gcloud preview compute instance-groups managed all-instances-config update

INFORMATION
gcloud preview compute instance-groups managed all-instances-config update is supported in universe domain universe; however, some of the values used in the help text may not be available. Command examples may not work as-is and may requires changes before execution.
NAME
gcloud preview compute instance-groups managed all-instances-config update - update the all-instances configuration of a managed instance group
SYNOPSIS
gcloud preview compute instance-groups managed all-instances-config update NAME [--labels=KEY=VALUE,[KEY=VALUE,…]] [--metadata=KEY=VALUE,[KEY=VALUE,…]] [--region=REGION     | --zone=ZONE] [GCLOUD_WIDE_FLAG …]
DESCRIPTION
(PREVIEW) gcloud preview compute instance-groups managed all-instances-config update updates the group's all-instances configuration and applies it only to new instances that are added to the group.

To apply a revised all-instances configuration to existing instances in the group, use one of the following methods:

  • Update instances using the update-instances command.
  • Recreate instances using the recreate-instances command.
  • Use the rolling-action start-update command.
  • Use the API to set the group's updatePolicy.type to PROACTIVE.
EXAMPLES
To update an all-instances configuration in order to override the group's instance template for a label with the key label-key and metadata with the key metadata-key in group my-group, run: 
gcloud preview compute instance-groups managed all-instances-config update my-group --metadata=metadata-key=metadata-override-value --labels=qlabel-key=label-override-value
POSITIONAL ARGUMENTS
NAME
Name of the managed instance group to update the all instances configuration for.
FLAGS
--labels=KEY=VALUE,[KEY=VALUE,…]
Add labels to the group's all instances configuration.
--metadata=KEY=VALUE,[KEY=VALUE,…]
Add metadata to the group's all instances configuration.
At most one of these can be specified:
--region=REGION
Region of the managed instance group to update the all instances configuration for. If not specified, you might be prompted to select a region (interactive mode only).

A list of regions can be fetched by running: 

gcloud compute regions list

Overrides the default compute/region property value for this command invocation.

--zone=ZONE
Zone of the managed instance group to update the all instances configuration for. If not specified, you might be prompted to select a zone (interactive mode only).

A list of zones can be fetched by running: 

gcloud compute zones list

Overrides the default compute/zone 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 DEVELOPER PREVIEW and may 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 instance-groups managed all-instances-config update
 
gcloud alpha compute instance-groups managed all-instances-config update
 
gcloud beta compute instance-groups managed all-instances-config update