Terraform Openstack Volume Module

This Terraform module creates and attaches block storage volumes to existing OpenStack instances using the OpenStack Compute (Nova) v2 API. It allows for flexible configuration of volume attachment options, including multiattach support and device tagging. This module is useful for scenarios where additional storage is needed for compute instances.

Note: This module requires Terraform version 1.5.0 or higher and OpenStack provider version 3.0.0 or higher.

Features

• Creates a block storage volume with configurable size and type.
• Attaches the volume to a specified OpenStack instance.
• Supports optional multiattach for attaching the volume to multiple instances.
• Configurable device path, tagging, and vendor-specific options for advanced use cases.

Usage

The following examples demonstrate how to use the module with required and optional parameters.

Basic Usage

module "volume_attachment" {
  source      = "path/to/terraform-openstack-volumes"
  name        = "example-volume"
  size        = 10
  volume_type = "standard"
  instance_id = openstack_compute_instance_v2.instance.id
}

Advanced Usage with Optional Parameters

module "volume_attachment" {
  source        = "./terraform-openstack-volumes"
  name          = "example-volume"
  size          = 10
  volume_type   = "multiattach"
  instance_id   = openstack_compute_instance_v2.instance.id
  device        = "/dev/vdb"
  multiattach   = true
  tag           = "data-volume"
  region        = "RegionOne"
  vendor_options = {
    ignore_volume_confirmation = true
  }
}

Inputs

Name	Description	Type	Default	Required
name	Name of the volume	string	n/a	yes
size	Size of the volume in GB	number	n/a	yes
volume_type	Type of the volume	string	"standard"	no
instance_id	ID of the instance to attach the volume to	string	n/a	yes
device	Device path for attachment (e.g., /dev/vdc)	string	null	no
multiattach	Enable multiattach for attaching to multiple instances	bool	false	no
tag	Tag for the attached device	string	null	no
region	Region for the Compute client	string	null	no
vendor_options	Map of vendor-specific options	map(any)	{}	no

License

This is an open source project under the MIT license.