gcloud data-catalog entry-groups set-iam-policy

gcloud data-catalog entry-groups set-iam-policy - set the IAM policy for a Cloud Data Catalog entry group
gcloud data-catalog entry-groups set-iam-policy (ENTRY_GROUP : --location=LOCATION) POLICY_FILE [GCLOUD_WIDE_FLAG]
Set the IAM policy for the given Cloud Data Catalog entry group as defined in a JSON or YAML file.
Entry group resource - Entry group for which to set the IAM policy. The arguments in this group can be used to specify the attributes of this resource. (NOTE) Some attributes are not given arguments in this group but can be set in other ways. To set the [project] attribute: provide the argument [entry_group] on the command line with a fully specified name; set the property [core/project]; provide the argument [--project] on the command line. This must be specified.
ID of the entry group or fully qualified identifier for the entry group. This positional must be specified if any of the other arguments in this group are specified.
Location of the entry group.
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.

These flags are available to all commands: --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.

This command uses the datacatalog/v1 API. The full documentation for this API can be found at: https://cloud.google.com/data-catalog/docs/
The following command will read am IAM policy defined in a JSON file 'policy.json' and set it for the entry group 'group1' with location 'us-central1':
gcloud data-catalog entry-groups set-iam-policy group1 --location=us-central1 policy.json

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

These variants are also available:
gcloud alpha data-catalog entry-groups set-iam-policy
gcloud beta data-catalog entry-groups set-iam-policy