> ## Documentation Index > Fetch the complete documentation index at: https://gcore.com/docs/llms.txt > Use this file to discover all available pages before exploring further. # Execute virtual GPU cluster action > Perform a specific action on a virtual GPU cluster. Available actions: start, stop, soft reboot, hard reboot, resize ## OpenAPI ````yaml /api-reference/services_documented/cloud_api.yaml post /cloud/v3/gpu/virtual/{project_id}/{region_id}/clusters/{cluster_id}/action openapi: 3.1.0 info: title: Gcore OpenAPI – Cloud API description: >- This OpenAPI is an aggregated OpenAPI specification that unifies all Gcore products into a single file. It covers Cloud, CDN, DNS, WAAP, DDoS Protection, Object Storage, Streaming, and FastEdge services. version: '2026-05-11T15:10:30.328297+00:00' servers: - url: https://api.gcore.com security: - APIKey: [] tags: - name: Bare Metal x-displayName: Bare Metal - name: Container as a Service x-displayName: Container as a Service - name: Cost Reports x-displayName: Cost Reports - name: DDoS Protection x-displayName: DDoS Protection - name: Everywhere Inference x-displayName: Everywhere Inference - name: Everywhere Inference Apps x-displayName: Everywhere Inference Apps - name: File Shares x-displayName: File Shares - name: Floating IPs x-displayName: Floating IPs - name: Function as a Service x-displayName: Function as a Service - name: GPU Bare Metal x-displayName: GPU Bare Metal - name: GPU Virtual x-displayName: GPU Virtual - name: IP Ranges x-displayName: IP Ranges - name: Images x-displayName: Images - name: Instances x-displayName: Instances - name: Load Balancers x-displayName: Load Balancers - name: Logging x-displayName: Logging - name: Managed Kubernetes x-displayName: Managed Kubernetes - name: Managed PostgreSQL x-displayName: Managed PostgreSQL - name: Networks x-displayName: Networks - name: Placement Groups x-displayName: Placement Groups - name: Projects x-displayName: Projects - name: Quotas x-displayName: Quotas - name: Regions x-displayName: Regions - name: Registry x-displayName: Registry - name: Reservations x-displayName: Reservations - name: Reserved IPs x-displayName: Reserved IPs - name: Routers x-displayName: Routers - name: SSH Keys x-displayName: SSH Keys - name: Secrets x-displayName: Secrets - name: Security Groups x-displayName: Security Groups - name: Snapshot Schedules x-displayName: Snapshot Schedules - name: Snapshots x-displayName: Snapshots - name: Tasks x-displayName: Tasks - name: User Actions x-displayName: User Actions - name: User Role Assignments x-displayName: User Role Assignments - name: Volumes x-displayName: Volumes paths: /cloud/v3/gpu/virtual/{project_id}/{region_id}/clusters/{cluster_id}/action: post: tags: - GPU Virtual summary: Execute virtual GPU cluster action description: |- Perform a specific action on a virtual GPU cluster. Available actions: start, stop, soft reboot, hard reboot, resize operationId: VirtualClusterInstanceActions.post parameters: - in: path name: project_id required: true description: Project ID schema: description: Project ID example: 1 examples: - 1 title: Project Id type: integer - in: path name: region_id required: true description: Region ID schema: description: Region ID example: 7 examples: - 7 title: Region Id type: integer - in: path name: cluster_id required: true description: Cluster unique identifier schema: description: Cluster unique identifier example: 1aaaab48-10d0-46d9-80cc-85209284ceb4 examples: - 1aaaab48-10d0-46d9-80cc-85209284ceb4 format: uuid4 title: Cluster Id type: string requestBody: content: application/json: schema: $ref: '#/components/schemas/VirtualGPUClusterActionSerializer' responses: '200': description: OK content: application/json: schema: $ref: '#/components/schemas/TaskIDsSerializer' x-codeSamples: - lang: Python source: |- import os from gcore import Gcore client = Gcore( api_key=os.environ.get("GCORE_API_KEY"), # This is the default and can be omitted ) task_id_list = client.cloud.gpu_virtual.clusters.action( cluster_id="1aaaab48-10d0-46d9-80cc-85209284ceb4", project_id=1, region_id=7, action="start", ) print(task_id_list.tasks) - lang: Go source: "package main\n\nimport (\n\t\"context\"\n\t\"fmt\"\n\n\t\"github.com/G-Core/gcore-go\"\n\t\"github.com/G-Core/gcore-go/cloud\"\n\t\"github.com/G-Core/gcore-go/option\"\n)\n\nfunc main() {\n\tclient := gcore.NewClient(\n\t\toption.WithAPIKey(\"My API Key\"),\n\t)\n\ttaskIDList, err := client.Cloud.GPUVirtual.Clusters.Action(\n\t\tcontext.TODO(),\n\t\t\"1aaaab48-10d0-46d9-80cc-85209284ceb4\",\n\t\tcloud.GPUVirtualClusterActionParams{\n\t\t\tProjectID: gcore.Int(1),\n\t\t\tRegionID: gcore.Int(7),\n\t\t\tOfStart: &cloud.GPUVirtualClusterActionParamsBodyStart{},\n\t\t},\n\t)\n\tif err != nil {\n\t\tpanic(err.Error())\n\t}\n\tfmt.Printf(\"%+v\\n\", taskIDList.Tasks)\n}\n" components: schemas: VirtualGPUClusterActionSerializer: discriminator: mapping: hard_reboot: $ref: '#/components/schemas/HardRebootGPUClusterSerializer' resize: $ref: '#/components/schemas/ResizeVirtualGPUClusterSerializer' soft_reboot: $ref: '#/components/schemas/SoftRebootGPUClusterSerializer' start: $ref: '#/components/schemas/StartGPUClusterSerializer' stop: $ref: '#/components/schemas/StopGPUClusterSerializer' propertyName: action oneOf: - $ref: '#/components/schemas/StartGPUClusterSerializer' - $ref: '#/components/schemas/StopGPUClusterSerializer' - $ref: '#/components/schemas/SoftRebootGPUClusterSerializer' - $ref: '#/components/schemas/HardRebootGPUClusterSerializer' - $ref: '#/components/schemas/ResizeVirtualGPUClusterSerializer' title: VirtualGPUClusterActionSerializer TaskIDsSerializer: properties: tasks: description: >- List of task IDs representing asynchronous operations. Use these IDs to monitor operation progress: - `GET /v1/tasks/{task_id}` - Check individual task status and details Poll task status until completion (`FINISHED`/`ERROR`) before proceeding with dependent operations. example: - d478ae29-dedc-4869-82f0-96104425f565 examples: - - d478ae29-dedc-4869-82f0-96104425f565 items: type: string title: Tasks type: array required: - tasks title: TaskIDsSerializer type: object HardRebootGPUClusterSerializer: properties: action: const: hard_reboot description: Action name example: hard_reboot examples: - hard_reboot title: Action type: string required: - action title: HardRebootGPUClusterSerializer type: object ResizeVirtualGPUClusterSerializer: properties: action: const: resize description: Action name example: resize examples: - resize title: Action type: string servers_count: description: Requested servers count example: 5 examples: - 5 exclusiveMinimum: 0 title: Servers Count type: integer required: - action - servers_count title: ResizeVirtualGPUClusterSerializer type: object SoftRebootGPUClusterSerializer: properties: action: const: soft_reboot description: Action name example: soft_reboot examples: - soft_reboot title: Action type: string required: - action title: SoftRebootGPUClusterSerializer type: object StartGPUClusterSerializer: properties: action: const: start description: Action name example: start examples: - start title: Action type: string required: - action title: StartGPUClusterSerializer type: object StopGPUClusterSerializer: properties: action: const: stop description: Action name example: stop examples: - stop title: Action type: string required: - action title: StopGPUClusterSerializer type: object securitySchemes: APIKey: description: >- API key for authentication. Make sure to include the word `apikey`, followed by a single space and then your token. Example: `apikey 1234$abcdef` type: apiKey in: header name: Authorization ````