Question

Your team deployed a new revision of a Cloud Run service. You want to send only 10% of live traffic to the new revision while keeping 90% on the previous stable revision, so you can monitor error rates before a full rollout. Which action accomplishes this?

Accepted Answer

Run 'gcloud run services update-traffic' specifying the two revisions with --to-revisions and their respective percentages

Answer

Redeploy the service twice with '--max-instances' set proportionally to control the traffic percentages

Answer

Create two separate Cloud Run services and place an internal load balancer in front to split traffic 90/10

Answer

Use 'gcloud run deploy' with the '--no-traffic' flag, which automatically routes 10% of requests to the newest revision