Operating System and Root Disk

Learn more about the Operating Systems available for Virtual Servers.

CoreWeave Cloud supports a variety of Linux distributions and Windows versions system images for Virtual Servers.

Available Operating System versions

Click the OS type tab to see all currently available OS versions. See CoreWeave System Images for more information.

Linux

Linux

Name	Versions
Rocky	8
CentOS	7
Ubuntu	20.04, 22.04

Windows

Windows

Name	Version
Windows Professional	10
Windows Professional	11
Windows Server Standard	2019
Windows Server Standard	2022

Note

The size of the Virtual Server's root disk size can be increased after initialization, and the operating system will automatically expand to accommodate. However, the root disk size cannot be reduced after initial deployment.

Cloud UI

Deployment method: CoreWeave Cloud UI

From the CoreWeave Cloud UI Virtual Server deployment menu, click the Operating System expandable.

Select the Operating System you'd like to run (CentOS, Rocky, Ubuntu, or Windows), and a corresponding version. Then, set the Root Disk Size using the provided slider.

You can also configure the size of the root disk of the Virtual Server from here using the Root Disk Size slider. To add a system image addition such as NVIDIA Drivers or Teradici, click the slider into the "on" position for each desired add-on.

UEFI bootloader

If you are using a custom disk image, and need to configure UEFI bootloader options, you must do so from the YAML tab on the configuration screen. This option is configured in the os.enableUEFIboot field, which can be set to either true or false.

Example in plaintext:

Example

  os:
    definition: a
    enableUEFIBoot: false
    type: linux

Readiness probe

Note

Readiness Probes are added by CoreWeave to Windows system images by default. Learn more about CoreWeave Windows Images.

The Readiness Probe toggle adds a Readiness Probe to the Virtual Server, in order to better communicate when start-up procedures have completed. Images include a simple TCP listener on a given port to communicate with the Kubernetes API.

Beneath "Operating System Additions" is the toggle to enable or disable the Readiness Probe. The probe port is set in the field beside the toggle.

CLI

Deployment method: Kubernetes CLI

Field name	Type	Description
os	Array	Top-level field. Defines the Operating System specifications for the Virtual Server.
os.type	String	The Operating System type, whether Linux or Windows.
os.enableUEFIBoot	Boolean	Whether or not to enable the UEFI bootloader.

YAML example:

Example

  os:
    type: linux
    enableUEFIBoot: false

Readiness probe

Note

Readiness Probes are added by CoreWeave to Windows system images by default. Learn more about CoreWeave Windows Images.

The Readiness Probe parameters inside the cloudInit block may be used to add a Readiness Probe to the Virtual Server in order to better communicate when start-up procedures have completed. Images include a simple TCP listener on a given port to communicate with the Kubernetes API, which is configured in the tcpSocket.port field.

{1}

readinessProbe:
    failureThreshold: 30
    initialDelaySeconds: 10
    periodSeconds: 20
    tcpSocket:
      port: 1337

Terraform

Deployment method: Terraform

The Virtual Server's Operating System options are configured as variables passed into the Virtual Server Terraform module.

Note

You can find the name of Operating System images (vs_image) in the System Images section.

Operating System and root disk storage configuration options

The table below describes all available configuration options for the Operating System.

Variable name	Variable type	Description	Default value
vs_os_type	String	The type (Windows or Linux) of Operating System with which to provision the Virtual Server.	linux
vs_image	String	The name of the image to be used for the Operating System.	ubuntu2004-docker-master-20210601-ord1 (The Ubuntu 20.04 image stored in the Chicago region.)

Note

UEFI bootloading options are not currently available through use of this Terraform module.

Example in plain text:

Example

variable "vs_os_type" {
  default = "linux"
}

variable "vs_image" {
  description = "OS image"
  default     = "ubuntu2004-docker-master-20210601-ord1"
}

Readiness probe

Note

Readiness Probes are not supported by the CoreWeave Terraform module at this time. Refer to the Cloud UI or CLI methods to configure a Readiness Probe.