如何使用 CloudFormation 为多个日志组创建 AWS CloudWatch 订阅过滤器

Question

Good morning,

I have found those documents: https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-logs-subscriptionfilter.html https://docs.aws.amazon.com/AmazonCloudWatch/latest/logs/SubscriptionFilters.html#LambdaFunctionExample

I want to use CloudFormation to create Subscription, that will handle multiple Log Groups at once. Also, I want to create separate Subscription, that will handle all Log Groups.

Can I do it by single entry in CloudFormation yaml?

Answer 1

I see what you mean now, and you are right AWS::Logs::SubscriptionFilter does not support creating multiple subscription at once.

If you really want to automate this and keep it within CloudFormation (CFN), you would have to develop CFN macro or custom resource . In both cases you would have to write your own lambda function which could create your subscriptions iteratively in a loop, based on the input parameters, eg a list of log groups. The lambda would have to use AWS SDK for that with proper execution role.