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    Resource Orchestration Service:Connect an ECS instance to an ApsaraDB RDS instance to initialize data

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    Resource Orchestration Service:Connect an ECS instance to an ApsaraDB RDS instance to initialize data

    最終更新日:Apr 23, 2023

    This topic helps you walk through the process about how to create a Resource Orchestration Service (ROS) template. In this example, a template that declares the resources used to connect an Elastic Compute Service (ECS) instance to an ApsaraDB RDS instance for data initialization is created.

    Prerequisites

    You are familiar with the syntax and the structure of ROS templates. For more information, see Getting started with templates.

    Sample scenario

    You want to create an ECS instance and an ApsaraDB RDS instance in a virtual private cloud (VPC) and obtain the connection information about the ApsaraDB RDS database from the ECS instance to initialize data.2023-04-21_10-40-06

    Usage notes

    You can view the resource types of the preceding resources to view the details of each resource property. For more information, see View resource types.

    A resource type identifies the type of the resource that you want to use and declares the properties that you can specify for the resource. For example, the type, whether required, and whether editable are declared for a property in a resource type. If a property is required, you must declare the property in the Properties part of the Resources section of a template. Otherwise, the property is optional. If a property is editable, you can modify the property in a new template after the property is specified for a cloud resource in a stack template. Then, you can use the new template to update the stack and the resource. Otherwise, you cannot modify the property.

    Create a template

    You can refer to the documentation of resource types to find the resource types that best suit your needs. For more information, see List of resource types by service.

    In this example, the following resource types are used: ALIYUN::ECS::VPC (creates a VPC), ALIYUN::ECS::Instance (creates an ECS instance), ALIYUN::RDS::DBInstance (creates an ApsaraDB RDS instance), ALIYUN::ECS::VSwitch (creates a vSwitch to which the ECS instance is connected), ALIYUN::ECS::SecurityGroup (creates a security group), and ALIYUN::ECS::RunCommand (runs a command to initialize data).

    You can specify the preceding resource types in the Resources section of the template that you want to create.

    Specify resources and associate the resources

    Specify basic network resources

    Specify the following basic network resources in the template: Vpc, VSwitch, and EcsSecurityGroup. Perform the following operations:

    • Set the Ref function to the ALIYUN::StackName pseudo parameter to obtain the stack name. Then, set a property to Ref: ALIYUN::StackName to associate the property value with the stack name. In the following sample template fragment, the value of VpcName in Vpc and the value of VSwitchName in VSwitch are associated with the stack name. For more information, see Ref and ALIYUN::StackName.

    • Use the Fn::Select and Fn::GetAZs functions together with the ALIYUN::Region pseudo parameter to obtain the first zone ID of the region where the stack resides. In the following sample template fragment, the value of ZoneId in VSwitch is obtained. For more information, see Functions and ALIYUN::Region. 

    Resources:
  Vpc:
    Type: ALIYUN::ECS::VPC
    Properties:
      CidrBlock: 192.168.0.0/16
      VpcName:
        Ref: ALIYUN::StackName
  VSwitch:
    Type: ALIYUN::ECS::VSwitch
    Properties:
      VSwitchName:
        Ref: ALIYUN::StackName
      VpcId:
        Ref: Vpc
      ZoneId:
        Fn::Select:
          - '0'
          - Fn::GetAZs:
              Ref: ALIYUN::Region
      CidrBlock: 192.168.0.0/24
  EcsSecurityGroup:
    Type: ALIYUN::ECS::SecurityGroup
    Properties:
      SecurityGroupName:
        Ref: ALIYUN::StackName
      VpcId:
        Ref: Vpc
      SecurityGroupEgress:
        - PortRange: '-1/-1'
          Priority: 1
          IpProtocol: all
          DestCidrIp: 0.0.0.0/0
          NicType: intranet

    Specify database resources

    You can specify the following database resources in the template: DBInstance and DBAccount. Perform the following operation:

    Use the Fn::GetAtt function to return the property value of a resource. In the following sample template fragment, the value of DBInstanceId in DBAccount is returned. For more information, see Fn::GetAtt. 

    Resources:
  DBInstance:
    Type: ALIYUN::RDS::DBInstance
    Properties:
      ZoneId:
        Fn::Select:
          - '0'
          - Fn::GetAZs:
              Ref: ALIYUN::Region
      VpcId:
        Ref: Vpc
      VSwitchId:
        Ref: VSwitch
      Engine: MySQL
      EngineVersion: '8.0'
      DBInstanceClass: mysql.n4.medium.2c
      DBInstanceStorage: 10
      MultiAZ: true
      DBInstanceNetType: Intranet
      DBMappings:
        - CharacterSetName: utf8
          DBName: employees
      SecurityIPList: 0.0.0.0/0
  DBAccount:
    Type: ALIYUN::RDS::Account
    DependsOn:
      - DBInstance
    Properties:
      DBInstanceId:
        Fn::GetAtt:
          - DBInstance
          - DBInstanceId
      AccountPassword:
        Ref: DBPassword
      AccountType: Super
      AccountName: rdsuser

    Specify ECS resources

    You can specify the following ECS resources in the template: EcsInstance and InstanceRunCommand. Perform the following operation:

    Use the Fn::Sub function to substitute variables in an input string with commands that you want to run. In the following sample template fragment, the commands are specified in the value of CommandContent in InstanceRunCommand. For more information, see Fn::Sub.

    Note

    The initialized data in the sample template fragment is the test data provided by MySQL. To ensure the network stability when test data is downloaded, we recommend that you store the data in an Object Storage Service (OSS) bucket before you perform the operation. 

    Resources:
	EcsInstance:
    Type: ALIYUN::ECS::Instance
    Properties:
      VpcId:
        Ref: Vpc
      SecurityGroupId:
        Ref: EcsSecurityGroup
      VSwitchId:
        Ref: VSwitch
      ImageId: centos_7
      AllocatePublicIP: false
      InstanceType: ecs.c5.large
      SystemDiskSize: 40
      SystemDiskCategory: cloud_essd
      Password:
        Ref: EcsInstancePassword
  InstanceRunCommand:
    Type: ALIYUN::ECS::RunCommand
    Properties:
      CommandContent:
        Fn::Sub:
          - |
            #!/bin/bash
            yum -y install holland-mysqldump.noarch unzip
            wget -P /tmp https://ros-userdata-resources.oss-cn-beijing.aliyuncs.com/MySQL/test_db-master.zip
            unzip /tmp/test_db-master.zip -d /tmp/
            mysql -h${DBConnectString} -p3306 -urdsuser -p${DBPassword} < /tmp/test_db-master/employees.sql
          - DBConnectString:
              Fn::GetAtt:
                - DBInstance
                - InnerConnectionString
            DBPassword:
              Ref: DBPassword
      Type: RunShellScript
      InstanceIds:
        - Fn::GetAtt:
            - EcsInstance
            - InstanceId
      Timeout: '300'

    Complete sample template

    ROSTemplateFormatVersion: '2015-09-01'
Description: { }
Parameters:
  EcsInstancePassword:
    NoEcho: true
    Type: String
    Description:
      en: Server login password, Length 8-30, must contain three(Capital letters, lowercase letters, numbers, ()`~!@#$%^&*_-+=|{}[]:;'<>,.?/ Special symbol in)
       
    AllowedPattern: '[0-9A-Za-z\_\-\&:;''<>,=%`~!@#\(\)\$\^\*\+\|\{\}\[\]\.\?\/]+$'
    Label:
      en: Instance Password
       
    ConstraintDescription:
      en: Length 8-30, must contain three(Capital letters, lowercase letters, numbers, ()`~!@#$%^&*_-+=|{}[]:;'<>,.?/ Special symbol in).
       
    MinLength: 8
    MaxLength: 30
  DBPassword:
    NoEcho: true
    Type: String
    Label:
      en: DB Password
       
Resources:
  Vpc:
    Type: ALIYUN::ECS::VPC
    Properties:
      CidrBlock: 192.168.0.0/16
      VpcName:
        Ref: ALIYUN::StackName
  VSwitch:
    Type: ALIYUN::ECS::VSwitch
    Properties:
      VSwitchName:
        Ref: ALIYUN::StackName
      VpcId:
        Ref: Vpc
      ZoneId:
        Fn::Select:
          - '0'
          - Fn::GetAZs:
              Ref: ALIYUN::Region
      CidrBlock: 192.168.0.0/24
  EcsSecurityGroup:
    Type: ALIYUN::ECS::SecurityGroup
    Properties:
      SecurityGroupName:
        Ref: ALIYUN::StackName
      VpcId:
        Ref: Vpc
      SecurityGroupEgress:
        - PortRange: '-1/-1'
          Priority: 1
          IpProtocol: all
          DestCidrIp: 0.0.0.0/0
          NicType: intranet
  DBInstance:
    Type: ALIYUN::RDS::DBInstance
    Properties:
      ZoneId:
        Fn::Select:
          - '0'
          - Fn::GetAZs:
              Ref: ALIYUN::Region
      VpcId:
        Ref: Vpc
      VSwitchId:
        Ref: VSwitch
      Engine: MySQL
      EngineVersion: '8.0'
      DBInstanceClass: mysql.n4.medium.2c
      DBInstanceStorage: 10
      MultiAZ: true
      DBInstanceNetType: Intranet
      DBMappings:
        - CharacterSetName: utf8
          DBName: employees
      SecurityIPList: 0.0.0.0/0
  EcsInstance:
    Type: ALIYUN::ECS::Instance
    Properties:
      VpcId:
        Ref: Vpc
      SecurityGroupId:
        Ref: EcsSecurityGroup
      VSwitchId:
        Ref: VSwitch
      ImageId: centos_7
      AllocatePublicIP: false
      InstanceType: ecs.c5.large
      SystemDiskSize: 40
      SystemDiskCategory: cloud_essd
      Password:
        Ref: EcsInstancePassword
  Account:
    Type: ALIYUN::RDS::Account
    DependsOn:
      - DBInstance
    Properties:
      DBInstanceId:
        Fn::GetAtt:
          - DBInstance
          - DBInstanceId
      AccountPassword:
        Ref: DBPassword
      AccountType: Super
      AccountName: rdsuser
  InstanceRunCommand:
    Type: ALIYUN::ECS::RunCommand
    DependsOn:
      - Account
    Properties:
      CommandContent:
        Fn::Sub:
          - |
            #!/bin/bash
            yum -y install holland-mysqldump.noarch unzip
            wget -P /tmp https://ros-userdata-resources.oss-cn-beijing.aliyuncs.com/MySQL/test_db-master.zip
            unzip /tmp/test_db-master.zip -d /tmp/
            mysql -h${DBConnectString} -p3306 -urdsuser -p${DBPassword} < /tmp/test_db-master/employees.sql
          - DBConnectString:
              Fn::GetAtt:
                - DBInstance
                - InnerConnectionString
            DBPassword:
              Ref: DBPassword
      Type: RunShellScript
      InstanceIds:
        - Fn::GetAtt:
            - EcsInstance
            - InstanceId
      Timeout: '300'

    Add parameter groups to a template and display the optional values of a parameter based on a filter condition

    The preceding sample template declares multiple resources and their associations. The values of InstanceType and SystemDiskCategory in EcsInstance and the value of DBInstanceClass in DBInstance are literal values. Each time you create a stack in a different region, you must modify the template structure and change the property values.

    In this case, you can add the Parameters section to improve the flexibility and reusability of the template.

    Add parameter groups to a template

    You can add the Metadata section to a template to group the parameters that are defined in the Parameters section and define a label for each group.

    You can classify parameters by resource or by resource parameter. The following table lists parameter groups that are added based on the preceding sample template. In this example, the parameters are classified by resource name or resource parameter name.

    Parameter group

    Resource name

    Resource parameter name

    Basic network configurations

    Vpc, VSwitch and EcsSecurityGroup

    VSwitchZoneId, VpcCidrBlock and VSwitchCidrBlock

    Database configurations

    DBInstance and DBAccount

    DBInstanceClass, DBInstanceStorage, DBName, DBUsername and DBPassword

    ECS configurations

    EcsInstance and InstanceRunCommand

    ECSInstanceType, ECSDiskSize, ECSDiskCategory and EcsInstancePassword

    Display the optional values of a parameter based on a filter condition

    If you want to specify a filter condition for a parameter and associate the parameter value with the filter condition chosen in the ROS console, you can specify AssociationProperty and AssociationPropertyMetadata in your template. In this example, the optional values of the ECSInstanceType parameter are displayed based on the value of ZoneId. To specify AssociationProperty and AssociationPropertyMetadata in ECSInstanceType, perform the following operations: In the official documentation of ROS, use ALIYUN::ECS::Instance to query the value of AssociationProperty that is supported by ECSInstanceType. The following value is queried: ALIYUN::ECS::Instance::InstanceType. Then, query the value of AssociationPropertyMetadata when AssociationProperty is set to ALIYUN::ECS::Instance::InstanceType and ZoneId is used as a filter condition. For more information about the official documentation, see AssociationProperty and AssociationPropertyMetadata.

    Complete sample template

    ROSTemplateFormatVersion: '2015-09-01'
Description: { }
Parameters:
  VSwitchZoneId:
    Type: String
    AssociationProperty: ALIYUN::ECS::Instance::ZoneId
    Description:
      en: Availability ID for existing switches
       
    Label:
      en: VSwitch Zone ID
       
  VpcCidrBlock:
    Default: 192.168.0.0/16
    Label:
       
      en: VPC CIDR Block
    Type: String
    Description:
       
      en: New proprietary network IP address segment range, recommended use of the following IP address segments<br><font color='green'>[10.0.XX.XX/8]</font><br><font color='green'>[172.16.XX.XX/12]</font><br><font color='green'>[192.168.XX.XX/16]</font>
  VSwitchCidrBlock:
    Default: 192.168.0.0/24
    Type: String
    Description:
       
      en: Must be a sub-network segment of the proprietary network and is not occupied by other VSwitches.
    Label:
       
      en: VSwitch CIDR Block
  ECSInstanceType:
    Type: String
    Description:
      en: <font color='blue'><b>1.Before selecting the model please confirm that the current available zone under the model is in stock, some models need to be reported in advance</b></font>]<br><font color='blue'><b>2.List of optional models</font>]<br></b></font>[ecs.c5.large <font color='green'>2vCPU 4GiB Intranet bandwidth1Gbps In-grid sending and receiving packages30MillionPPSS</font>]<br></b>[ecs.c5.xlarge <font color='green'>4vCPU 8GiB Intranet bandwidth1.5Gbps In-grid sending and receiving packages50MillionPPS</font>]<br></b>[ecs.c5.2xlarge <font color='green'>8vCPU 16GiB Intranet bandwidth2.5Gbps In-grid sending and receiving packages80MillionPPS</font>]
       
    Label:
      en: Instance Type
       
    AssociationProperty: ALIYUN::ECS::Instance::InstanceType
    AssociationPropertyMetadata:
      ZoneId: ${VSwitchZoneId}
  ECSDiskSize:
    Type: Number
    Description:
      en: 'The size of the instance system disk, in GiB. Value range: 40 to 500'
       
    Label:
      en: System Disk Space
       
    MinValue: 40
    MaxValue: 500
    Default: 40
  ECSDiskCategory:
    Type: String
    Description:
      en: '<font color=''blue''><b>Optional values:</b></font><br>[cloud_efficiency: <font color=''green''>Efficient Cloud Disk</font>]<br>[cloud_ssd: <font color=''green''>SSD Cloud Disk</font>]<br>[cloud_essd: <font color=''green''>ESSD Cloud Disk</font>]<br>[cloud: <font color=''green''>Cloud Disk</font>]<br>[ephemeral_ssd: <font color=''green''>Local SSD Cloud Disk</font>]'
       
    AssociationProperty: ALIYUN::ECS::Disk::SystemDiskCategory
    AssociationPropertyMetadata:
      ZoneId: ${VSwitchZoneId}
      InstanceType: ${ECSInstanceType}
    Label:
      en: System Disk Type
       
  EcsInstancePassword:
    NoEcho: true
    Type: String
    Description:
      en: Server login password, Length 8-30, must contain three(Capital letters, lowercase letters, numbers, ()`~!@#$%^&*_-+=|{}[]:;'<>,.?/ Special symbol in)
       
    AllowedPattern: '[0-9A-Za-z\_\-\&:;''<>,=%`~!@#\(\)\$\^\*\+\|\{\}\[\]\.\?\/]+$'
    Label:
      en: Instance Password
       
    ConstraintDescription:
      en: Length 8-30, must contain three(Capital letters, lowercase letters, numbers, ()`~!@#$%^&*_-+=|{}[]:;'<>,.?/ Special symbol in).
       
    MinLength: 8
    MaxLength: 30
  DBInstanceClass:
    Label:
       
      en: DB Instance Class
    AssociationProperty: ALIYUN::RDS::Instance::InstanceType
    AssociationPropertyMetadata:
      Engine: MySQL
      ZoneId: ${VSwitchZoneId}
    Type: String
    Description:
       
      en: 'Select the instance specification based on the type of database engine and the available area support;<br>see detail: <a href=''https://www.alibabacloud.com/help/doc-detail/26312.html'' target=''_blank''><b><font color=''blue''>Instance specification sheet</font></b></a>'
  DBInstanceStorage:
    Label:
       
      en: Storage
    Type: Number
    Description:
       
      en: The size range of RDS instances is 20 - 2000, Incrementing in every 5, unit GB
    MinValue: 20
    MaxValue: 2000
    ConstraintDescription:
       
      en: The size range of RDS instances is 20 - 2000, Incrementing in every 5, unit GB
    Default: 200
  DBName:
    Type: String
    Label:
      en: DB Name
       
    ConstraintDescription:
       
      en: Must begin with a letter and contain only alphanumeric characters.
    MinLength: 1
    MaxLength: 64
    Default: employees
  DBUsername:
    Type: String
    Description:
      en: Primary account name of the database instance.
       
    ConstraintDescription:
      en: Consist of 2 to 16 characters of lowercase letters, underline. Must begin with a letter and be end with an alphanumeric character
        
    Label:
       
      en: DB Username
    Default: rdsuser
    MaxLength: 16
    MinLength: 2
  DBPassword:
    NoEcho: true
    Type: String
    Label:
      en: DB Password
       
Resources:
  Vpc:
    Type: ALIYUN::ECS::VPC
    Properties:
      CidrBlock:
        Ref: VpcCidrBlock
      VpcName:
        Ref: ALIYUN::StackName
  VSwitch:
    Type: ALIYUN::ECS::VSwitch
    Properties:
      VSwitchName:
        Ref: ALIYUN::StackName
      VpcId:
        Ref: Vpc
      ZoneId:
        Ref: VSwitchZoneId
      CidrBlock:
        Ref: VSwitchCidrBlock
  EcsSecurityGroup:
    Type: ALIYUN::ECS::SecurityGroup
    Properties:
      SecurityGroupName:
        Ref: ALIYUN::StackName
      VpcId:
        Ref: Vpc
      SecurityGroupIngress:
        - PortRange: '-1/-1'
          Priority: 1
          IpProtocol: all
          NicType: intranet
          SourceCidrIp: '0.0.0.0/0'
  DBInstance:
    Type: ALIYUN::RDS::DBInstance
    Properties:
      VpcId:
        Ref: Vpc
      VSwitchId:
        Ref: VSwitch
      Engine: MySQL
      EngineVersion: '8.0'
      DBInstanceClass:
        Ref: DBInstanceClass
      DBInstanceStorage:
        Ref: DBInstanceStorage
      DBInstanceNetType: Intranet
      DBMappings:
        - CharacterSetName: utf8
          DBName:
            Ref: DBName
      SecurityIPList: 0.0.0.0/0
  DBAccount:
    Type: ALIYUN::RDS::Account
    DependsOn:
      - DBInstance
    Properties:
      DBInstanceId:
        Fn::GetAtt:
          - DBInstance
          - DBInstanceId
      AccountPassword:
        Ref: DBPassword
      AccountType: Super
      AccountName:
        Ref: DBUsername
  EcsInstance:
    Type: ALIYUN::ECS::Instance
    Properties:
      VpcId:
        Ref: Vpc
      SecurityGroupId:
        Ref: EcsSecurityGroup
      VSwitchId:
        Ref: VSwitch
      ImageId: centos_7
      AllocatePublicIP: true
      InstanceType:
        Ref: ECSInstanceType
      SystemDiskSize:
        Ref: ECSDiskSize
      SystemDiskCategory:
        Ref: ECSDiskCategory
      Password:
        Ref: EcsInstancePassword
  InstanceRunCommand:
    Type: ALIYUN::ECS::RunCommand
    DependsOn:
      - DBAccount
    Properties:
      CommandContent:
        Fn::Sub:
          - |
            #!/bin/bash
            yum -y install holland-mysqldump.noarch unzip
            wget -P /tmp https://ros-userdata-resources.oss-cn-beijing.aliyuncs.com/MySQL/test_db-master.zip
            unzip /tmp/test_db-master.zip -d /tmp/
            mysql -h${DBConnectString} -p3306 -u${DBUsername} -p${DBPassword} < /tmp/test_db-master/employees.sql
          - DBConnectString:
              Fn::GetAtt:
                - DBInstance
                - InnerConnectionString
            DBUsername:
              Ref: DBUsername
            DBPassword:
              Ref: DBPassword
      Type: RunShellScript
      InstanceIds:
        - Fn::GetAtt:
            - EcsInstance
            - InstanceId
      Timeout: '500'
Metadata:
  ALIYUN::ROS::Interface:
    ParameterGroups:
      - Parameters:
          - VSwitchZoneId
          - VpcCidrBlock
          - VSwitchCidrBlock
        Label:
          default:
             
            en: Basic Network Configuration
      - Parameters:
          - ECSInstanceType
          - ECSDiskSize
          - ECSDiskCategory
          - EcsInstancePassword
        Label:
          default:
            en: Instance
             
      - Parameters:
          - DBInstanceClass
          - DBInstanceStorage
          - DBName
          - DBUsername
          - DBPassword
        Label:
          default:
            en: Database