Configuring and Activating a Cluster

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Last UpdatedMar 14, 2025
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Before a new Cluster can begin operations, you must configure and activate the Cluster. Also, during Cluster operations, you can configure the Cluster to accommodate changes in your setup, for example, you may want to change the Capacity of the Gateways, or change the Manager Gateways.

In order to successfully activate the Cluster, the following conditions must be met:

There are two Managers
All subnet fields were filled (if fails, no other validations are run)
Subnet fields are valid
Both Gateways are fully configured (Cluster IP, CIDR and port). The port defined by <cluster_port> must be open on all Gateways in the Cluster. The Cluster port should be the same for all Gateways in the Cluster.
Passwords of the Gateways (for Agent communication) match
Each Gateway has an Agent listener
In dual network topology, Gateways' Agent listeners are not in the Cluster subnet
Gateways' Agents listeners are in the Agents subnet
Gateways' Cluster IPs are in the Cluster subnet
Gateways' IPs are in the Management subnet
In Single Network Topology, all 3 networks have the same interface
In Dual - Separate Cluster Network topology, Agents and Management networks have the same interface and Cluster network has a different interface
In Dual - Separate Agents Network topology, Cluster and Management networks have the same interface and Agents network has a different interface

To configure and activate a Cluster:

Select Main > Setup > Cluster Management.
In the navigation pane on the left, select the MX server.
In the Gateway Groups tab, check the box next to the new Cluster.
Click Configure. The Configure Cluster dialog appears.
Configure the parameters in accordance with the table below.
Click Save. or Save and Activate. The Cluster is configured and, if you clicked Save and Activate, is activated.

Search:

Parameter Name	Description

Name	The name by which the Cluster is identified. Can be edited. Must be unique.
Redundancy	Check this box to ensure that a Gateway is assigned as Redundant. For more information, see Understanding Cluster High Availability.
Manager 1	The Gateway that has priority to be assigned as the Active Cluster Manager. Select the Gateway you wish to assign as Manager 1.
Manager 2	The Gateway that has secondary priority to be assigned as the Active Cluster Manager. If Manager 1 becomes the Active Cluster Manager, Manager 2 becomes the Backup Cluster Manager. Select the Gateway you wish to assign as Manager 2.
Network Topology	This is defined at Cluster creation. If you want to change this, you must first deactivate the Cluster. For more information, see Deactivating a Cluster. The options are: Single: the management server, Cluster and Agents are on the same subnet. You must define the subnet for this topology. Dual - Separate Cluster Network: The Management Server and Agents are on the same subnet, and the Cluster is on a separate subnet. For this topology, you must define: Cluster subnet Agents/Management subnet Dual - Separate Agents Network: The Management Server and Cluster are on the same subnet, and the Agents are on a separate subnet. For this topology, you must define: Agents subnet Cluster/Management subnet
Capacity Management Mode	The options are: Manual - Limited Capacity: The Cluster limits Agent assignments to a single Gateway based on capacity limitations. Enter a value for the Manual Mode Overload Threshold. The Cluster cannot assign to a Gateway a number of Agents with a greater total load than this value. Agents for which no capacity can be found are unassigned. The user can control Gateway load by moving Agents. Manual - Unlimited Capacity: The user configures Gateway load by moving Agents and the Cluster will not limit Agent assignments to Gateways. Automatic: The Cluster automatically moves Agents among the Gateways in order to relieve overload. This is known as Automatic Load Balancing. You cannot manually move Agents inside a Cluster configured as Automatic. For more information, see Unlimited Capacity and Automatic Capacity Management.

Note: You cannot activate a Cluster unless there are two Gateways running, assigned as Manager 1 and Manager 2.

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