- [ ] Release tag created in Git
- [ ] Changelog updated
- [ ] Rollback plan documented in the release ticket

## Steps

1. Pull the release artifact from S3:
   ```
   aws s3 cp s3://nexus-releases/<version>.tar.gz ./dist.tar.gz
   tar -xzf dist.tar.gz -C ./dist/
   ```

2. Run the deploy script:
   ```
   ./scripts/deploy.sh <version>
   ```

3. Verify with health checks:
   ```
   ./scripts/health-check.sh
   ```

4. If anything fails, roll back immediately:
   ```
   ./scripts/rollback.sh
   ```

## Emergency contacts

- On-call engineer: PagerDuty rotation
- Infra lead: t.brenner@nexus.local
- SRE: o.neumann@nexus.local