fuel-plugin-dynatrace/doc/user/source/limitations.rst

Limitations

The node with the Dynatrace Security Gateway role needs to have network access to either the Dynatrace Managed cluster or the Dynatrace SaaS endpoint. Furthermore, if you want to monitor your applications that run on top of OpenStack as well, you need to install the Dynatrace OneAgent in your workloads and you need to make sure, that the Dynatrace OneAgent has network access to the node with the Dynatrace Security Gateway role.

Find more information about the necessary configuration steps here:

Dynatrace Security Gateway Help