# Runbook / Operations Guide

## Service Overview
**Service Name:** [Name]  
**Owner Team:** [Team]  
**On-Call:** [How to reach]  
**PagerDuty Integration:** [Link if applicable]

## Service Architecture
- High-level system diagram
- Key components and their purpose
- Dependencies (internal and external services)
- Data flow overview

## Deployment

### Environments
- Production environment details
- Staging environment details
- Development environment details

### How to Deploy
- Deployment process step-by-step
- CI/CD pipeline overview
- Approval requirements
- Rollback procedure
- Deployment checklist

### Monitoring Post-Deployment
- Key metrics to verify
- Health checks
- Expected log messages
- Alert verification

## Common Operations

### Starting the Service
- Prerequisites
- Startup commands
- Verification steps
- Startup time expectations

### Stopping the Service
- Graceful shutdown procedure
- Connection draining
- Backup considerations
- Shutdown verification

### Configuration Management
- Configuration file locations
- Environment variables
- How to reload configuration without restart
- Configuration validation

### Database Operations
- Connection details
- Backup/restore procedures
- Migration process
- Replication monitoring (if applicable)

## Troubleshooting Guide

### Symptom: [Issue 1]
**Indicators:**
- Log messages to look for
- Metric anomalies
- User-facing symptoms

**Diagnosis:**
- How to verify the issue
- Relevant commands to run
- Where to check logs

**Resolution:**
- Step-by-step fix procedure
- Workarounds if permanent fix unavailable
- Prevention measures

### Symptom: [Issue 2]
[Same structure as above]

## Performance & Scaling

### Current Capacity
- Current load metrics
- Resource utilization
- Scaling limits

### Scaling Procedures
- How to scale horizontally
- How to scale vertically
- Load balancer configuration
- Cache invalidation (if needed)

### Performance Optimization
- Known bottlenecks
- Tuning parameters
- Caching strategies

## Monitoring & Alerts

### Key Dashboards
- Dashboard names and links
- What each dashboard monitors
- Expected ranges for key metrics

### Critical Alerts
| Alert Name | Threshold | Action | Escalation |
|------------|-----------|--------|-----------|
| [Alert 1] | [Condition] | [Steps] | [Next step] |
| [Alert 2] | [Condition] | [Steps] | [Next step] |

### Log Locations
- Application logs path
- Error logs path
- Access logs path
- How to tail logs remotely

### Metrics & KPIs
- Response time SLO
- Error rate threshold
- Throughput capacity
- Custom metrics to monitor

## Incident Response

### Page Escalation
- Who to page first
- Escalation procedure
- Communication channels
- Status page updates

### Common Incident Scenarios
- Database connectivity loss
- External dependency failure
- Memory leak symptoms and response
- High latency symptoms and response

### Postmortem Process
- How to trigger postmortem
- Documentation requirements
- Blameless culture note

## Maintenance & Upgrades

### Scheduled Maintenance
- Maintenance windows
- User notification procedures
- Expected downtime
- Verification steps

### Dependency Updates
- Update frequency
- Testing requirements
- Rollback plan
- Security patch procedure

### Data Cleanup
- Retention policies
- How to run cleanup jobs
- Impact of cleanup operations

## Runbook Verification
- Last verified: [Date]
- Verified by: [Name]
- Next review due: [Date]