Plan the cluster

Overview

A Gateway Hub installation consists of a number of individual servers called nodes. A set of nodes collectively form a cluster. Gateway Hub creates a custom file system across the cluster and all Gateway Hub applications run on this file system.

Using a custom file system provides significant advantages in speed and resiliency. However, this means that the Gateway Hub installation process is complex and you must ensure that all prerequisites are fully met.

The first step in deploying Gateway Hub is planning how many servers are required to form the cluster. This is done based on the work that Gateway Hub is expected to perform and the specifications of the nodes.

To ensure resilience, at least 5 nodes are recommended. At minimum of 3 nodes are required.

To determine whether an individual server is capable of contributing to the cluster, check Hardware requirements and Software requirements. One of the most common reasons for installation failure is the unsuitability of a node in the cluster.

Cluster Requirements

The number of servers required for Gateway Hub will differ considerably based on a number of factors such as server specifications, expected workload, size of your Geneos estate etc. However, you can get a rough measure of the number of servers required for Gateway Hub by entering the number of managed entities in your Geneos estate and adjusting the storage per server in the form below:

Number of managed entities
Storage per server (TB)
Number of servers required
5