调度配置

Volcano组件支持K8s原生调度，可以使用nodeAffinity进行调度。以下示例使用强制的节点亲和性进行调度，更多关于nodeAffinity字段的说明请参见Kubernetes官方文档。

• Volcano Job的任务yaml中，需要添加如下加粗字段。

  apiVersion: batch.volcano.sh/v1alpha1  
  kind: Job                         
  metadata:
    name: mindx-test
    labels:
  ...
  spec:
  ...
    maxRetry: 3
    queue: default
    tasks:
    - name: "default-test"
      replicas: 1 
      template:
        metadata:
          labels:
  ...
        spec:
          affinity:      # 新增以下加粗字段
            nodeAffinity:                             # 节点亲和性配置
              requiredDuringSchedulingIgnoredDuringExecution: 
                nodeSelectorTerms:                    # 节点选择列表
                  - matchExpressions:
                      - key: aaa               # 匹配标签的key为aaa的节点，并且value是yyy的节点
                        operator: In
                        values:
                          - yyy
               podAntiAffinity:
                 requiredDuringSchedulingIgnoredDuringExecution:
  ...
            nodeSelector:
              host-arch: huawei-arm
  ...

• Ascend Job的任务yaml中，需要添加如下加粗字段。

  apiVersion: mindxdl.gitee.com/v1
  kind: AscendJob
  metadata:
    name: test-2
  ...
  spec:
    schedulerName: volcano  
    runPolicy:
      schedulingPolicy:   
        minAvailable: 2
        queue: default
    successPolicy: AllWorkers
    replicaSpecs:
      Master:
        replicas: 1
        restartPolicy: Never
        template:
          metadata:
            labels:
  ...
          spec:
            affinity:   #  新增字段
              nodeAffinity:                           # 节点亲和性配置
                requiredDuringSchedulingIgnoredDuringExecution: 
                  nodeSelectorTerms:                  # 节点选择列表
                    - matchExpressions:
                      - key: aaa            # 匹配标签的key为aaa的节点，并且value是yyy的节点
                        operator: In
                        values:
                          - yyy
            nodeSelector:
              host-arch: huawei-arm
  ...

  

  可通过执行kubectl get node --show-labels命令，查询节点的标签。在LABELS字段下，等号前的值为标签的key值，等号后的值为标签的value值，如aaa=yyy。