gcloud compute backend-services set-iam-policy

NAME
gcloud compute backend-services set-iam-policy - set the IAM policy binding for a Compute Engine backend service
SYNOPSIS
gcloud compute backend-services set-iam-policy BACKEND_SERVICE_NAME POLICY_FILE [--global     | --region=REGION] [GCLOUD_WIDE_FLAG …]
DESCRIPTION
Sets the IAM policy for the given backend service as defined in a JSON or YAML file.
EXAMPLES
The following command will read an IAM policy defined in a JSON file 'policy.json' and set it for the backend service my-backend-service: 
gcloud compute backend-services set-iam-policy my-backend-service policy.json --region=REGION
 
gcloud compute backend-services set-iam-policy my-backend-service policy.json --global

See https://cloud.google.com/iam/docs/managing-policies for details of the policy file format and contents.

POSITIONAL ARGUMENTS
BACKEND_SERVICE_NAME
Name of the backend service to operate on.
POLICY_FILE
Path to a local JSON or YAML formatted file containing a valid policy.

The output of the get-iam-policy command is a valid file, as is any JSON or YAML file conforming to the structure of a Policy.

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
These variants are also available: 
gcloud alpha compute backend-services set-iam-policy
 
gcloud beta compute backend-services set-iam-policy