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Cluster
Install or upgrade a cluster installation of Spectrum Technology Platform and its applications.
Clustered Architecture
Clustered Architecture for Context Graph

Welcome
Install or upgrade Spectrum Technology Platform2022.1.0 and applications that run on the platform.
Planning Your Installation
Review installation scenarios and system requirements for Spectrum Technology Platform2022.1.0 and applications that run on the platform.
Before You Begin
Perform necessary prerequisites before you install or upgrade Spectrum Technology Platform2022.1.0.
Standard Installation
Install Spectrum Technology Platform2022.1.0 and its applications and repositories on a single machine.
Upgrading your installation
Upgrade a standard installation to Spectrum Technology Platform2022.1.0.
Cluster
Install or upgrade a cluster installation of Spectrum Technology Platform and its applications.
- Clustered Architecture
- Requirements
- Installing a Cluster
  Installing a cluster involves setting up one Spectrum Technology Platform server at a time.
- Installing a Cluster for Spatial
- Installing a Cluster for Context Graph
  This task describes how to configure Neo4j Graph Database Server to store Context Graph models in a cluster configuration.
- Visual Insights not supported on clusters
- Upgrading a Cluster
- Upgrading a Cluster with Spatial
- Upgrading a Cluster with Context Graph
- Removing a Node from a Cluster
- Adding Nodes to a Cluster
- Starting a Cluster
  This procedure describes how to start all Spectrum Technology Platform nodes in a cluster when all nodes are stopped.
- Stopping a Cluster
  This procedure describes how to stop all Spectrum Technology Platform nodes in a cluster.
- Using Enterprise Designer with a Cluster
- Disabling Host Checks in Token Authentication
Cluster with Separated Configuration Database
Install or upgrade Spectrum Technology Platform with the server and its configuration database in separate clusters.
Spectrum Databases
Install reference data from trusted data providers to enhance and validate your data.
Client Tools
Install applications to administer Spectrum Technology Platform2022.1.0 and to design and run data and process flows.
Client API
Install the Client API to integrate Spectrum Technology Platform2022.1.0 functionality into your applications.
SAP
Provide Spectrum Technology Platform2022.1.0 address validation and geocoding functionality within SAP.
Uninstalling Server or Modules
Uninstall Spectrum Technology Platform2022.1.0 or its modules.
Support
Support information for Spectrum Technology Platform2022.1.0.

Clustered Architecture for Context Graph

Context Graph databases are stored on an external Neo4j Graph Database Server. Neo4j supports cluster architectures for high availability, horizontal read scaling, and load balancing. When Neo4j Graph Database Server is configured in a cluster architecture, the Context Graph Repository Configuration settings are configured to connect to the Bolt connector on each Neo4j node in the cluster.

Image of Context Graph Neo4j Graph Database cluster architecture

For information about setting up Neo4j Graph Database Server clusters, refer to the Neo4J Operations Manual.

Neo4j Clustering (Neo4j Operations Manual) Describes configurations and operations of the different Neo4j cluster topologies.
Advanced Causal Clustering (Neo4j Operations Manual) Describes advanced deployments and configuration options for multi-data center operations.

The smallest fault tolerant Neo4j Graph Database Server cluster is a cluster that can tolerate one lost server. This requires a minimum of three Core instances. Both a three-server cluster and a four-server cluster can tolerate a maximum of one lost server. Should a cluster suffer enough Core failures, it can no longer process writes and becomes read-only to preserve database integrity. Neo4j recommends that in order to tolerate two failed Core instances, you need to deploy a cluster of five Core instances.