NAME

gcloud-compute-instances-detach-disk - Detach disks from Compute Engine virtual machine instances

SYNOPSIS

gcloud compute instances detach-disk
  NAME
  [--device-name DEVICE_NAME | --disk DISK]
  [--format FORMAT]
  [--help]
  [--project PROJECT]
  [--quiet, -q]
  [--zone ZONE]
  [-h]

DESCRIPTION

gcloud compute instances detach-disk is used to detach disks from virtual machines.

Detaching a disk without first unmounting it may result in incomplete I/O operations and data corruption. To unmount a persistent disk on a Linux-based image, ssh into the instance and run:

$ sudo umount /dev/disk/by-id/google-DEVICE_NAME

POSITIONAL ARGUMENTS

NAME

The name of the instance to detach the disk from.

FLAGS

--device-name DEVICE_NAME

Specifies a disk to detach by its device name, which is the name that the guest operating system sees. The device name is set at the time that the disk is attached to the instance, and needs not be the same as the persistent disk name. If the disk’s device name is specified, then its persistent disk name must not be specified using the “--disk” flag.

--disk DISK

Specifies a disk to detach by its resource name. If you specify a disk to remove by persistent disk name, then you must not specify its device name using the “--device-name” flag.

--format FORMAT

Specify a format for printed output. By default, a command-specific human-friendly output format is used. Setting this flag to one of the available options will serialize the result of the command in the chosen format and print it to stdout. Supported formats are: "json", "text", "yaml".

--help

Display detailed help.

--project PROJECT

Google Cloud Platform project to use for this invocation.

--quiet

Disable all interactive prompts when running gcloud commands. If input is required, defaults will be used, or an error will be raised.

--zone ZONE

The zone of the instance to detach a disk from. If not specified, you will be prompted to select a zone.

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 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”.

-h

Print a summary help and exit.

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