gcloud alpha iam list-grantable-roles

NAME
gcloud alpha iam list-grantable-roles - list IAM grantable roles for a resource
SYNOPSIS
gcloud alpha iam list-grantable-roles RESOURCE [--filter=EXPRESSION] [--page-size=PAGE_SIZE; default=100] [GCLOUD_WIDE_FLAG]
DESCRIPTION
(ALPHA) This command displays the list of grantable roles for a resource. The resource can be referenced either via the full resource name or via a URI. User can then add IAM policy bindings to grant the roles.
EXAMPLES
List grantable roles for a project:
gcloud alpha iam list-grantable-roles //cloudresourcemanager.googleapis.com/projects/PROJECT_ID

List grantable roles for a resource identified via full resource name:

gcloud alpha iam list-grantable-roles //compute.googleapis.com/projects/example-project/zones/us-central1-f/instances/example-instance

List grantable roles for a resource identified via URI:

gcloud alpha iam list-grantable-roles https://www.googleapis.com/compute/v1/projects/example-project/\
zones/us-central1-f/instances/example-instance
POSITIONAL ARGUMENTS
RESOURCE
The full resource name or URI to get the list of roles for.

See "Resource Names" for details. To get a URI from most list commands in gcloud, pass the --uri flag. For example:

gcloud compute instances list --project prj --uri https://compute.googleapis.com/compute/v1/projects/prj/zones/us-east1-c/instances/i1 https://compute.googleapis.com/compute/v1/projects/prj/zones/us-east1-d/instances/i2
LIST COMMAND FLAGS
--filter=EXPRESSION
Apply a Boolean filter EXPRESSION to each resource item to be listed. If the expression evaluates True, then that item is listed. For more details and examples of filter expressions, run $ gcloud topic filters. This flag interacts with other flags that are applied in this order: --flatten, --sort-by, --filter, --limit.
--page-size=PAGE_SIZE; default=100
Some services group resource list output into pages. This flag specifies the maximum number of resources per page. The default is 100. Paging may be applied before or after --filter and --limit depending on the service.
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 iam list-grantable-roles
gcloud beta iam list-grantable-roles