[英]how do I implement if condition in my cloudformation stack
I have two attributes in my stack enviornment and iamprofileName. 我的堆栈环境和iamprofileName中有两个属性。 If I select one of the non-prod enviornment ie "use1dev","use1qa". 如果我选择非产品环境之一,即“ use1dev”,“ use1qa”。 I should get MyPlatformEC2NonProd as default value in "IAMProfileName" 我应该将MyPlatformEC2NonProd作为“ IAMProfileName”中的默认值
If I select one of the prod enviornments ie "useProd1","useProd2".I must get MyPlatformEC2Prod as default value in "IAMProfileName" 如果选择产品环境之一,即“ useProd1”,“ useProd2”。我必须在“ IAMProfileName”中获取MyPlatformEC2Prod作为默认值。
How can I achieve this 我该如何实现
"Environment" : {
"Description" : "Environment being deployed to - use1dev, use1qa,
use1sbox etc",
"Type" : "String",
"Default" : "use1sbox",
"AllowedValues" : ["use1dev","use1qa","useProd1","useProd2"]
},
"IAMProfileName" : {
"Default" : "MyPlatformEC2",
"Type" : "String",
"Description" : "Name of IAM profile to attach to created
machines",
"AllowedValues" : ["MyPlatformEC2","MyPlatformEC2NonProd"]
Use CloudFormation conditions. 使用CloudFormation条件。 For example in your case, I would do something like the following: 例如,在您的情况下,我将执行以下操作:
Conditions:
"ProdProfileCondition": {
"Fn::Or": [
{"Fn::Equals": ["useProd1", {"Ref": "Environment"}]},
{"Fn::Equals": ["useProd2", {"Ref": "Environment"}]},
]
}
Now wherever you want to use the IAMProfileName value, use something like the following, 现在,无论您想在哪里使用IAMProfileName值,都可以使用如下所示的内容,
SomeAWSResource:
Properties:
"ProfileName" : [{
"Fn::If" : [
"ProdProfileCondition",
{"Ref" : "MyPlatformEC2"},
{"Ref" : "MyPlatformEC2NonProd"}
]
}]
For more information on how to use conditionals, check out the following link. 有关如何使用条件句的更多信息,请查看以下链接。
Also, you can achieve more complicated conditionals using Jinja, just create a template and fill values according to conditions. 另外,您可以使用Jinja实现更复杂的条件,只需创建一个模板并根据条件填充值即可。 But I wouldn't go into details of that because what you need can be fulfilled by this already. 但我不会对此进行详细介绍,因为您的需求已经可以通过此方式实现。
https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/intrinsic-function-reference-conditions.html https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/intrinsic-function-reference-conditions.html
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