Canary Deployment in Kubernetes | Step-by-Step Demo (90/10 Traffic Split Explained)
Learn how Canary Deployment in Kubernetes works with a simple step-by-step demo, where we gradually shift traffic from a stable version to a new version using a practical 90/10 traffic split approach. In this Kubernetes tutorial, you’ll understand how Kubernetes Services handle traffic distribution, why canary releases are important in DevOps, and how to safely roll out application updates in real production-like scenarios without impacting all users at once. This tutorial is perfect for system administrators, DevOps engineers, and beginners who want to learn Kubernetes deployment strategies like canary, blue-green, and rolling updates with real examples.
✔️ Understand Canary Deployment in Kubernetes with real demo
🔥 Learn how 90/10 traffic split works using pod replicas
✔️ See how Kubernetes Services distribute traffic across pods
🚀 Perform gradual rollout and safe rollback in real time
✔️ Perfect for DevOps engineers, SysAdmins & Kubernetes beginners
🐦 Canary Deployment Chapters
0:00 - 🚀 Introduction to Canary Strategy
0:32 - ⚠️ The Risk of "Big Bang" Releases
1:21 - 💡 Defining Canary Deployment
2:06 - 🦜 Why "Canary"? (A History of Coal Mining)
2:56 - 🏗️ Canary Architecture in Kubernetes
3:54 - ⚖️ How Traffic Splitting Works (Random vs. Weighted)
4:57 - 📝 Step-by-Step Canary Workflow
5:57 - ✅ Top Benefits of Canary Releases
6:59 - 🚧 Real-world Challenges and Tooling (Istio, Ingress)
8:27 - 🏢 Common Industry Use Cases
9:38 - 📊 Blue-Green vs. Canary Deployment Comparison
10:44 - 🛠️ Implementation Methods in Kubernetes
11:57 - 🧪 Practical Demo Setup & Strategy
12:59 - 💻 Terminal: Deploying Stable Version (v1)
14:59 - 🌐 Testing Baseline Traffic
16:10 - 🟡 Terminal: Introducing the Canary Version (v2)
17:07 - 📉 Analyzing the 90/10 Traffic Split
18:45 - 📈 Scaling Up the Canary (Increasing Traffic)
20:24 - 🏁 Completing the Full Rollout
21:22 - 🔙 Simulating a Failure and Rollback
22:52 - 🧹 Cleanup and Resource Deletion
24:08 - 🏁 Key Takeaways and Final Summary
📌 Watch the Full Kubeadm Labs Playlist:
If you want to continue learning and building real multi-node Kubernetes clusters, check out our full playlist: [ • Kubernetes Real-World Labs (kubeadm) ]
🧾 Commands Used in This Video
Pull image
sudo ctr -n k8s.io images pull docker.io/hashicorp/http-echo:latest
Apply deployments & service
kubectl apply -f v1-deployment.yaml
kubectl apply -f v2-deployment.yaml
kubectl apply -f service.yaml
Verify resources
kubectl get deploy
kubectl get pods
kubectl get svc
Test traffic
while true; do curl -s http://NODE-IP:30007; echo; sleep 1; done
Scale deployments
kubectl scale deployment myapp-v2 --replicas=5
kubectl scale deployment myapp-v2 --replicas=10
kubectl scale deployment myapp-v1 --replicas=0
Rollback
kubectl scale deployment myapp-v1 --replicas=9
kubectl scale deployment myapp-v2 --replicas=0
💻 GitHub Lab & Commands:
All commands and YAML files used in this video are available here:
Canary Deployment in Kubernetes Lab 👉 https://github.com/Sagar-CloudNative/...
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