Cluster Nodes
UDMG supports High Availability (HA) deployments through clustering, allowing multiple UDMG Server instances (Cluster Nodes) to operate in a coordinated configuration. Clustering improves system reliability, ensures continuity of service during failures, and enables seamless maintenance windows.
What Are Cluster Nodes?
A Cluster Node is an instance of the UDMG Server that participates in a cluster. Clustering relies on NATS for inter-node communication to maintain availability across the deployment.
Cluster Nodes must share access to the same UDMG Database.
For more context, refer to High Availability.
Monitoring Cluster Nodes
System Administrators can monitor Cluster Nodes in the UDMG Admin UI.
To view Cluster Nodes, click Global > Cluster Nodes in the sidebar.
Metadata
This table describes the fields shown on the Cluster Nodes table.
| Name | Description |
|---|---|
| Node ID | Universally Unique Identifier of this Node. |
| Hostname | Hostname of this Node. |
| IP Address | IP Address of this Node. |
| Port | Port of this Node. |
| Status | Current status of this Node. |
| Preferred | Specifies whether this is the active Node. Currently, all Nodes are marked False. |
| Started | Date and time this Node started. |
| Last Update | Date and time this Node was last updated. This includes the time of the last heartbeat. |