You should probably have a look at remote logging and monitoring.
LogStash and ElasticSearch on AWS will provide you with a relatively easy way to get logs from your clients. Bundled with Kibana, you can turn those logs into nice, easily readable graphs. These 3 are commonly known as the ELK stack (now the Elastic Stack), and work well together. Mounting those on AWS is not a requirement, but will probably be cheaper and easier than buying and maintaining your own servers.
Have a look here:
https://aws.amazon.com/elasticsearch-service/logstash/https://aws.amazon.com/elasticsearch-service/what-is-elasticsearch/https://aws.amazon.com/elasticsearch-service/kibana/