Canary Deployment

Table of Contents

• [Overview](#overview)
• [When to Use](#when-to-use)
• [Quick Start](#quick-start)
• [Reference Guides](#reference-guides)
• [Best Practices](#best-practices)

Overview

Deploy new versions gradually to a small percentage of users, monitor metrics for issues, and automatically rollback or proceed based on predefined thresholds.

When to Use

• Low-risk gradual rollouts
• Real-world testing with live traffic
• Automatic rollback on errors
• User impact minimization
• A/B testing integration
• Metrics-driven deployments
• High-traffic services

Quick Start

Minimal working example:

# canary-deployment-istio.yaml
apiVersion: apps/v1
kind: Deployment
metadata:
  name: myapp-v1
  namespace: production
spec:
  replicas: 3
  selector:
    matchLabels:
      app: myapp
      version: v1
  template:
    metadata:
      labels:
        app: myapp
        version: v1
    spec:
      containers:
        - name: myapp
          image: myrepo/myapp:1.0.0
          ports:
            - containerPort: 8080

---
// ... (see reference guides for full implementation)

Reference Guides

Detailed implementations in the references/ directory:

Best Practices

✅ DO

• Follow established patterns and conventions
• Write clean, maintainable code
• Add appropriate documentation
• Test thoroughly before deploying

❌ DON'T

• Skip testing or validation
• Ignore error handling
• Hard-code configuration values