Did you deploy the plugin in an Instance of your ElasticSearch Cluster? How is your Network Configuration for your domain? Is it VPN Access or Internet?
Please let us know the following
what metrics you would like to monitor for your ES domain in AWS?
How many domains do you have? (or planning to have if you are just starting)
How many clusters do have?
I can assume you would have a Master Node as well.
We are planning to bring in ES monitoring as part of AWS monitoring itself. Would this fit into your scheme of things?
Product Manager, Site24x7