Question

During a canary release, what specific action must the orchestration system perform automatically if the performance metrics of the new version deviate from defined thresholds?

Accepted Answer

When performance metrics for a canary release deviate from defined thresholds, the orchestration system must automatically perform an automated rollback. A canary release is a deployment strategy where a new version of an application is rolled out to a small subset of users to test its stability before a full release. The orchestration system, which is the software responsible for managing the lifecycle and distribution of application containers, continuously monitors key performance indicators such as error rates, latency, or CPU usage. If these metrics exceed pre-set thresholds, the system immediately terminates the instances of the new version and restores traffic to the previous, stable version. This process ensures that the impact of a faulty deployment is contained to a minimal number of users and that the service remains operational without manual intervention. For example, if a new update causes a service to crash for 5 percent of traffic, the orchestrator detects the increased error count and instantly reroutes all incoming requests back to the original, functioning version to maintain system availability.

Home → All Courses → Engineering and Technology Courses → DevOps Engineering and Continuous Delivery → Flashcard

During a canary release, what specific action must the orchestration system perform automatically if the performance metrics of the new version deviate from defined thresholds?