7.0
Table Of Contents
- Reference Architecture
- Contents
- vRealize Automation Reference Architecture Guide
- Updated Information
- New Features in vRealize Automation Since Release 6.2
- Initial Deployment and Configuration Recommendations
- vRealize Automation Deployment
- vRealize Business Standard Edition Deployment Considerations
- vRealize Automation Scalability
- vRealize Business Standard Edition Scalability
- vRealize Automation High Availability Configuration Considerations
- vRealize Business Standard Edition High Availability Considerations
- vRealize Automation Hardware Specifications
- vRealize Automation Small Deployment Requirements
- vRealize Automation Medium Deployment Requirements
- vRealize Automation Large Deployment Requirements
Infrastructure Manager Service
The manager service component supports active-passive high availability. To enable high availability for
this component, place two manager services under a load balancer. Because two manager services
cannot be active simultaneously, disable the passive manager service in the cluster and stop the
Windows service.
If the active manager service fails, stop the Windows service, if it is not already stopped under the load
balancer. Enable the passive manager service and restart the Windows service under the load balancer.
See the Installing vRealize Automation 7.0 documentation.
Agents
Agents support active-active high availability. For information about configuring agents for high availability,
see the vRealize Automation configuration documentation. Check the target service for high availability.
Distributed Execution Manager Worker
A Distributed Execution Manager (DEM) running under the Worker role supports active-active high
availability. If a DEM Worker instance fails, the DEM Orchestrator detects the failure and cancels
workflows that the DEM Worker instance is running. When the DEM Worker instance comes back online,
it detects that the DEM Orchestrator has canceled the workflows of the instance and stops running them.
To prevent workflows from being canceled prematurely, leave a DEM Worker instance offline for several
minutes before you cancel its workflows.
Distributed Execution Manager Orchestrator
DEMs running under the Orchestrator role support active-active high availability. When a DEM
Orchestrator starts, it searches for another running DEM Orchestrator.
n
If it finds no DEM Orchestrator instances running, it starts running as the primary DEM Orchestrator.
n
If it does find another running DEM Orchestrator, it monitors the other primary DEM Orchestrator to
detect an outage.
n
If it detects an outage, it takes over as the primary instance.
When the previous primary instance comes online again, it detects that another DEM Orchestrator has
taken over its role as primary and monitors for failure of the primary Orchestrator instance.
vRealize Automation Appliance Database Server
The appliance database is automatically clustered within the vRealize Automation appliance. In the event
of a failure, you must promote a node to be the new master on the Virtual Appliance Management
Console vRA Settings > Database tab.
Reference Architecture
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