Clustering Guide

Introduction

JOnAS provides a full solution for clustering that ensures high availability and scalability of J2EE applications.

• At the web level through
  • Apache/mod_jk for equilibrating the HTTP flow between multiple JOnAS/Tomcat instances
  • Tomcat for providing a TCP-based solution and replicating the HTTP session, thus ensuring their high availability
• At the JNDI level through CMI and its replicated registry
• At the EJB level (RMI requests) through CMI and its cluster stub
• At the JMS level through JORAM server and JORAM HA
• At the JDBC level through C_JDBC/Sequoia

The Howto document JOnAS clustering is a guide for configuring the clustering features of JOnAS.

Cluster management is described in Domain and Cluster Management in JOnAS chapter.