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GCP Professional Cloud Architect Practice Question

Your team operates a global e-commerce platform on Google Kubernetes Engine (GKE). New versions are rolled out with Cloud Deploy using a canary strategy that shifts traffic from 1 % to 100 % over 30 minutes. The SRE lead asks you to ensure that any deployment automatically rolls back if the percentage of HTTP 5xx responses recorded in Cloud Logging rises above 2 % for two consecutive minutes, eliminating the need for human intervention. Which approach best meets this requirement while following the operational excellence principle of automating responses to common operational events?

  • Use Error Reporting to open a P1 incident when exception counts spike and have the on-call engineer execute a gcloud deploy rollback command.

  • Schedule a Cloud Scheduler job that invokes a Cloud Run service to scale the canary deployment to zero when 5xx errors exceed 2 %, then manually re-enable the service after investigation.

  • Configure a Cloud Build trigger that runs every minute, queries Cloud Logging for 5xx rates, and, if above threshold, executes gcloud container clusters rollback for the canary workload.

  • Create a logs-based metric for 5xx errors, configure a Cloud Monitoring alert to publish to Pub/Sub when the 2 % threshold is exceeded for two minutes, and trigger a Cloud Function that calls the Cloud Deploy API to promote the previous release.

GCP Professional Cloud Architect
Ensuring solution and operations excellence
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