gcloud compute instance-groups unmanaged remove-instances

NAME: gcloud compute instance-groups unmanaged remove-instances - removes resources from an unmanaged instance group by instance name
SYNOPSIS: gcloud compute instance-groups unmanaged remove-instances NAME --instances=INSTANCE,[INSTANCE,…] [--zone=ZONE] [GCLOUD_WIDE_FLAG …]
DESCRIPTION: gcloud compute instance-groups unmanaged remove-instances removes instances from an unmanaged instance group using the instance name.
This does not delete the actual instance resources but removes it from the instance group.
POSITIONAL ARGUMENTS: NAME

Name of the instance group to operate on.
REQUIRED FLAGS: --instances=INSTANCE,[INSTANCE,…]

The names of the instances to remove from the instance group.
OPTIONAL FLAGS: --zone=ZONE

Zone of the instance group to operate on. If not specified and the compute/zone property isn't set, you might be prompted to select a zone (interactive mode only).
To avoid prompting when this flag is omitted, you can set the compute/zone property:
gcloud config set compute/zone ZONE

A list of zones can be fetched by running:
gcloud compute zones list

To unset the property, run:
gcloud config unset compute/zone

Alternatively, the zone can be stored in the environment variable CLOUDSDK_COMPUTE_ZONE.
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 instance-groups unmanaged remove-instances

gcloud beta compute instance-groups unmanaged remove-instances