5.5.1

Table Of Contents
Access Rights to Orchestrator Server
The type of vCenter Server license you apply in the Orchestrator configuration interface determines whether
you get read-only or full access to the Orchestrator server capabilities.
Table 64. Orchestrator Server Modes
vCenter Server License Edition vCenter Orchestrator Mode Description
Standard Server You are granted full read and write
privileges to all Orchestrator elements.
You can run and edit workflows.
Foundation Player You are granted read privileges on all
Orchestrator elements. You can run
workflows but you cannot edit them.
Essentials Player You are granted read privileges on all
Orchestrator elements. You can run
workflows but you cannot edit them.
Evaluation Server You are granted full read and write
privileges to all Orchestrator elements.
You can run and edit workflows.
NOTE All predefined workflows are locked as read-only by design. To edit a standard workflow, you must
duplicate the workflow and make changes to the duplicated workflow.
Selecting the Orchestrator Server Mode
By default, the Orchestrator server runs as a single instance in standalone mode. To increase the availability
of the Orchestrator services, you can set up the Orchestrator server to work in cluster mode and start
multiple Orchestrator server instances in a cluster with a shared database.
Orchestrator supports two server modes.
Standalone mode
The Orchestrator server runs as a standalone instance.
Cluster mode
Multiple Orchestrator server instances with identical server and plug-ins'
configurations work together in a cluster and share one database. Only the
active Orchestrator server instances respond to client requests and run
workflows.
All Orchestrator server instances communicate with each other by
exchanging heartbeats at a certain time interval. If an active Orchestrator
server instance fails to send heartbeats, it is considered as non-responsive
and one of the inactive instances takes control to resume all of the workflows
from the point they are interrupted.
IMPORTANT In cluster mode, when more than one Orchestrator server is active, the use of the Orchestrator
client is not supported. If you have more than one active Orchestrator node in a cluster, when different users
use the different Orchestrator nodes to modify one and the same resource, concurrency problems occur. To
have more than one active Orchestrator server node in a cluster, you must develop the workflows that you
need when Orchestrator is in standalone mode, and after that set up Orchestrator to work in cluster mode.
Chapter 6 Configuring the Orchestrator Server
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