Compute Optimizer is no longer able to read CloudWatch memory metrics ?

Hello @MVR-060709, Thanks for your input. I have checked again the configuration and nothing has change from my side:

And as I said before, is happening in several accounts accros several regions.

Kind regards.

Hello! There are a number of different permissions which are required for Compute Optimizer to access the metrics and then also for those recommendation to be viewable to you. To view EC2 metrics in Compute Optimizer, the user/role you are logged in with would need the ec2:DescribeInstances permission. To view CloudWatch metrics in Compute Optimizer, you would need the cloudwatch:GetMetricData permission. (Source: https://docs.aws.amazon.com/compute-optimizer/latest/ug/security-iam.html)

From a Compute Optimizer perspective, I recommend you leverage a service-linked role (if you aren't already). This will ensure that Compute Optimizer has all of the permissions it requires to interact with other services. I've included a link to how to recreate the role if it has been inadvertently removed. https://docs.aws.amazon.com/compute-optimizer/latest/ug/using-service-linked-roles.html

Hope this is helpful!