使用CloudFormation将CloudWatch添加到堆栈中

Question

I am currently in charge of adding CloudWatch integration to an already made Cloud Formation stack.

We create the stacks through CLI, but at the moment we add CloudWatch manually afterwards.

What i need is to automatically activate CloudWatch for instances and monitor CPU, hdd and so on through the use of CloudFormation templates.

Thanks in advance!

Answer 1

My suggestion is that you don't add new CloudWatch items to the existing CloudFormation stack. Instead, create a CF template with the appropriate metrics and deploy from this template for each instance you want to monitor.

From there, I suggest you create an AWS Lambda function that will receive an Instance Id as input and will deploy a CloudFormation stack against the instance. You should enable CloudTrail on your account and create a Rule to match any RunInstances event on the account and trigger the Lambda function.

Keep in mind the default limit for CloudFormation stacks is 200. You might need to request an increase depending on your use case.