> ## Documentation Index > Fetch the complete documentation index at: https://team.k0labs.com/llms.txt > Use this file to discover all available pages before exploring further. # Update cluster configuration > **Visibility:** `internal` · `public` ( OpenAPI Custom Extension: x-visibility ) "Cluster CRUD API"; Update cluster configuration to scale resources, upgrade versions, or modify settings. ## OpenAPI ````yaml api-docs/k0rdent-api.json patch /v1/regions/{region}/projects/{project}/compute/clusters/{id} openapi: 3.1.0 info: title: K0rdent AI API version: 0.2.0-draft description: > OpenAPI specification for the K0rdent AI GPU-as-a-Service platform. **Custom Extensions:** - `x-visibility`: Endpoint visibility — `internal` (Atlas only), `public` (Arc only), `[internal, public]` (common) - `x-status`: Implementation status — `mvp`, `tbd`, `blocked`, `stretch` - `x-source`: Source document reference or `TBD` for fields pending confirmation **Error Model:** Standard `{ error: { code, message, details[] } }` envelope. **Pagination:** All list endpoints support two modes: - **Cursor** (`pageToken` + `pageSize`): Use for frequently updated resources. Prevents skipped or duplicated items across pages. `nextPageToken` is returned; `total` is not. - **Offset** (`offset` + `pageSize`): Use for stable resources. Returns `total` for page-count UIs. `nextPageToken` is not returned. `pageToken` and `offset` are mutually exclusive. Default `pageSize` is 50, maximum is 500. servers: - url: https://api.k0rdent.ai description: K0rdent AI API Gateway security: - bearerAuth: [] tags: - name: clusters description: Kubernetes cluster management - name: kubeconfigs description: Kubeconfig issuance and management - name: instances description: VM and baremetal instance lifecycle - name: networks description: Network configuration and topology - name: addresses description: IP address management - name: servers description: Bare metal server lifecycle management - name: organizations description: Organization (tenant) management - name: projects description: Project resource grouping - name: authentication description: Authentication and session management - name: users description: User management - name: groups description: User group management - name: roles description: RBAC role definitions - name: policies description: IAM policy bindings - name: providers description: Identity provider configuration - name: token description: > Generate access token via multiple grant types (authorization_code, api_key, client_credentials). - name: check description: > Evaluate permissions for a principal against actions and resources. Supports single and bulk checks (up to 100). - name: introspect description: > Token introspection per RFC 7662. Validate token activity and retrieve full decoded claims. - name: revoke description: > Token revocation per RFC 7009. Explicitly invalidate access tokens before natural expiration. - name: sessions description: > Manage user browser sessions. Supports listing active sessions, creating a new session (login), and ending the current session (logout). - name: apikeys description: > Manage API keys for programmatic access. API keys are bound to a user and inherit a dynamic subset of the user's privileges, evaluated at token-mint time. Keys are scoped to a level in the resource hierarchy (organization, or project). - name: serviceaccounts description: | Manage service accounts for machine-to-machine and infrastructure access. Service accounts are independent principals with their own identity, role bindings, and credentials. They survive user off-boarding and are managed exclusively by tenant administrators. paths: /v1/regions/{region}/projects/{project}/compute/clusters/{id}: parameters: - $ref: '#/components/parameters/RegionPathParam' - $ref: '#/components/parameters/ProjectPathParam' - name: id in: path required: true schema: type: string description: Unique cluster identifier patch: tags: - clusters summary: Update cluster configuration description: > **Visibility:** `internal` · `public` ( OpenAPI Custom Extension: x-visibility ) "Cluster CRUD API"; Update cluster configuration to scale resources, upgrade versions, or modify settings. operationId: updateCluster requestBody: required: true content: application/json: schema: $ref: '#/components/schemas/ClusterUpdateRequest' responses: '200': description: Cluster updated content: application/json: schema: $ref: '#/components/schemas/Cluster' '400': $ref: '#/components/responses/BadRequest' '401': $ref: '#/components/responses/Unauthorized' '403': $ref: '#/components/responses/Forbidden' '404': $ref: '#/components/responses/NotFound' '500': $ref: '#/components/responses/InternalServerError' components: parameters: RegionPathParam: name: region in: path required: true schema: type: string description: Region identifier ProjectPathParam: name: project in: path required: true schema: type: string description: Project identifier schemas: ClusterUpdateRequest: type: object description: | Request to update cluster configuration. properties: displayName: type: string description: Updated human-friendly display name for the cluster. description: type: string description: Updated description of this resource. kubernetesVersion: type: string description: Upgrade to Kubernetes version nodePools: type: array description: Node pools belonging to this cluster. items: role: type: string enum: - worker - control-plane description: Role of the node pool. network: type: string format: uri description: | URL of the network this node pool is attached to. example: >- /v1/regions/us-texas-1/projects/project-x9y8z7/compute/networks/network-g7h8i9 subnet: type: string format: uri description: | URL of the subnet this node pool uses. nodeCount: type: integer description: Number of nodes in pool instanceType: type: string description: Instance type for nodes Cluster: type: object description: | Kubernetes cluster resource. properties: selfLink: type: string format: uri description: Server-defined URL for this resource. readOnly: true example: >- /v1/regions/us-texas-1/projects/project-x9y8z7/compute/clusters/cluster-a1b2c3 uid: type: string description: Server-generated UUID. format: uuid readOnly: true id: type: string description: >- Name of the resource. Provided by the client when the resource is created, or generated by the server if not specified. Must be 1-63 characters long and match the pattern [a-z]([\-a-z0-9]*[a-z0-9])? — the first character must be a lowercase letter, and all following characters must be lowercase letters, digits, or hyphens, with the last character being a letter or digit. Cannot be changed after the resource is created. pattern: ^[a-z]([-a-z0-9]*[a-z0-9])?$ minLength: 1 maxLength: 63 example: cluster-a1b2c3 displayName: type: string description: Optional human-friendly display name for the cluster. description: type: string description: An optional description of this resource. nodePools: type: array description: Node pools belonging to this cluster. items: role: type: string enum: - worker - control-plane description: Role of the node pool. network: type: string format: uri description: | URL of the network this node pool is attached to. example: >- /v1/regions/us-texas-1/projects/project-x9y8z7/compute/networks/network-g7h8i9 subnet: type: string format: uri description: | URL of the subnet this node pool uses. nodeCount: type: integer description: Number of nodes in pool instanceType: type: string description: Instance type for nodes status: type: object description: Cluster health and readiness state. properties: phase: type: string description: Lifecycle phase (e.g., Provisioning, Running, Deleting) conditions: type: array items: type: object description: Cluster conditions nodeCount: type: integer description: Number of nodes in cluster. kubernetesVersion: type: string description: Kubernetes version. endpoint: type: object description: Cluster endpoint details. properties: url: type: string description: Cluster API endpoint URL caCertificate: type: string description: CA certificate for endpoint createdAt: type: string format: date-time updatedAt: type: string format: date-time Error: type: object description: Standard error response properties: error: type: object properties: code: type: integer description: HTTP status code message: type: string description: Error message details: type: array items: type: object description: Additional error details responses: BadRequest: description: Bad request content: application/json: schema: $ref: '#/components/schemas/Error' Unauthorized: description: Unauthorized content: application/json: schema: $ref: '#/components/schemas/Error' Forbidden: description: Forbidden content: application/json: schema: $ref: '#/components/schemas/Error' NotFound: description: Not found content: application/json: schema: $ref: '#/components/schemas/Error' InternalServerError: description: Internal server error content: application/json: schema: $ref: '#/components/schemas/Error' securitySchemes: bearerAuth: type: http scheme: bearer bearerFormat: JWT description: Bearer token authentication using OAuth2/OIDC tokens ````