GCP Monitoring can't get metrics from asia-southeast1-b

Question

I've several GCE instances located two zone: asia-southeast1-b and us-east4-c. All instances have already install stackdriver agent. In metrics explorer, I can't find asia-southeast1-b in CPU load metric:

But CPU Usage is OK:

What's wrong with this?

Answer 1

I've fixed this error by adding Monitoring Metric Writer permission to the service account.

https://stackoverflow.com/a/45068262/380774