Question

我遇到的情况是，我的应用程序部署在不同的环境（产品和阶段）中。我有一个带有以下参数的通用cftemplate.json

"Parameters" : {
    "EnvType" : {
      "Description" : "Environment type.",
      "Default" : "test",
      "Type" : "String",
      "AllowedValues" : ["prod", "stage"],
      "ConstraintDescription" : "must specify prod or test."
    }
  },

  "Conditions" : {
    "CreateProdResources" : {"Fn::Equals" : [{"Ref" : "EnvType"}, "prod"]}
  },

现在我有警报了，

"AppServerHealthCheckAlarm":{
     "Type":"AWS::CloudWatch::Alarm",
     "Properties":{
        "AlarmName" : {"Fn::Join" : ["", [
           {"Ref" : "AppId"}, ",",
           {"Ref" : "AppServerAG"}, ":", "HealthCheck", ",", "MAJOR"]]},
 ------
 ------
 ------
  }
},

现在，我想将此fn :: join放在fn :: if条件内，以便于prod应该是主要的，对于stage应该是minor的。

我应该如何配置

Answer 1

我认为与其将Fn::Join包装在Fn::If内，反而更好。这应该可以正常工作：

{
    "AlarmName":
    {"Fn::Join": ["",
                  [{"Ref" : "AppId"},
                   ",",
                   {"Ref" : "AppServerAG"},
                   ":",
                   "HealthCheck",
                   ",",
                   {"Fn::If": ["CreateProdResources", "MAJOR", "MINOR"]}
                  ]
    ]}
}

我可以在cftemplate格式中将fn :: join放入fn :: if语句中吗

1 个答案: