What AWS IAM policies are needed to send data to CloudWatch with EC2 and ECS?

Question

Amazon Web Services

It seems like there is one AWS Managed policy for these purposes.

Answer 1

Just the other day I was playing with the cloudwatch agent.
As far as I understand, you need
cloudwatch:PutMetricData
cloudwatch:GetMetricStatistics
cloudwatch:ListMetrics
ec2:DescribeTags
And if ready-made, it works with
AmazonEC2ReadOnlyAccess
CloudWatchFullAccess
but you can probably shrink it.