AWS CloudFormation Error 'Value of property AlarmActions must be of type List of String'

Question

我正在尝试更新我的cf堆栈，在部署时遇到以下错误："属性AlarmActions的值必须是字符串列表类型">

这是属性AlarmActions:

AlarmActions:
- !Ref SparksTeamSNSTopic
- !If
- CreateProdResources
- - !Ref SparksProdAlarmSNSTopic
- !ImportValue
'Fn::Sub': '${Environment}-BMCMajorAlarmTopic'
- - !Ref 'AWS::NoValue'                   

Answer 1

根据AWS文档，AlarmActions属性必须包含值，作为字符串列表。因此，如果它是JSON:，您应该有这样的东西

"AlarmActions":[
{"Ref":"ARN of something"},
{"Ref":"ARN of something"}           
]

但既然你已经使用了YAML，你应该有这样的东西：

AlarmActions:
- !Split [",", !Ref SparksTeamSNSTopic]  <-- make sure SparksTeamSNSTopic contains a list of strings; hence this will split it by comma 

您可以将SparksTeamSNSTopic定义为

"SparksTeamSNSTopic" : ["topicarn1", "topicarn2"]

Answer 2

试试这个，

AlarmActions:
- !Ref SparksTeamSNSTopic
- !If
- CreateProdResources
- - !Ref SparksProdAlarmSNSTopic
- !ImportValue
'Fn::Sub': '${Environment}-BMCMajorAlarmTopic'
- !Ref 'AWS::NoValue'