Cloud Build Service Mesh Canary Traffic Shift

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Your DevOps engineering team is automating a zero-downtime infrastructure migration pipeline using Cloud Build. The pipeline provisions a target GKE cluster with Cloud Service Mesh alongside an existing GKE cluster hosting production microservices.

You need to implement a canary deployment strategy within the automated pipeline that safely shifts live user traffic in small increments to validate workload reliability on the new cluster while maintaining an immediate rollback mechanism.

Which strategy should you implement in your pipeline?

Configure a ServiceEntry on the source cluster pointing to the target cluster's ingress gateway, and use a VirtualService to route a small initial percentage of traffic to the target cluster before progressively increasing it.

Perform an immediate 100% blue/green traffic switch at the external Application Load Balancer backend service level with automated failover.

Execute an in-place deployment upgrade within the source cluster namespace and trigger an automated 'kubectl rollout undo' if failure metrics exceed threshold limits.

Configure weighted DNS routing records in Cloud DNS between the public IP addresses of the old and new cluster ingress gateways.

Professional Cloud DevOps Engineer

Cloud Build Service Mesh Canary Traffic Shift

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