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Create a network drive
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Create a network drive

We recommend that you create resources in order. If you create all resources at once, Terraform will take into account the dependencies between resources that you specify in the configuration file. If dependencies are not specified, resources will be created in parallel, which can cause errors. For example, a resource that is required to create another resource may not have been created yet.


  1. Optional: configure the providers.

  2. Create a network drive.

    For all network disk types except for the Universal v2 type, the number of IOPS is fixed and depends on the disk type. For network drives of the Universal v2 type, you can change the total IOPS of the drive — increase and decrease. The number of IOPS changes is unlimited. The available number of IOPS in different disk types can be viewed in the Network Disk Limits subsection.

    You can create a disk:

    • from the image — you can use it as a cloud server boot disk;
    • or empty — you can use it as an additional disk.

Configuration files⁠

Example file for configuring providers
terraform {
  required_providers {
    servercore  = {
      source  = "terraform.servercore.com/servercore/servercore"
      version = "~> 6.0"
    }
    openstack = {
      source  = "terraform-provider-openstack/openstack"
      version = "2.1.0"
    }
  }
}

provider "servercore" {
  domain_name = "123456"
  username    = "user"
  password    = "password"
  auth_region = "ru-9"
  auth_url    = "https://cloud.api.selcloud.ru/identity/v3/"
}

resource "servercore_project_v2" "project_1" {
  name = "project"
}

resource "servercore_iam_serviceuser_v1" "serviceuser_1" {
  name         = "username"
  password     = "password"
  role {
    role_name  = "member"
    scope      = "project"
    project_id = servercore_project_v2.project_1.id 
  }
}

provider "openstack" {
  auth_url    = "https://cloud.api.selcloud.ru/identity/v3"
  domain_name = "123456"
  tenant_id   = servercore_project_v2.project_1.id
  user_name   = servercore_iam_serviceuser_v1.serviceuser_1.name
  password    = servercore_iam_serviceuser_v1.serviceuser_1.password
  region      = "ru-9"
}
Sample file for creating a network disk from an image
data "openstack_images_image_v2" "image_1" {
  name        = "Ubuntu 20.04 LTS 64-bit"
  most_recent = true
  visibility  = "public"
}

resource "openstack_blockstorage_volume_v3" "volume_1" {
  name                 = "boot-volume-for-server"
  size                 = "5"
  image_id             = data.openstack_images_image_v2.image_1.id
  volume_type          = "fast.ru-9a"
  availability_zone    = "ru-9a"
  enable_online_resize = true

  lifecycle {
    ignore_changes = [image_id]
  }

}
Sample file for creating an empty network disk
resource "openstack_blockstorage_volume_v3" "volume_2" {
  name                 = "additional-volume-for-server"
  size                 = "7"
  volume_type          = "universal.ru-9a"
  availability_zone    = "ru-9a"
  enable_online_resize = true
}

1. Optional: configure providers⁠

If you have configured Servercore and OpenStack providers, skip this step.

  1. Ensure that in the Control Panel you have created a service user with the Account Administrator and User Administrator roles.

  2. Create a directory to store the configuration files and a separate file with a .tf extension to configure the providers.

  3. Add Servercore and OpenStack providers to the file to configure the providers:

    terraform {
      required_providers {
        servercore  = {
          source  = "terraform.servercore.com/servercore/servercore"
          version = "~> 6.0"
        }
        openstack = {
          source  = "terraform-provider-openstack/openstack"
          version = "2.1.0"
        }
      }
    }

    Here version — versions of providers. The current version of the Openstack provider can be found in Terraform Registry and GitHub.

    Learn more about the products, services, and services that can be managed with providers in the Servercore and OpenStack Providers instruction.

  4. Initialize the Servercore provider:

    provider "servercore" {
      domain_name = "123456"
      username    = "user"
      password    = "password"
      auth_region = "ru-9"
      auth_url    = "https://cloud.api.selcloud.ru/identity/v3/"
    }

    Here:

    • domain_name — Servercore account number. You can look it up in control panel in the upper right corner;
    • username — username service user with the roles Account Administrator and User Administrator. Can be viewed in the control panel section Access Control → User Management → tab Service Users (the section is available only to the Account Owner and User Administrator);
    • password — password of the service user. You can view it when creating a user or change it to a new one;
    • auth_region — pool for example ru-9. All resources will be created in this pool. The list of available pools can be found in the instructions Availability matrices.

  5. Create a project:

    resource "servercore_project_v2" "project_1" {
      name = "project"
    }

    View a detailed description of the servercore_vpc_project_v2 resource.

  6. Create a service user to access the project and assign the Project Administrator role to it:

    resource "servercore_iam_serviceuser_v1" "serviceuser_1" {
      name         = "username"
      password     = "password"
      role {
        role_name  = "member"
        scope      = "project"
        project_id = servercore_project_v2.project_1.id 
      }
    }

    Here:

    • username — username;
    • password — user password. The password must be no shorter than eight characters and contain Latin letters of different cases and digits;
    • project_id — Project ID. You can view it in control panel: section Cloud Platform → open the projects menu (the name of the current project) → in the line of the required project press .

    View a detailed description of the servercore_iam_serviceuser_v1 resource.

  7. Initialize the OpenStack provider:

    provider "openstack" {
      auth_url    = "https://cloud.api.selcloud.ru/identity/v3"
      domain_name = "123456"
      tenant_id   = servercore_project_v2.project_1.id
      user_name   = servercore_iam_serviceuser_v1.serviceuser_1.name
      password    = servercore_iam_serviceuser_v1.serviceuser_1.password
      region      = "ru-9"
    }

    Here:

    • domain_name — Servercore account number. You can look it up in control panel in the upper right corner;
    • region — pool for example ru-9. All resources will be created in this pool. The list of available pools can be found in the instructions Availability matrices.

  8. If you create resources at the same time as configuring providers, add the depends_on argument for OpenStack resources . For example, for the resource openstack_networking_network_v2:

    resource "openstack_networking_network_v2" "network_1" {
      name           = "private-network"
      admin_state_up = "true"

      depends_on = [
        servercore_project_v2.project_1,
        servercore_iam_serviceuser_v1.serviceuser_1
      ]
    }

  9. Open the CLI.

  10. Initialize the Terraform configuration in the directory:

    terraform init

  11. Check that the configuration files have been compiled without errors:

    terraform validate

  12. Format the configuration files:

    terraform fmt

  13. Check the resources that will be created:

    terraform plan

  14. Apply the changes and create the resources:

    terraform apply

  15. Confirm the creation — type yes and press Enter. The created resources are displayed in the control panel.

  16. If there were not enough quotas to create resources, increase the quotas.

2. Create a network drive⁠

For all network disk types except for the Universal v2 type, the number of IOPS is fixed and depends on the disk type. The available IOPS in different disk types can be viewed in the Network Disk Limits subsection.

  1. Get an image.
  2. Create a network drive.

1. Get an image⁠

data "openstack_images_image_v2" "image_1" {
  name        = "Ubuntu 20.04 LTS 64-bit"
  most_recent = true
  visibility  = "public"
}

See the detailed description of the openstack_images_image_v2 data source.

2. Create a network disk from the image⁠

resource "openstack_blockstorage_volume_v3" "volume_1" {
  name                 = "boot-volume-for-server"
  size                 = "5"
  image_id             = data.openstack_images_image_v2.image_1.id
  volume_type          = "fast.ru-9a"
  availability_zone    = "ru-9a"
  enable_online_resize = true

  lifecycle {
    ignore_changes = [image_id]
  }

}

Here:

View a detailed description of the openstack_blockstorage_volume_v3 resource.