Distributed TREX Systems (Multiple Host Installation) 

Purpose

Search and Classification (TREX) consists of a client component and a server component. The server component is based on a flexible architecture that allows a distributed installation. A distributed system has the following advantages:

·        Load distribution

You can distribute the search and indexing load among several hosts.

·        High availability

You can make searching and indexing highly available.

This guide explains how to plan and implement a distributed system. It is aimed at technology consultants.

The guide is structured as follows:

·        Naming Conventions contains information on the naming conventions used in this guide.

·        Required Documentation lists the documentation that you need to implement a distributed system.

·        Fundamentals contains information on the TREX architecture and basic information on distributed systems. You need this information to plan a distributed system. Read this information before you begin to implement your distributed system.

·        Setting Up a Distributed System and Delta Index and Index Replication Configuration describe how to implement a distributed system.

·        Changing a Distributed System describes changes that you can make to your system after the installation.

·        Distributed Preprocessing of Documents describes how to distribute the preprocessing of documents among several hosts. This section is relevant if you want to index documents whose preprocessing takes up a lot of time and system resources. This can be the case if you want to index large PDF files.

·        The appendix contains information on stopping and starting a distributed system. It also contains information on starting the TREX admin tool and changing the queue parameters and the Java client parameters.