NAME
    gcloud alpha compute backend-services add-iam-policy-binding - add an IAM
        policy binding to a Compute Engine backend service

SYNOPSIS
    gcloud alpha compute backend-services add-iam-policy-binding
        BACKEND_SERVICE_NAME --member=PRINCIPAL --role=ROLE
        [--global | --region=REGION] [GCLOUD_WIDE_FLAG ...]

DESCRIPTION
    (ALPHA) Add an IAM policy binding to a Compute Engine backend service.

EXAMPLES
    To add an IAM policy binding for the role of
    'compute.loadBalancerServiceUser' for the user 'test-user@gmail.com' with
    backend service 'my-backend-service' and region 'REGION', run:

        $ gcloud alpha compute backend-services add-iam-policy-binding \
          my-backend-service --region=REGION \
          --member='user:test-user@gmail.com' \
          --role='roles/compute.loadBalancerServiceUser'

        $ gcloud alpha compute backend-services add-iam-policy-binding \
          my-backend-service --global \
          --member='user:test-user@gmail.com' \
          --role='roles/compute.loadBalancerServiceUser'

    See https://cloud.google.com/iam/docs/managing-policies for details of
    policy role and member types.

POSITIONAL ARGUMENTS
     BACKEND_SERVICE_NAME
        Name of the backend service to operate on.

REQUIRED FLAGS
     --member=PRINCIPAL
        The principal to add the binding for. Should be of the form
        user|group|serviceAccount:email or domain:domain.

        Examples: user:test-user@gmail.com, group:admins@example.com,
        serviceAccount:test123@example.domain.com, or
        domain:example.domain.com.

        Some resources also accept the following special values:
        ◆ allUsers - Special identifier that represents anyone who is on the
          internet, with or without a Google account.
        ◆ allAuthenticatedUsers - Special identifier that represents anyone
          who is authenticated with a Google account or a service account.

     --role=ROLE
        Role name to assign to the principal. The role name is the complete
        path of a predefined role, such as roles/logging.viewer, or the role ID
        for a custom role, such as
        organizations/{ORGANIZATION_ID}/roles/logging.viewer.

OPTIONAL FLAGS
     At most one of these can be specified:

       --global
          If set, the backend service is global.

       --region=REGION
          Region of the backend service to operate on. Overrides the default
          compute/region property value for this command invocation.

GCLOUD WIDE FLAGS
    These flags are available to all commands: --access-token-file, --account,
    --billing-project, --configuration, --flags-file, --flatten, --format,
    --help, --impersonate-service-account, --log-http, --project, --quiet,
    --trace-token, --user-output-enabled, --verbosity.

    Run $ gcloud help for details.

NOTES
    This command is currently in alpha and might change without notice. If this
    command fails with API permission errors despite specifying the correct
    project, you might be trying to access an API with an invitation-only early
    access allowlist. These variants are also available:

        $ gcloud compute backend-services add-iam-policy-binding

        $ gcloud beta compute backend-services add-iam-policy-binding