创建一个私有网络，在该网络环境下创建一台云主机并额外挂载一块存储硬盘

通过此模板，您可以快速创建具有CentOS7操作系统的弹性云主机。该模板首先会创建私有网络和相应子网，然后在此网络下为您创建一台挂载20G空间云硬盘的弹性云主机。

创建成功的资源栈，建议输出云主机的ID、公网IP地址和内网IP地址。

注意：该模板创建弹性云主机的同时，会打包创建一个弹性公网IP以供使用。当用户删除对应的资源栈（Stack）时，默认行为会一并删除该弹性云主机和弹性公网IP。

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编排模板说明:

模板包含几个主要部分。 Format Version 部分是必需部分。模板中的某些部分可以任何顺序显示。但是，在您构建模板时，使用以下列表的逻辑顺序可能会很有用，因为一个部分中的值可能会引用上一个部分中的值。列表简要概述了每个部分。

Format Version（必选）:JDRO支持的模板版本号，当前版本号：2018-10-01

Description（可选）:一个描述模板的文本字符串，对模板进行详细描述。

Parameters（可选）:定义创建资源栈时，模板用户可以定制化的参数。在运行时 (创建或更新堆栈时) 传递到模板。您可在模板的 Resources 和 Outputs 部分中引用定义的这些参数。使用参数可以增强模板的灵活性，提高复用性。

Mappings（可选）:可用来指定条件参数值的密钥和关键值的映射，与查找表类似。您可通过使用 Resources 和 Outputs 部分中的 Fn::FindInMap 内部函数将键与相应的值匹配。

Conditions（可选）:Conditions 使用 Fn::And、Fn::Or、Fn::Not、Fn::Equals 等定义条件。在创建或更新资源栈时，系统先计算模板中的所有条件，然后再创建资源。创建与 true 条件关联的所有资源，忽略与 false 条件关联的所有资源。

Resources（可选）:用于详细定义使用该模板创建的资源栈所包含的资源，包括资源间的依赖关系、配置细节等。

Outputs（可选）:用于输出一些资源属性等有用信息。可以通过 API 或控制台获取输出的内容。

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示例模板：

  
{
  "JDCLOUDTemplateFormatVersion": "2018-10-01",
  "Description": "JDRO VM_VPC_INSTANCE TEMPLATE",
  "Parameters": {
    "VPCName": {
      "Default": "vpc",
      "Type": "String",
      "MinLength": "1",
      "MaxLength": "32",
      "Description": "Define the VPC Name. It cannot be same as an existing VPC name, otherwise the resource will fail to be created",
      "AllowedPattern": "^[a-zA-Z_][a-zA-Z0-9_-]*$",
      "ConstraintDescription": "Name only supports numbers, capital and lowercase letters, English underline and hyphen ."
    },
    "SubnetName": {
      "Default": "subnet",
      "Type": "String",
      "MinLength": "1",
      "MaxLength": "32",
      "Description": "Define the Subnet Name. It cannot be same as an existing Subnet name, otherwise the resource will fail to be created",
      "AllowedPattern": "^[a-zA-Z_][a-zA-Z0-9_-]*$",
      "ConstraintDescription": "Name only supports numbers, capital and lowercase letters, English underline and hyphen ."
    },
    "AddressPrefix": {
      "Default": "10.0.0.0/16",
      "Type": "String",
      "Description": "Give an CIDR",
      "AllowedValues": [
        "192.168.0.0/16",
        "172.16.0.0/16",
        "10.0.0.0/16"
      ],
      "ConstraintDescription": "Need give an exact CIDR."
    },
    "InstanceName": {
      "Default": "vm",
      "Type": "String",
      "MinLength": "1",
      "MaxLength": "32",
      "Description": "The Instance Name",
      "AllowedPattern": "^[a-zA-Z_][a-zA-Z0-9_-]*$",
      "ConstraintDescription": "Name only supports numbers, capital and lowercase letters, English underline and hyphen ."
    },
    "DiskName": {
      "Default": "disk",
      "Type": "String",
      "MinLength": "1",
      "MaxLength": "32",
      "Description": "The Disk Name",
      "AllowedPattern": "^[a-zA-Z_][a-zA-Z0-9_-]*$",
      "ConstraintDescription": "Name only supports numbers, capital and lowercase letters, English underline and hyphen ."
    },
    "Password": {
      "NoEcho": true,
      "Description": "Password for vm access",
      "Type": "String",
      "MinLength": "8",
      "MaxLength": "16",
      "AllowedPattern": "[a-zA-Z0-9]*",
      "ConstraintDescription": ""
    }
  },
  "Mappings": {
    "AZInfo": {
      "cn-north-1": {
        "az1": "cn-north-1a",
        "az2": "cn-north-1b"
      },
      "cn-east-1": {
        "az1": "cn-east-1a"
      },
      "cn-east-2": {
        "az1": "cn-east-2a",
        "az2": "cn-east-2b"
      },
      "cn-south-1": {
        "az1": "cn-south-1a"
      }
    },
    "ImageInfo": {
      "cn-north-1": {
        "image": "img-9ha1rgelkq"
      },
      "cn-east-1": {
        "image": "img-htaupmjlqq"
      },
      "cn-east-2": {
        "image": "img-ssazsh60t6"
      },
      "cn-south-1": {
        "image": "img-uxgb28v2y3"
      }
    }
  },
  "Resources": {
    "MyVPC": {
      "Type": "JDCLOUD::VPC::VPC",
      "Properties": {
        "VpcName": {
          "Ref": "VPCName"
        }
      }
    },
    "MySubnet": {
      "Type": "JDCLOUD::VPC::Subnet",
      "Properties": {
        "VpcId": {
          "Ref": "MyVPC"
        },
        "AddressPrefix": {
          "Ref": "AddressPrefix"
        },
        "SubnetName": {
          "Ref": "SubnetName"
        }
      }
    },
    "MyInstance": {
      "Type": "JDCLOUD::VM::Instance",
      "Properties": {
        "Name": {
          "Ref": "InstanceName"
        },
        "ImageId": {
          "Fn::FindInMap": [
            "ImageInfo",
            {
              "Ref": "JDCLOUD::Region"
            },
            "image"
          ]
        },
        "InstanceType": "g.n2.medium",
        "AZ": {
          "Fn::FindInMap": [
            "AZInfo",
            {
              "Ref": "JDCLOUD::Region"
            },
            "az1"
          ]
        },
        "PrimaryNetworkInterface": {
          "NetworkInterface": {
            "SubnetId": {
              "Ref": "MySubnet"
            }
          }
        },
        "Password": {
          "Ref": "Password"
        }
      }
    },
    "MyDisk": {
      "Type": "JDCLOUD::VM::Disk",
      "Properties": {
        "DiskSizeGB": 20,
        "DiskType": "premium-hdd",
        "Name": {
          "Ref": "DiskName"
        },
        "AZ": {
          "Fn::FindInMap": [
            "AZInfo",
            {
              "Ref": "JDCLOUD::Region"
            },
            "az1"
          ]
        }
      }
    },
    "MyAttachDisk": {
      "Type": "JDCLOUD::VM::AttachDisk",
      "Properties": {
        "InstanceId": {
          "Ref": "MyInstance"
        },
        "DiskId": {
          "Ref": "MyDisk"
        },
        "AutoDelete": true
      }
    },
    "MyElasticIp": {
      "Type": "JDCLOUD::VPC::ElasticIp",
      "Properties": {
        "AutoDelete": true,
        "ElasticIPSpec": {
          "BandwidthMbps": 1,
          "Provider": "bgp"
        }
      }
    },
    "MyAssociateElasticIp": {
      "Type": "JDCLOUD::VPC::AssociateElasticIp",
      "Properties": {
        "InstanceId": {
          "Ref": "MyInstance"
        },
        "InstanceType": "vm",
        "ElasticIpId": {
          "Ref": "MyElasticIp"
        }
      }
    }
  },
  "Outputs": {
    "VM_ID": {
      "Value": {
        "Ref": "MyInstance"
      }
    },
    "VM_EIP": {
      "Value": {
        "Fn::GetAtt": [
          "MyInstance",
          "ElasticIpAddress"
        ]
      }
    },
    "VM_PrivateIP": {
      "Value": {
        "Fn::GetAtt": [
          "MyInstance",
          "PrivateIpAddress"
        ]
      }
    }
  }
}