# Incident Response Runbook
## Quick Reference
**Severity Levels:**
- P0 (Critical): Complete outage, data loss, security breach- P1 (High): Major feature down, significant user impact- P2 (Medium): Minor feature degradation, limited user impact- P3 (Low): Cosmetic issues, minimal user impact
**Response Times:**
- P0: Immediate (24/7)- P1: 15 minutes (business hours), 1 hour (after hours)- P2: 4 hours (business hours)- P3: Next business day
**Escalation Contacts:**
- On-call Engineer: PagerDuty rotation- Engineering Manager: +1-555-0100- VP Engineering: +1-555-0101- CTO: +1-555-0102
// ... (see reference guides for full implementation)```
## Reference Guides
Detailed implementations in the `references/` directory:
| Guide | Contents ||---|---|| [Symptoms](references/symptoms.md) | Symptoms, Severity: P0 (Critical), Initial Response (5 minutes) || [Investigation Steps](references/investigation-steps.md) | Investigation Steps || [Resolution Steps](references/resolution-steps.md) | Resolution Steps || [Verification](references/verification.md) | Verification || [Communication](references/communication.md) | Communication || [Post-Incident](references/post-incident.md) | Post-Incident |
## Best Practices
### ✅ DO
- Include quick reference section at top- Provide exact commands to run- Document expected outputs- Include verification steps- Add communication templates- Define severity levels clearly- Document escalation paths- Include useful links and contacts- Keep runbooks up-to-date- Test runbooks regularly- Include screenshots/diagrams- Document common gotchas
### ❌ DON'T
- Use vague instructions- Skip verification steps- Forget to document prerequisites- Assume knowledge of tools- Skip communication guidelines- Forget to update after incidents