Deployment Strategies: Blue-Green and Canary
Go beyond rolling updates and learn how to release safely with blue-green and canary deployment patterns in Kubernetes.
Why More Than Rolling Updates?
Rolling updates replace Pods gradually, but they mix old and new versions during the transition. For risky releases you may want full control over which users see the new version.
Blue-green and canary strategies give you that control.
The Blue-Green Idea
In a blue-green deployment you run two identical environments:
- Blue = current live version
- Green = new version, fully deployed but not yet receiving traffic
You flip traffic from blue to green all at once.
All lessons in this course
- Understanding Deployments
- Scaling Applications with ReplicaSets
- Rolling Updates and Rollbacks
- Deployment Strategies: Blue-Green and Canary