1. A system to configure monitoring of a virtual machine, the system comprising: a service analyzer to: identify a first virtual machine in a first application definition, the first application definition identifying virtual machines included in a first application, the first virtual machine currently running in the first application; detect a second virtual machine currently running in the first application, the second virtual machine not included in the first application definition; a virtual machine analyzers to: generate a second application definition, the second application definition created by adding the second virtual machine to the first application definition; and store the second application definition in an application configuration database; an agent installer to: automatically install an agent on the second virtual machine when the second virtual machine is identified as having a designated configuration; and update a status of the agent of the second virtual machine to indicate that the installed agent is running; and an agent monitor to: apply a monitoring policy to the second virtual machine, the monitoring policy to be executed by the agent based on a resource automatically identified by the agent of the second virtual machine, at least one of the service analyzer, the virtual machine analyzer, the agent installer and the agent monitor implemented by a logic circuit.