json - 是否可以使用 AWS Cloudformation 模板将 Loadbalancers DNSname 连接到 Route53？

Question

我尝试连接的是负载均衡器 DNS 名称到 Route53。让我们看一下例子。这是来自资源中模板的 Loadbabancer:

"RestELB" : {
        "Type" : "AWS::ElasticLoadBalancing::LoadBalancer",
        "DependsOn": "AttachGateway",
        "Properties": {
            "LoadBalancerName": {"Fn::Join": ["",["Rest-ELB-", {"Ref": "VPC"}]]},
            "CrossZone" : "true",
            "Subnets": [{ "Ref": "PublicSubnet1" },{ "Ref": "PublicSubnet2" }],
            "Listeners" : [
                {"LoadBalancerPort" : "80", "InstancePort" : "80","Protocol" : "HTTP"},
                {"LoadBalancerPort" : "6060", "InstancePort" : "6060","Protocol" : "HTTP"}
            ],
        }
    },

这是 Route53:

"ApiRecordSet" : {
      "Type" : "AWS::Route53::RecordSet",
      "Properties" : {
        "AliasTarget" :{
          "DNSName" : [
            {"Fn::Join": ["", [{"ElasticLoadBalancer": "DNSName"},"."]]}
          ],
          "EvaluateTargetHealth" : "Boolean",
          "HostedZoneId" : "String"
        },
        "HostedZoneName" : "example.net.",
        "Comment" : "A records for my frontends.",
        "Name" : "api.example.net.",
        "Type" : "A",
        "TTL" : "900",
      }
    }

仅仅放置 {"ElasticLoadBalancer": "DNSName"} 不起作用。有人可以建议或给我正确的方法来添加这个吗？

谢谢!

Answer 1

您很可能想要获取引用为 RestELB 的 LoadBalancer 的属性 DNSName。所以你需要一些带有 Fn::GetAtt 的东西，比如(未经测试)

   "ApiRecordSet" : {
      "Type" : "AWS::Route53::RecordSet",
      "Properties" : {
        "AliasTarget" :{
          "DNSName" : { "Fn::GetAtt" : [ "RestELB", "DNSName" ]},
          "EvaluateTargetHealth" : "Boolean",
          "HostedZoneId" : "String"
        },
        "HostedZoneName" : "example.net.",
        "Comment" : "A records for my frontends.",
        "Name" : "api.example.net.",
        "Type" : "A"
      }
    }