Cloud Assembly 中的機器和磁碟叢集

Cloud Assembly 範本設計可以部署機器叢集並連結磁碟叢集。

若要部署機器叢集和磁碟叢集，請在雲端範本中利用 allocatePerInstance 資源旗標以及 count.index 和 map_to_object 運算式語法。

下列雲端範本代碼範例可作為部署叢集的設計準則。

兩個機器共用一個磁碟叢集

resources:
  app0:
    type: Cloud.Machine
    allocatePerInstance: true
    properties:
      image: ubuntu
      flavor: small
      attachedDisks: '${map_to_object(slice(resource.disk[*].id, 0,2), "source")}'
  app1:
    type: Cloud.Machine
    allocatePerInstance: true
    properties:
      image: ubuntu
      flavor: small
      attachedDisks: '${map_to_object(slice(resource.disk[*].id, 2,4), "source")}'
  disk:
    type: Cloud.Volume
    allocatePerInstance: true
    properties:
      count: 4
      capacityGb: 5

機器數目不等，每個機器具有一個磁碟

inputs:
  count:
    type: integer
    default: 2
resources:
  Cloud_Machine_1:
    type: Cloud.Machine
    allocatePerInstance: true
    properties:
      image: ubuntu
      flavor: small
      count: '${input.count}'
      attachedDisks: '${map_to_object(slice(resource.disk[*].id, count.index, count.index + 1), "source")}'
  disk:
    type: Cloud.Volume
    allocatePerInstance: true
    properties:
      count: '${input.count}'
      capacityGb: 5

機器數目不等，每個機器具有兩個磁碟

inputs:
  count:
    type: integer
    default: 2
resources:
  Cloud_Machine_1:
    type: Cloud.Machine
    allocatePerInstance: true
    properties:
      image: ubuntu
      flavor: small
      count: ${input.count}
      attachedDisks: '${map_to_object(slice(resource.disk[*].id, 2*count.index, 2*(count.index + 1)), "source")}'
  disk:
    type: Cloud.Volume
    allocatePerInstance: true
    properties:
      count: ${2*input.count}
      capacityGb: 5

在請求時設定磁碟大小

inputs:
  disksize:
    type: array
    minItems: 2
    maxItems: 2
    items:
      type: object
      properties:
        size:
          type: integer
resources:
  app:
    type: Cloud.Machine
    allocatePerInstance: true
    properties:
      flavor: small
      image: ubuntu
      attachedDisks: ${map_to_object(slice(resource.disk[*].id, 0, 2), 'source')}
  disk:
    type: Cloud.Volume
    allocatePerInstance: true
    properties:
      count: 2
      capacityGb: ${input.disksize[count.index].size}