vRealize Automation uses agents to integrate with external systems. A Management Agent is installed automatically on each IaaS node that you create. You can install the vSphere agent as part of a minimal installation. You can install additional agents as needed by using the Custom Installer.
Virtual desktop integration (VDI) PowerShell agents allow vRealize Automation to integrate with external virtual desktop systems. Currently, virtual machines that vRealize Automation provisions can be registered with XenDesktop on a Citrix Desktop Delivery Controller (DDC) and their owners can access the XenDesktop Web Interface from vRealize Automation.
External provisioning integration (EPI) PowerShell agents allow vRealize Automation to integrate external systems into the machine provisioning process. For example, integration with Citrix Provisioning Server enables provisioning of machines by on-demand disk streaming, and an EPI agent allows you to run Visual Basic scripts as extra steps during the provisioning process.
VDI and EPI agents require administrator-level access to the external systems with which they interact.
The Management Agent collects support and telemetry information and registers IaaS nodes. A Management Agent is installed automatically on each IaaS node in your deployment.
Management Agents are not automatically deleted when you uninstall an IaaS component. Uninstall the Management Agent as you would uninstall any Windows service.
Virtualization Proxy Agents
The virtual machines that vRealize Automation manages are created on virtualization hosts. vRealize Automation uses virtualization proxy agents to send commands to and collect data from vSphere ESX Server, XenServer, and Hyper-V virtualization hosts and the virtual machines provisioned on them. A proxy agent has the following characteristics.
Typically requires administrator-level access to the virtualization platform it manages
Communicates with the Manager Service
Is installed separately with its own configuration file
Windows Management Instrumentation Agent
The vRealize Automation Windows Management Instrumentation (WMI) agent enhances your ability to monitor and control system information and allows you to manage remote servers from a central location. It enables the collection of data from Windows machines that vRealize Automation manages.