Create an Agent
An agent is the service that takes care of collecting metrics from your instances and uploads them to our servers in the cloud. Depending on your infrastructure, you will need one or more agents, each in charge of a different set of instances. In general, an agent can collect metrics from any number of instances, as long as it is capable of contacting them, so you usually have one agent per each data center.
You can create, rename or delete agents from the Instances page, with the buttons at the top or next to the name of the agent. Every organization always contains a Default agent, ready to be installed and used. Next to the name of each agent there is a status icon that indicates whether the agent is running or not. Click on the status icon to display additional information about the agent: the name of the host it is running on, the service account and the version of the software.
Before you can add your SQL Server instances to QMonitor, you will have to install and configure at least one agent and then you will be able to register and add your instances to that agent.