Hands-On Microservices with Kubernetes

Rolling back canary deployments

Canary deployments are arguably even simpler to roll back. The majority of your pods run the tried and true version. The canary deployment's pods serve just a small amount of requests. If you detect that something is wrong with the canary deployment, simply delete the deployment. Your main deployment will keep serving incoming requests. If necessary (for example, your canary deployment served a small but significant amount of traffic), you can scale up your main deployment to make up for the canary pods that are no longer there.