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Table Of Contents
One DEM Orchestrator instance is designated as the active Orchestrator that performs these tasks.
Because the DEM Orchestrator is essential to run workflows, install at least one additional Orchestrator
instance on a separate machine for redundancy. The Orchestrator is automatically installed on the
machine that also runs the Manager Service. The additional DEM Orchestrator monitors the status of the
active Orchestrator so that it can take over if the active Orchestrator goes offline.
vRealize Automation Agents
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.
Integration Agents
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.
Management Agent
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.
n
Typically requires administrator-level access to the virtualization platform it manages
n
Communicates with the Manager Service
n
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.
Installation and Configuration
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