Question

我写了一个创建Linux docker主机的CloudFormation模板。

我想在＆＃34;输出＆＃34;下显示机器的PublicIP。部分。

这是模板的相关部分：

"Outputs" : {
    "ServerAddress" : {
      "Value" : { "Fn::GetAtt" : [ "Server", "PublicDnsName" ] },
      "Description" : "Server Domain Name"
    },
    "SecurityGroup" : {
      "Value" : { "Fn::GetAtt" : [ "ServerSecurityGroup", "GroupId" ] },
      "Description" : "Server Security Group Id"
    },
    "PublicIp" : {
      "Value" : { "Fn::GetAtt" : [ "ServerPublicIp", "PublicIp" ]},
      "Description" : "Server's PublicIp Address"
    },
  }

我已在official AWS documentation中读到关于使用＆＃34; Fn :: GetAtt＆＃34;并尝试在我的模板中实现它，但当我尝试创建堆栈时，我收到以下错误：

Error
Template validation error: Template error: instance of Fn::GetAtt references undefined resource ServerPublicIp

据我所知，GetAtt系列的第一部分是LogicalName（我可以选择？），第二部分是上面链接中显示的真实属性。

所以我的问题是如何在Outputs部分下显示服务器的PublicIP？

Answer 1

假设您的模板中有一个名为<table class="mGrid"> <thead> <tr class="hdr"> <th><a href="http://google.com">Nº Despesa</a></th> <th><a href="http://google.com">Consultor</a></th> <th><a href="http://google.com">Setor</a></th> <th><a href="http://google.com">Empresa</a></th> <th><a href="http://google.com">Motivo</a></th> <th><a href="http://google.com">Data</a></th> <th><a href="http://google.com">Hotel</a></th> <th><a href="http://google.com">Refeição</a></th> <th><a href="http://google.com">Veículo</a></th> <th><a href="http://google.com">Taxi</a></th> <th><a href="http://google.com">Outros</a></th> <th>Vlr Total</th> <th>Comprovantes OK</th> <th>Aprovado</th> <th>Status Visita</th> </tr> </thead> <tbody> <tr class="nrm"> <td>00392-05-01</td> <td>Names na</td> <td>Plantão 24x7</td> <td>Empres</td> <td>Serviço</td> <td>06-03-2017</td> <td>Não</td> <td>R$ 80,00</td> <td>R$ 0,00</td> <td>R$ 150,00</td> <td>R$ 0,00</td> <td>R$ 230,00</td> <td>Sim</td> <td>Sim</td> <td>Liquidado</td> </tr> <tr class="alt"> <td>00392-03-01</td> <td>Names Names Names</td> <td>Plantão 24x7</td> <td>EMPR</td> <td>Serviço</td> <td>31-01-2017</td> <td>Não</td> <td>R$ 80,00</td> <td>R$ 0,00</td> <td>R$ 100,00</td> <td>R$ 0,00</td> <td>R$ 180,00</td> <td>Sim</td> <td>Sim</td> <td>Liquidado</td> </tr> <tr class="nrm"> <td>00392-02-01</td> <td>Names na Names Namesnam</td> <td>Plantão 24x7</td> <td>Empres</td> <td>Serviço</td> <td>31-01-2017</td> <td>Sim</td> <td>R$ 80,00</td> <td>R$ 0,00</td> <td>R$ 100,00</td> <td>R$ 0,00</td> <td>R$ 180,00</td> <td>Sim</td> <td>Sim</td> <td>Liquidado</td> </tr> <tr class="alt"> <td>00392-01-02</td> <td>Names na Names Namesnam</td> <td>Plantão 24x7</td> <td>EMPR</td> <td>Relacionamentos</td> <td>31-01-2017</td> <td>Não</td> <td>R$ 30,00</td> <td>R$ 0,00</td> <td>R$ 100,00</td> <td>R$ 0,00</td> <td>R$ 130,00</td> <td>Sim</td> <td>Sim</td> <td>Liquidado</td> </tr> <tr class="nrm"> <td>00392-01-01</td> <td>Names na Names</td> <td>Plantão 24x7</td> <td>EMPR</td> <td>Relacionamentos</td> <td>30-01-2017</td> <td>Sim</td> <td>R$ 80,00</td> <td>R$ 0,00</td> <td>R$ 100,00</td> <td>R$ 0,00</td> <td>R$ 180,00</td> <td>Sim</td> <td>Sim</td> <td>Liquidado</td> </tr> <tr class="alt"> <td>00388-01-01</td> <td>Names na Namesnam</td> <td>Requisitos</td> <td>Empres</td> <td>Serviço</td> <td>01-02-2017</td> <td>Não</td> <td>R$ 0,00</td> <td>R$ 246,60</td> <td>R$ 0,00</td> <td>R$ 0,00</td> <td>R$ 246,60</td> <td>Sim</td> <td>Sim</td> <td>Liquidado</td> </tr> <tr class="nrm"> <td>00387-02-01</td> <td>Names na Names Namesnam</td> <td>Middleware</td> <td>Empresa Empresaempr EMPR-ESA</td> <td>Serviço</td> <td>26-01-2017</td> <td>Não</td> <td>R$ 0,00</td> <td>R$ 266,00</td> <td>R$ 0,00</td> <td>R$ 0,00</td> <td>R$ 266,00</td> <td>Sim</td> <td>Sim</td> <td>Liquidado</td> </tr> <tr class="alt"> <td>00387-01-01</td> <td>Names na Names Namesnam</td> <td>Middleware</td> <td>Empres</td> <td>Vendas</td> <td>25-01-2017</td> <td>Não</td> <td>R$ 0,00</td> <td>R$ 185,00</td> <td>R$ 0,00</td> <td>R$ 0,00</td> <td>R$ 185,00</td> <td>Sim</td> <td>Sim</td> <td>Liquidado</td> </tr> </tbody> <tfoot> <tr class="pgr"> <td colspan="16"> <table> <tbody> <tr> <td>1</td> <td><a href="http://google.com">2</a></td> <td><a href="http://google.com">3</a></td> <td><a href="http://google.com">4</a></td> <td><a href="http://google.com">5</a></td> <td><a href="http://google.com">6</a></td> <td><a href="http://google.com">7</a></td> <td><a href="http://google.com">8</a></td> <td><a href="http://google.com">9</a></td> <td><a href="http://google.com">10</a></td> <td><a href="http://google.com">...</a></td> </tr> </tbody> </table> </td> </tr> </tfoot> </table>的EC2实例资源：

Server

输出引用其资源名称的公共IP地址：

"Server" : {
    "Type" : "AWS::EC2::Instance",
    "Properties" : {
    }
}

Answer 2

如docs中所述，可以选择输出输出以进行跨栈引用。如果这是您的用例：

JSON：

"Outputs" : {
  "PublicIp" : {
    "Value" : { "Fn::GetAtt" : ["Server", "PublicIp"]},
    "Description" : "Server Public IP"
    "Export" : {
      "Name" : {"Fn::Sub": "${AWS::StackName}-PublicIP"}
    }
  }
}

YAML：

Outputs:
  PublicIp:
    Description: Server Public IP
    Value: !GetAtt Server.PublicIp
    Export:
      Name: !Sub "${AWS::StackName}-PublicIp"

另请参阅：

AWS :: EC2 :: Instance属性和docs中的返回值。

AWS CloudFormation：如何输出机器的PublicIP？

2 个答案: