Question

Your team uses Cloud Deploy to roll out a Cloud Run service using a canary strategy with 25% and 50% phases. Product management requires that promotion beyond the first canary phase must only occur if application-level error rates (measured via Cloud Monitoring) stay below a threshold for 15 minutes. The built-in verify step only runs a synthetic smoke test and does not evaluate this metric. What is the most appropriate way to enforce this metric-based gate within the Cloud Deploy pipeline?

Accepted Answer

Configure a deploy hook (postdeploy) that queries the Cloud Monitoring API for the error rate over 15 minutes and fails the phase if the threshold is exceeded, preventing automatic promotion.

Answer

Add an Automation rule with an 'advance' rollout automation that only promotes after a fixed 15-minute wait, assuming the metric will pass.

Answer

Enable Binary Authorization on the target so images with high error rates are blocked from promotion.

Answer

Switch the strategy to blue-green so the metric can be evaluated on the entire pool before cutting over traffic.