gcloud-help/gcloud/alpha/compute/instance-groups/managed/update

NAME
    gcloud alpha compute instance-groups managed update - update a Compute
        Engine managed instance group

SYNOPSIS
    gcloud alpha compute instance-groups managed update NAME
        [--description=DESCRIPTION] [--instance-redistribution-type=TYPE]
        [--list-managed-instances-results=MODE]
        [--remove-stateful-disks=DEVICE_NAME,[DEVICE_NAME,...]]
        [--remove-stateful-external-ips=INTERFACE_NAME,[...]]
        [--remove-stateful-internal-ips=INTERFACE_NAME,[...]]
        [--stateful-disk=[auto-delete=AUTO-DELETE],[device-name=DEVICE-NAME]]
        [--stateful-external-ip=[enabled],
          [auto-delete=AUTO-DELETE],[interface-name=INTERFACE-NAME]]
        [--stateful-internal-ip=[enabled],
          [auto-delete=AUTO-DELETE],[interface-name=INTERFACE-NAME]]
        [--target-distribution-shape=SHAPE]
        [--clear-autohealing
          | --initial-delay=INITIAL_DELAY --health-check=HEALTH_CHECK
          | --http-health-check=HTTP_HEALTH_CHECK
          | --https-health-check=HTTPS_HEALTH_CHECK]
        [--region=REGION | --zone=ZONE] [GCLOUD_WIDE_FLAG ...]

DESCRIPTION
    (ALPHA) Update a Compute Engine managed instance group.

    gcloud alpha compute instance-groups managed update allows you to specify
    or modify the stateful policy and autohealing policy for an existing
    managed instance group.

    A stateful policy defines which resources should be preserved across the
    group. When instances in the group are recreated, stateful resources are
    preserved. This command allows you to update stateful resources,
    specifically to add or remove stateful disks.

    When updating the autohealing policy, you can specify the health check,
    initial delay, or both. If either field is unspecified, its value won't be
    modified. If --health-check is specified, the health check monitors the
    health of your application. Whenever the health check signal for an
    instance becomes UNHEALTHY, the autohealer recreates the instance.

    If no health check exists, instance autohealing is triggered only by
    instance status: if an instance is not RUNNING, the group recreates it.

POSITIONAL ARGUMENTS
     NAME
        Name of the managed instance group to update.

FLAGS
     --description=DESCRIPTION
        An optional description for this group. To clear the description, set
        the value to an empty string.

     --instance-redistribution-type=TYPE
        Specifies the type of the instance redistribution policy. An instance
        redistribution type lets you enable or disable automatic instance
        redistribution across zones to meet the group's target distribution
        shape.

        An instance redistribution type can be specified only for a
        non-autoscaled regional managed instance group. By default it is set to
        PROACTIVE.

        The following types are available:

        ◆ NONE - The managed instance group does not redistribute instances
          across zones.

        ◆ PROACTIVE - The managed instance group proactively redistributes
          instances to meet its target distribution.

        TYPE must be one of: NONE, PROACTIVE.

     --list-managed-instances-results=MODE
        Pagination behavior for the group's listManagedInstances API method.
        This flag does not affect the group's gcloud or console list-instances
        behavior. By default it is set to PAGELESS. MODE must be one of:

         PAGELESS
            Pagination is disabled for the group's listManagedInstances API
            method. maxResults and pageToken query parameters are ignored and
            all instances are returned in a single response.
         PAGINATED
            Pagination is enabled for the group's listManagedInstances API
            method. maxResults and pageToken query parameters are respected.

     --remove-stateful-disks=DEVICE_NAME,[DEVICE_NAME,...]
        Remove stateful configuration for the specified disks.

     --remove-stateful-external-ips=INTERFACE_NAME,[...]
        Remove stateful configuration for the specified interfaces for external
        IPs.

     --remove-stateful-internal-ips=INTERFACE_NAME,[...]
        Remove stateful configuration for the specified interfaces for internal
        IPs.

     --stateful-disk=[auto-delete=AUTO-DELETE],[device-name=DEVICE-NAME]
        Disks considered stateful by the instance group. Managed instance
        groups preserve and reattach stateful disks on VM autohealing, update,
        and recreate events.

        Use this argument multiple times to update more disks.

        If a stateful disk with the given device name already exists in the
        current instance configuration, its properties will be replaced by the
        newly provided ones. Otherwise, a new stateful disk definition will be
        added to the instance configuration.

         device-name
            (Required) Device name of the disk to mark stateful.

         auto-delete
            (Optional) Specifies the auto deletion policy of the stateful disk.
            The following options are available:
            ▸ never: (Default) Never delete this disk. Instead, detach the
              disk when its instance is deleted.
            ▸ on-permanent-instance-deletion: Delete the stateful disk when
              the instance that it's attached to is permanently deleted from
              the group; for example, when the instance is deleted manually or
              when the group size is decreased.

     --stateful-external-ip=[enabled],[auto-delete=AUTO-DELETE],[interface-name=INTERFACE-NAME]
        Managed instance groups preserve stateful IPs on VM autohealing,
        update, and recreate events.

        Use this argument multiple times to update more IPs.

        If a stateful external IP with the given interface name already exists
        in the current instance configuration, its properties are replaced by
        the newly provided ones. Otherwise, a new stateful external IP
        definition is added to the instance configuration.

        At least one of the following is required:

         enabled
            Marks the IP address as stateful. The network interface named nic0
            is assumed by default when interface-name is not specified. This
            flag can be omitted when interface-name is provided explicitly.

         interface-name
            Marks the IP address from this network interface as stateful. This
            flag can be omitted when enabled is provided.

        Additional arguments:

         auto-delete
            (Optional) Prescribes what should happen to an associated static
            Address resource when a VM instance is permanently deleted.
            Regardless of the value of the delete rule, stateful IP addresses
            are always preserved on instance autohealing, update, and
            recreation operations. The following options are available:
            ▸ never: (Default) Never delete the static IP address. Instead,
              unassign the address when its instance is permanently deleted and
              keep the address reserved.
            ▸ on-permanent-instance-deletion: Delete the static IP address
              reservation when the instance that it's assigned to is
              permanently deleted from the instance group; for example, when
              the instance is deleted manually or when the group size is
              decreased.

     --stateful-internal-ip=[enabled],[auto-delete=AUTO-DELETE],[interface-name=INTERFACE-NAME]
        Managed instance groups preserve stateful IPs on VM autohealing,
        update, and recreate events.

        Use this argument multiple times to update more IPs.

        If a stateful internal IP with the given interface name already exists
        in the current instance configuration, its properties are replaced by
        the newly provided ones. Otherwise, a new stateful internal IP
        definition is added to the instance configuration.

        At least one of the following is required:

         enabled
            Marks the IP address as stateful. The network interface named nic0
            is assumed by default when interface-name is not specified. This
            flag can be omitted when interface-name is provided explicitly.

         interface-name
            Marks the IP address from this network interface as stateful. This
            flag can be omitted when enabled is provided.

        Additional arguments:

         auto-delete
            (Optional) Prescribes what should happen to an associated static
            Address resource when a VM instance is permanently deleted.
            Regardless of the value of the delete rule, stateful IP addresses
            are always preserved on instance autohealing, update, and
            recreation operations. The following options are available:
            ▸ never: (Default) Never delete the static IP address. Instead,
              unassign the address when its instance is permanently deleted and
              keep the address reserved.
            ▸ on-permanent-instance-deletion: Delete the static IP address
              reservation when the instance that it's assigned to is
              permanently deleted from the instance group; for example, when
              the instance is deleted manually or when the group size is
              decreased.

     --target-distribution-shape=SHAPE
        Specifies how a regional managed instance group distributes its
        instances across zones within the region. The default shape is EVEN.
        SHAPE must be one of:

         ANY
            The group picks zones for creating VM instances to fulfill the
            requested number of VMs within present resource constraints and to
            maximize utilization of unused zonal reservations. Recommended for
            batch workloads that do not require high availability.
         BALANCED
            The group prioritizes acquisition of resources, scheduling VMs in
            zones where resources are available while distributing VMs as
            evenly as possible across selected zones to minimize the impact of
            zonal failure. Recommended for highly available serving or batch
            workloads that do not require autoscaling.
         EVEN
            The group schedules VM instance creation and deletion to achieve
            and maintain an even number of managed instances across the
            selected zones. The distribution is even when the number of managed
            instances does not differ by more than 1 between any two zones.
            Recommended for highly available serving workloads.

     At most one of these can be specified:

       --clear-autohealing
          Clears all autohealing policy fields for the managed instance group.

       --initial-delay=INITIAL_DELAY
          Specifies the length of time during which the instance is known to be
          initializing and should not be autohealed even if unhealthy. This
          value cannot be greater than 1 hour. See $ gcloud topic datetimes for
          information on duration formats.

       At most one of these can be specified:

         --health-check=HEALTH_CHECK
            Name of the health check to operate on.

         --http-health-check=HTTP_HEALTH_CHECK
            (DEPRECATED) HTTP health check object used for autohealing
            instances in this group.

            HttpHealthCheck is deprecated. Use --health-check instead.

         --https-health-check=HTTPS_HEALTH_CHECK
            (DEPRECATED) HTTPS health check object used for autohealing
            instances in this group.

            HttpsHealthCheck is deprecated. Use --health-check instead.

     At most one of these can be specified:

       --region=REGION
          Region of the managed instance group to update. 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. 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 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 compute instance-groups managed update

        $ gcloud beta compute instance-groups managed update