okonomi / cloudrun-gradual-rollouts-example

Cloud Run gradual rollouts example

Setup:

gcloud components install beta -y
gcloud auth login
gcloud auth configure-docker
gcloud config set project [gcp-project-id]

Build image:

docker build -t rails-cloudrun-sandbox .

Run locally:

docker run --rm -it -p 3000:3000 -e PORT=3000 rails-cloudrun-sandbox

Push to GCR:

docker tag rails-cloudrun-sandbox gcr.io/[gcp-project-id]/rails-cloudrun-sandbox
docker push gcr.io/[gcp-project-id]/rails-cloudrun-sandbox

Deploy to Cloud Run(no traffic):

gcloud beta run deploy rails-cloudrun-sandbox \
    --platform managed \
    --image gcr.io/[gcp-project-id]/rails-cloudrun-sandbox \
    --allow-unauthenticated \
    --region asia-northeast2 \
    --no-traffic --tag "latest"

Get revision url:

set revision_url (gcloud beta run services describe rails-cloudrun-sandbox \
    --platform managed \
    --format json \
  | jq -r '.status.traffic[] | select(.tag == "latest").url')

Wait application ready:

while true
  set status_code (curl $revision_url -o /dev/null -w '%{http_code}' -s -m 10)

  if test "$status_code" = "200"
    break
  end
end

Switch traffic to latest:

gcloud beta run services update-traffic rails-cloudrun-sandbox \
    --platform managed \
    --to-latest