通过示例模板创建资源栈 - 资源编排

资源编排服务ROS（Resource Orchestration Service）支持通过模板创建一组阿里云资源。ROS把每组资源定义为一个资源栈（Stack）。ROS通过资源栈管理，分组维护阿里云资源。

1. 登录ROS控制台。
2. 在左侧导航栏选择模板 > 模板示例。
3. 查找模板simple_ecs_instance。
4. 单击查看详情，模板会显示为JSON格式。
   simple_ecs_instance模板的详细信息如下。

   {  
     "Description": "One simple ECS instance with a security group and a vSwitch in a VPC. The user only needs to specify the image ID.",  
     "Parameters": {    
       "ImageId": {      
         "Type": "String",      
         "Description": {        
           "en": "Image ID, represents the image resource to startup one ECS instance, <a href='https://www.alibabacloud.com/help/doc-detail/112977.htm?userCode=wrvvs1rm&zuntopl' target='_blank'>View image resources</a>",        
           "zh-cn": "镜像ID，详情请参见：<a href='https://help.aliyun.com/document_detail/112977.htm?userCode=wrvvs1rm&zuntopl' target='_blank'>查找镜像</a>。"      
         },      
         "Label": "ECS Image ID",      
         "Default": "centos_7"    
        },    
        "InstanceType": {      
          "Type": "String",      
          "Description": {        
            "en": "The ECS instance type, <a href='https://www.alibabacloud.com/help/doc-detail/25378.htm?userCode=wrvvs1rm&zuntopl' target='_blank'>View instance types</a>, please confirm the instance type if in the specific zone in ECS console. ",        
            "zh-cn": "ECS实例规格，详情请参见：<a href='https://help.aliyun.com/document_detail/25378.htm?userCode=wrvvs1rm&zuntopl' target='_blank'>实例规格族</a>ROS"      
          },       
          "Label": "ECS Instance Type",      
          "Default": "ecs.c5.large"    
         },    
         "Password": {      
           "NoEcho": true,      
           "Type": "String",      
           "Description": {         
             "en": "[8, 30] characters, consists of uppercase letter, lowercase letter, number or special characters such as ( ) ` ~ ! @ # $ % ^ & * - + = | { } [ ] : ; ‘ < > , . ? / ",        
             "zh-cn": "长度为8~30个字符。必须同时包含三项（大、小写字母，数字和特殊符号）。<br>支持以下特殊字符：( ) ` ~ ! @ # $ % ^ & * - + = | { } [ ] : ; ‘ < > , . ? /。"      
          },      
          "AllowedPattern": "[a-zA-Z0-9-\\(\\)\\`\\~\\!@\\#\\$%\\^&\\*-+=\\|\\{\\}\\[\\]\\:\\;\\‘\\,\\.\\?\\/]*",      
          "Label": "Login Password",      
          "ConstraintDescription": "[8, 30] characters, consists of uppercase letter, lowercase letter, number or special characters.",      
          "MinLength": 8,      
          "MaxLength": 30    
          }  
        },  
        "ROSTemplateFormatVersion": "2015-09-01",  
        "Outputs": {    
          "InstanceId": {      
            "Description": "The instance id of created ecs instance",      
            "Value": {        
              "Fn::GetAtt": [          
                "WebServer",          
                "InstanceId"        
              ]      
           }    
         },    
         "PublicIp": {      
           "Description": "Public IP address of created ecs instance.",      
           "Value": {        
             "Fn::GetAtt": [          
               "WebServer",          
               "PublicIp"        
             ]     
            }    
          },    
          "SecurityGroupId": {      
            "Description": "Generated security group id for security group.",      
            "Value": {        
              "Fn::GetAtt": [          
                "SecurityGroup",          
                "SecurityGroupId"        
              ]
         }
       }
     },  
   "Resources": {
      "VSwitch": {
        "Type": "ALIYUN::ECS::VSwitch",
        "Properties": { 
          "VpcId": {
            "Ref": "VPC"
          }, 
          "ZoneId": { 
            "Fn::Select": [ 
              "0",  
              {  
                "Fn::GetAZs": { 
                  "Ref": "ALIYUN::Region" 
               } 
              } 
            ]
          },  
          "CidrBlock": "192.168.XX.XX/16" 
        }
      }, 
      "WebServer": { 
        "Type": "ALIYUN::ECS::Instance",  
        "Properties": {
          "VpcId": { 
            "Ref": "VPC" 
          }, 
          "SecurityGroupId": { 
            "Ref": "SecurityGroup" 
          }, 
          "VSwitchId": { 
            "Ref": "VSwitch" 
          }, 
          "ImageId": { 
            "Ref": "ImageId" 
          }, 
          "InstanceType": { 
            "Ref": "InstanceType" 
          }, 
          "Password": { 
            "Ref": "Password" 
          } 
        } 
      }, 
      "VPC": { 
        "Type": "ALIYUN::ECS::VPC", 
        "Properties": { 
          "CidrBlock": "192.168.XX.XX/16", 
          "VpcName": "simple_ecs_vpc" 
        } 
      }, 
      "SecurityGroup": { 
        "Type": "ALIYUN::ECS::SecurityGroup", 
        "Properties": { 
          "VpcId": { 
            "Ref": "VPC" 
          } 
        } 
      } 
    }
   }

   这个JSON文本包含5个一级字段：

   • "ROSTemplateFormatVersion"定义模板的版本。
   • "Description"定义模板的解释说明。
   • "Parameters" : { }定义模板的参数。本例定义了镜像ID和实例规格等参数，并指定了参数的默认值。
   • "Resources" : { }定义模板可创建的阿里云资源。本例将创建一个ECS实例和一个安全组，资源属性将引用Parameters中定义的参数。
   • "Outputs": { }定义资源创建完成后，通过ROS输出栈的资源信息。本实例将输出ECS实例的ID、公网IP和安全组ID。
5. 单击右上角的创建资源栈。
6. 在配置模板参数页面，输入密码信息，单击创建。