Chapter 2. Before You Begin

2.1. Comparison: JWS and JWS Image

This topic details the differences between the JBoss Web Server xPaaS images and the regular release of JBoss Web Server, and provides instructions specific to running and configuring the JBoss Web Server xPaaS images. Documentation for other JBoss Web Server functionality not specific to the JBoss Web Server xPaaS images can be found in the JBoss Web Server documentation on the Red Hat Customer Portal.

The location of JWS_HOME/tomcat<version>/ inside a JBoss Web Server xPaaS image is: /opt/webserver/.

A major functionality difference compared to the regular release of JBoss Web Server is that there is no Apache HTTP Server in the OpenShift JBoss Web Server xPaaS images. All load balancing in OpenShift is handled by the OpenShift router, so there is no need for a load-balancing Apache HTTP Server with mod_cluster or mod_jk connectors.

2.2. Version Compatibility and Support

See the xPaaS part of the OpenShift and Atomic Platform Tested Integrations page for details about OpenShift image version compatibility.

2.3. Initial Setup

The instructions in this guide follow on from and assume an OpenShift instance similar to that created in the OpenShift Primer.