# io.k8s.api.resource.v1beta1.DeviceClassSpec

From **Kubernetes**.

DeviceClassSpec is used in a [DeviceClass] to define what can be allocated and how to configure it.

- Type: `object`

## Properties

### `config`

- Required: false
- Type: `array`

Config defines configuration parameters that apply to each device that is claimed via this class. Some classses may potentially be satisfied by multiple drivers, so each instance of a vendor configuration applies to exactly one driver.

They are passed to the driver, but are not considered while allocating the claim.

### `extendedResourceName`

- Required: false
- Type: `string`

ExtendedResourceName is the extended resource name for the devices of this class. The devices of this class can be used to satisfy a pod's extended resource requests. It has the same format as the name of a pod's extended resource. It should be unique among all the device classes in a cluster. If two device classes have the same name, then the class created later is picked to satisfy a pod's extended resource requests. If two classes are created at the same time, then the name of the class lexicographically sorted first is picked.

### `selectors`

- Required: false
- Type: `array`

Each selector must be satisfied by a device which is claimed via this class.

## JSON Schema

```json
{"description":"DeviceClassSpec is used in a [DeviceClass] to define what can be allocated and how to configure it.","properties":{"config":{"description":"Config defines configuration parameters that apply to each device that is claimed via this class. Some classses may potentially be satisfied by multiple drivers, so each instance of a vendor configuration applies to exactly one driver.\n\nThey are passed to the driver, but are not considered while allocating the claim.","items":{"$ref":"#/components/schemas/io.k8s.api.resource.v1beta1.DeviceClassConfiguration"},"type":"array","x-kubernetes-list-type":"atomic"},"extendedResourceName":{"description":"ExtendedResourceName is the extended resource name for the devices of this class. The devices of this class can be used to satisfy a pod's extended resource requests. It has the same format as the name of a pod's extended resource. It should be unique among all the device classes in a cluster. If two device classes have the same name, then the class created later is picked to satisfy a pod's extended resource requests. If two classes are created at the same time, then the name of the class lexicographically sorted first is picked.","type":"string"},"selectors":{"description":"Each selector must be satisfied by a device which is claimed via this class.","items":{"$ref":"#/components/schemas/io.k8s.api.resource.v1beta1.DeviceSelector"},"type":"array","x-kubernetes-list-type":"atomic"}},"type":"object"}
```