How Does eG Enterprise Monitor the Horizon Unified Access Gateway?
eG Enterprise prescribes an agentless approach to monitoring the VMware Unified Access Gateway. You can deploy an eG agent on any remote Windows/Linux host in the environment and configure that agent to remotely communicate with and pull metrics from the target gateway appliance. To collect metrics from a gateway appliance, the eG agent makes an HTTP/S connection to the appliance and runs REST API commands on it.
By default, the eG agent collects metrics for the Horizon UAG Sessions test from the esmanager.log available in the <Gateway_Install_Directory> /vmware/gateway/logs folder. To collect the required metrics, ensure that you choose DEBUG option from the Log Level Settings drop-down list that is available in the Support Settings page of the UAG console.
Figure 1 : Choosing the DEBUG option