Allowing public (unauthenticated) access

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Console

1. Go to Cloud Run

2. Click Create Service if you are configuring a new service, then fill out the initial service settings page as needed. If you are configuring an existing service, click the service, then click Security.

3. Clear Use Cloud IAM to authenticate incoming requests.

4. Click Create or Save.

gcloud

• For a new service, use the gcloud run deploy command with the --no-invoker-iam-check flag:

  gcloud run deploy SERVICE_NAME --no-invoker-iam-check

  where SERVICE_NAME is the service name.

• For an existing service, use the gcloud run services update command with the --no-invoker-iam-check flag:

  gcloud run services update SERVICE_NAME --no-invoker-iam-check

  where SERVICE_NAME is the service name.

YAML

1. To view and download the configuration:

   gcloud run services describe SERVICE --format export > service.yaml

2. Update the run.googleapis.com/invoker-iam-disabled: annotation:

   apiVersion: serving.knative.dev/v1
   kind: Service
   metadata:
       annotations:
         run.googleapis.com/invoker-iam-disabled: true
       name: SERVICE_NAME

   where SERVICE_NAME is the name of your Cloud Run service.

3. Replace the service with its new configuration using the following command:

   gcloud run services replace service.yaml

Console

1. Go to Cloud Run

2. Click the service, then click Security.

3. Select Use Cloud IAM to authenticate incoming requests.

4. Click Save.

gcloud

• Update the service by passing the --invoker-iam-check flag:

  gcloud run services update SERVICE_NAME --invoker-iam-check

  where SERVICE_NAME is the service name.

YAML

1. To view and download the configuration:

   gcloud run services describe SERVICE --format export > service.yaml

2. Update the run.googleapis.com/invoker-iam-disabled: annotation:

   apiVersion: serving.knative.dev/v1
    kind: Service
    metadata:
       annotations:
          run.googleapis.com/invoker-iam-disabled: false
       name: SERVICE_NAME

   where SERVICE_NAME is the name of your Cloud Run service.

Console UI

For an existing Cloud Run service:

1. Go to the Google Cloud console:

   Go to Google Cloud console

2. Click the checkbox at the left of the service you want to make public. (Don't click the service itself.)

3. In the information pane in the top right corner click the Permissions tab. If the information pane isn't visible, you may need to click Show Info Panel, then click Permissions.

4. Click Add principal.

In the New principals field, enter the value allUsers

1. From the Role drop-down menu, select the Cloud Run Invoker role.

2. Click Save.

3. You will be prompted to verify that you would like to make this resource public. Click Allow public access to apply the change to the service IAM settings.

For a new service you are creating, create the service but make sure you select Allow unauthenticated invocations in the Authentication tab to make the service publicly available. Selecting Require authentication will make the service private.

gcloud

To make a service publicly accessible, use the gcloud run services command to add the special allUsers member type to a service and grant it the roles/run.invoker role:

  gcloud run services add-iam-policy-binding [SERVICE_NAME] \
    --member="allUsers" \
    --role="roles/run.invoker"

Run the gcloud run deploy command to make your service publicly accessible when you deploy your service:

gcloud run deploy [SERVICE_NAME] ... --allow-unauthenticated

YAML

Create a file named policy.yaml with the following content:

bindings:
- members:
  - allUsers
  role: roles/run.invoker

Allow unauthenticated invocations for the existing SERVICE using:

gcloud run services set-iam-policy SERVICE policy.yaml

Terraform

To create a Cloud Run service, add the following to your to your existing main.tf file:

resource "google_cloud_run_v2_service" "default" {
  name     = "public-service"
  location = "us-central1"

  deletion_protection = false # set to "true" in production

  template {
    containers {
      image = "us-docker.pkg.dev/cloudrun/container/hello"
    }
  }
}

To update the service IAM binding for roles/run.invoker, add the following resource referencing your Cloud Run service:

resource "google_cloud_run_service_iam_binding" "default" {
  location = google_cloud_run_v2_service.default.location
  service  = google_cloud_run_v2_service.default.name
  role     = "roles/run.invoker"
  members = [
    "allUsers"
  ]
}

This binding is only authoritative for the given role. Other IAM bindings within the service IAM policy are preserved.