Alternative high availability setups

There are two principal alternative setups available for high-availability systems:

• Multi-tenant setup: two Orchestrators instances run on the same node. Each Orchestrator instance has its own access URL and config directory, but they share a database.
• Multiple Orchestrator nodes which operate independently. Tracking issues may be simpler in this case, because each node can run its own dedicated workflows. Note: In a setup with the Federated Workflow plugin, an Orchestrator node can coordinate workflows running on other (multiple, independent) Orchestrator nodes.