Volcano Queue API

openapi: 3.1.0
info:
  title: Volcano Queue API
  description: >-
    The Volcano Queue API provides Kubernetes CRD endpoints for managing Queue
    resources that collect PodGroups and apply weight-based fair-share scheduling
    and resource quotas. Queues are the primary mechanism for multi-tenant resource
    partitioning and priority-based job admission in Volcano batch scheduling.
  version: '1.10.0'
  contact:
    name: Volcano Community
    url: https://volcano.sh/en/
  license:
    name: Apache 2.0
    url: https://www.apache.org/licenses/LICENSE-2.0
externalDocs:
  description: Volcano Queue Documentation
  url: https://volcano.sh/en/docs/v1-10-0/queue/
servers:
  - url: https://{kubernetes-api-server}
    description: Kubernetes API server
    variables:
      kubernetes-api-server:
        default: localhost:6443
        description: Address of the Kubernetes API server
tags:
  - name: Queues
    description: >-
      Operations for managing Volcano Queue cluster-scoped custom resources.
      Queues define scheduling namespaces with weight-based fair sharing,
      resource capacity, and state management for batch workloads.
paths:
  /apis/scheduling.volcano.sh/v1beta1/queues:
    get:
      operationId: listQueues
      summary: List Volcano Queues
      description: >-
        Returns all Volcano Queue resources in the cluster. Queues are
        cluster-scoped resources and are not namespaced. Each queue defines
        a scheduling partition with weight, capacity, and state.
      tags:
        - Queues
      parameters:
        - $ref: '#/components/parameters/labelSelector'
        - $ref: '#/components/parameters/fieldSelector'
        - $ref: '#/components/parameters/limit'
        - $ref: '#/components/parameters/continueToken'
      responses:
        '200':
          description: List of Volcano Queues
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/QueueList'
        '401':
          description: Unauthorized
        '403':
          description: Forbidden
    post:
      operationId: createQueue
      summary: Create a Volcano Queue
      description: >-
        Creates a new cluster-scoped Volcano Queue resource. The queue spec
        defines its weight for fair-share scheduling, resource capacity, and
        whether it allows preemption of lower-priority jobs.
      tags:
        - Queues
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/Queue'
      responses:
        '201':
          description: Queue created successfully
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Queue'
        '400':
          description: Invalid Queue specification
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Status'
        '401':
          description: Unauthorized
        '403':
          description: Forbidden
        '409':
          description: Queue with this name already exists
  /apis/scheduling.volcano.sh/v1beta1/queues/{name}:
    get:
      operationId: readQueue
      summary: Get a Volcano Queue
      description: >-
        Returns the specified Volcano Queue resource including its current state,
        allocated resources, pending jobs, and condition information.
      tags:
        - Queues
      parameters:
        - $ref: '#/components/parameters/name'
      responses:
        '200':
          description: Queue details
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Queue'
        '401':
          description: Unauthorized
        '403':
          description: Forbidden
        '404':
          description: Queue not found
    put:
      operationId: replaceQueue
      summary: Replace a Volcano Queue
      description: >-
        Replaces the entire Volcano Queue resource with the provided specification.
      tags:
        - Queues
      parameters:
        - $ref: '#/components/parameters/name'
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/Queue'
      responses:
        '200':
          description: Queue updated
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Queue'
        '400':
          description: Invalid specification
        '401':
          description: Unauthorized
        '404':
          description: Queue not found
    patch:
      operationId: patchQueue
      summary: Partially update a Volcano Queue
      description: >-
        Applies a partial update to the specified Queue using JSON Merge Patch
        or Strategic Merge Patch.
      tags:
        - Queues
      parameters:
        - $ref: '#/components/parameters/name'
      requestBody:
        required: true
        content:
          application/merge-patch+json:
            schema:
              type: object
      responses:
        '200':
          description: Queue patched
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Queue'
        '400':
          description: Invalid patch
        '401':
          description: Unauthorized
        '404':
          description: Queue not found
    delete:
      operationId: deleteQueue
      summary: Delete a Volcano Queue
      description: >-
        Deletes the specified Volcano Queue. Deleting a queue that has pending
        jobs will cause those jobs to fail to be scheduled.
      tags:
        - Queues
      parameters:
        - $ref: '#/components/parameters/name'
      responses:
        '200':
          description: Queue deleted
        '401':
          description: Unauthorized
        '403':
          description: Forbidden
        '404':
          description: Queue not found
components:
  parameters:
    name:
      name: name
      in: path
      required: true
      description: The name of the Queue resource.
      schema:
        type: string
    labelSelector:
      name: labelSelector
      in: query
      required: false
      description: Label selector to restrict results.
      schema:
        type: string
    fieldSelector:
      name: fieldSelector
      in: query
      required: false
      description: Field selector to restrict results.
      schema:
        type: string
    limit:
      name: limit
      in: query
      required: false
      description: Maximum number of results per page.
      schema:
        type: integer
        minimum: 1
    continueToken:
      name: continue
      in: query
      required: false
      description: Continuation token for paginating large result sets.
      schema:
        type: string
  schemas:
    Queue:
      type: object
      description: >-
        A Volcano Queue cluster-scoped custom resource defining a scheduling
        partition with weight-based fair sharing, resource quotas, and job
        admission controls.
      required:
        - apiVersion
        - kind
        - metadata
        - spec
      properties:
        apiVersion:
          type: string
          enum:
            - scheduling.volcano.sh/v1beta1
        kind:
          type: string
          enum:
            - Queue
        metadata:
          $ref: '#/components/schemas/ObjectMeta'
        spec:
          $ref: '#/components/schemas/QueueSpec'
        status:
          $ref: '#/components/schemas/QueueStatus'
    QueueSpec:
      type: object
      description: Specification of a Volcano Queue.
      properties:
        weight:
          type: integer
          description: >-
            Relative weight of this queue for fair-share scheduling. Higher
            weight queues receive proportionally more resources when there is
            resource contention. Defaults to 1.
          minimum: 1
          default: 1
        capability:
          type: object
          description: >-
            Maximum resource allocation for this queue. Jobs submitted to this
            queue cannot collectively use more resources than specified here.
            Uses Kubernetes resource quantity format.
          additionalProperties:
            type: string
          example:
            cpu: "16"
            memory: "32Gi"
        reclaimable:
          type: boolean
          description: >-
            If true, resources allocated to idle jobs in this queue can be
            reclaimed by other queues that need them. Enables opportunistic
            resource sharing.
          default: true
        extendClusters:
          type: array
          description: >-
            List of extended cluster references for multi-cluster scheduling.
            Allows jobs in this queue to be dispatched across cluster boundaries.
          items:
            type: object
            properties:
              name:
                type: string
                description: Name of the remote cluster.
              weight:
                type: integer
                description: Relative scheduling weight for this remote cluster.
              capacity:
                type: object
                description: Resource capacity of the remote cluster.
                additionalProperties:
                  type: string
        guarantee:
          type: object
          description: >-
            Guaranteed minimum resource allocation for this queue. The scheduler
            ensures at least this amount of resources is always available to jobs
            in this queue regardless of other queue pressure.
          properties:
            resource:
              type: object
              additionalProperties:
                type: string
              description: >-
                Minimum guaranteed resources using Kubernetes resource quantity
                format, e.g. {"cpu": "4", "memory": "8Gi"}.
        parent:
          type: string
          description: >-
            Name of the parent queue for hierarchical queue structures. Enables
            nested queue trees for complex multi-tenant scheduling.
    QueueStatus:
      type: object
      description: >-
        Observed status of a Volcano Queue including resource usage, job counts,
        and operational state.
      properties:
        state:
          type: string
          description: Current operational state of the queue.
          enum:
            - Open
            - Closed
            - Draining
            - Unknown
        pending:
          type: integer
          format: int32
          description: Number of PodGroups in the Pending phase in this queue.
        running:
          type: integer
          format: int32
          description: Number of PodGroups in the Running phase in this queue.
        unknown:
          type: integer
          format: int32
          description: Number of PodGroups in the Unknown phase in this queue.
        inqueue:
          type: integer
          format: int32
          description: Number of PodGroups queued and waiting for resources.
        guaranteed:
          type: object
          description: Guaranteed resource allocation for this queue.
          additionalProperties:
            type: string
        allocated:
          type: object
          description: Currently allocated resources across all running jobs in this queue.
          additionalProperties:
            type: string
        reservation:
          type: object
          description: Reserved resource allocation for this queue.
          properties:
            nodes:
              type: object
              additionalProperties:
                type: string
            resource:
              type: object
              additionalProperties:
                type: string
        conditions:
          type: array
          description: Current conditions of the queue.
          items:
            type: object
            properties:
              type:
                type: string
              status:
                type: string
                enum:
                  - 'True'
                  - 'False'
                  - Unknown
              reason:
                type: string
              message:
                type: string
              transitionID:
                type: string
              lastTransitionTime:
                type: string
                format: date-time
    QueueList:
      type: object
      description: A list of Volcano Queue resources.
      required:
        - apiVersion
        - kind
        - items
      properties:
        apiVersion:
          type: string
        kind:
          type: string
          enum:
            - QueueList
        metadata:
          type: object
          properties:
            resourceVersion:
              type: string
        items:
          type: array
          description: List of Queue resources.
          items:
            $ref: '#/components/schemas/Queue'
    ObjectMeta:
      type: object
      description: Standard Kubernetes object metadata.
      required:
        - name
      properties:
        name:
          type: string
          description: Name of the queue, unique cluster-wide.
        labels:
          type: object
          additionalProperties:
            type: string
          description: Labels for organizing and selecting the queue.
        annotations:
          type: object
          additionalProperties:
            type: string
          description: Non-identifying metadata for the queue.
        resourceVersion:
          type: string
          description: Internal version for optimistic concurrency.
        uid:
          type: string
        creationTimestamp:
          type: string
          format: date-time
    Status:
      type: object
      description: Kubernetes Status object for error responses.
      properties:
        message:
          type: string
        reason:
          type: string
        code:
          type: integer