资源属性的 Openstack HEAT 条件

Question

"Conditions (..) They can be associated with resources and resource properties in the resources section (..)" - 正如官方 openstack 文档所说，我可以做到这一点。但是附带的示例不包含 "resource properties".

我有我的示例，当用户可以将参数设置为不创建端口 2 并且不附加端口 2（因为端口 2 不存在）时：

parameters:
  global_port2_create:
    description: Do you want eth1 (port2)
    type: string
    default: true

conditions:
  create_port2: {equals : [{get_param: global_port2_create}, "true"]}

resources:
  node_port1:
    type: OS::Neutron::Port
    properties:
      network_id: {get_param: global_port1_net_id }
      fixed_ips:
        - subnet_id: {get_param: global_port1_net_id }
        - ip_address: {get_param: node_port1_ip }
      security_groups: {get_param: global_port1_security_groups_ids}
  node_port2:
    type: OS::Neutron::Port
    condition: create_port2
    properties:
      network_id: {get_param: global_port_net_id }
      fixed_ips:
        - subnet_id: {get_param: global_port2_net_id }
        - ip_address: {get_param: node5_port2_ip }
      security_groups: {get_param: global_port2_security_groups_ids}
  node5_server:
    type: OS::Nova::Server
    depends_on: [ node5_port1, node5_port2 ]
    properties:
      name: some_name
      image: { get_param: global_image }
      availability_zone: some_az
      networks:
        - port: { get_resource: node5_port1 }
        - port: { get_resource: node5_port2 }  #How to use a condition here?

我知道，我可以用两个端口做一个 ResourceGroup 并迭代它们，但我不想要这个解决方案。大概是这样的？

      networks:
        - port: { get_resource: node5_port1 }
        - port:
          condition: create_port2
          get_resource: node5_port2

有人知道如何完成这个吗？

Answer 1

我有一个类似的用例并找到了解决方案。但是，如果这仍然是一个问题，请与可读性说再见：

      networks: {if: [ "create_port2", [port: { get_resource: node5_port1 }, port: { get_resource: node5_port2 }], [port: { get_resource: node5_port1 }]}

你也可以这样写：

      networks:
        if: 
        - "create_port2"
        - [port: { get_resource: node5_port1 }, port: { get_resource: node5_port2 }]
        - [port: { get_resource: node5_port1 }]

甚至：

      networks:
        if: 
        - "create_port2"
        - - port: { get_resource: node5_port1 }
          - port: { get_resource: node5_port2 }
        - - port: { get_resource: node5_port1 }

选择你的毒药！

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