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You can install additional DEM instances for redundancy and scalability, including multiple instances
on the same machine.
There are specific requirements for the DEM installation that depend on the endpoints you use. See
Distributed Execution Manager Requirements.
Install the Distributed Execution Managers
A system administrator installs at least one DEM Worker and one DEM Orchestrator. The installation
procedure is the same for both roles.
DEM Orchestrators support active-active high availability. Typically, you install a single DEM Orchestrator
on each Manager Service machine. You can install DEM Orchestrators and DEM workers on the same
machine.
Prerequisites
Download the IaaS Installer.
Procedure
1 Right-click the [e-mail] setup file and select Run as
administrator.
2 Click Next.
3 Accept the license agreement and click Next.
4 On the Log in page, supply administrator credentials for the vRealize Automation appliance and verify
the SSL Certificate.
a Type the user name, which is root, and the password.
The password is the password that you specified when you deployed the vRealize Automation
appliance.
b Select Accept Certificate.
c Click View Certificate.
Compare the certificate thumbprint with the thumbprint set for the vRealize Automation appliance.
You can view the vRealize Automation appliance certificate in the client browser when the
management console is accessed on port 5480.
5 Click Next.
6 Select Custom Install on the Installation Type page.
7 Select Distributed Execution Managers under Component Selection on the Installation Type page.
8 Accept the root install location or click Change and select an installation path.
9 Click Next.
10 Check prerequisites and click Next.
Installing vRealize Automation
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