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3.3.4. Configuring the Environment

Before running JBoss Enterprise Web Server, you can optionally configure environment:

Procedure 3.16. Removing SSL

The SSL support is optional. It is provided by the mod_ssl package and is enabled on package installation. To remove SSL, do the following:
  1. At the shell prompt, become the root user.
  2. Run the respective uninstall command:
    • on Red Hat Enterprise Linux 6 and Red Hat Enterprise Linux 5: 
      # yum remove mod_ssl
    • on Red Hat Enterprise Linux 4: 
      # rpm -e mod_ssl22
Configuring log4j

For tomcat6, the log4j support is provided by the tomcat6-log4j package and is enabled on package installation (refer to Procedure 3.15, “Installing Enterprise Web Server from RPM Packages”). To enable log4j on tomcat5, copy the respective log4j resources from the tomcat6 to the tomcat5 directory (refer to Procedure 3.17, “Adding log4j on tomcat5”)

Procedure 3.17. Adding log4j on tomcat5

  1. Install the tomcat6-log4j RPM package.
  2. From /usr/share/java/tomcat6/, copy:
    • log4j.jar to /usr/share/tomcat5/common/lib and
    • log4j.properties to /usr/share/tomcat5/common/classes.

Procedure 3.18. Removing log4j From Tomcat 6

Follow this procedure to remove log4j from Tomcat 6:
  1. At the shell prompt, become the root user.
  2. Run the respective uninstall command:
    • on Red Hat Enterprise Linux 6 and Red Hat Enterprise Linux 5: 
      # yum remove tomcat6-log4j
    • on Red Hat Enterprise Linux 4: 
      # rpm -e tomcat6-log4j

Procedure 3.19. Removing log4j From Tomcat 5

Follow this procedure to remove log4j from Tomcat 5
  1. Remove the log4j.jar file from the /usr/share/tomcat5/common/lib directory.
  2. Remove the log4j.properties file from the /usr/share/tomcat5/common/classes directory.

Procedure 3.20. Configuring mod_jk

Follow this procedure to configure and enable mod_jk:
  1. Install the template mod_jk configuration file: 
    # cp /usr/share/doc/mod_jk-ap20-*/mod_jk.conf.sample /etc/httpd/conf.d/mod_jk.conf
  2. Install the template workers.properties file: 
    # cp /usr/share/doc/mod_jk-ap20-*/workers.properties.sample /etc/httpd/conf/workers.properties
  3. Add worker mappings to workers.properties. For example: 
    # Mount the Servlet context to the ajp20 worker
/jmx-console=loadbalancer
/jmx-console/*=loadbalancer
/web-console=loadbalancer
/web-console/*=loadbalancer

    Note

    The default configuration is adequate for low-traffic web sites. For optimization information for moderate and high-load web sites, refer to http://kbase.redhat.com/faq/docs/DOC-15836.

Procedure 3.21. Configuring mod_cluster

The mod_cluster load balancer is optional. It is provided by the mod_cluster package and is enabled on package installation.
Follow this procedure to configure the HTTP Server to use mod_cluster as its load balancer:
  1. In the /etc/httpd/conf/httpd.conf file, add the hash (#) sign at the beginning of the following line to disable mod_proxy_balancer.so: 
    LoadModule proxy_balancer_module modules/mod_proxy_balancer.so
    This module is incompatible with the JBoss HTTP Connector.
  2. Configure the server to load the JBoss HTTP Connector modules:
    1. Create the file /etc/httpd/conf.d/JBoss_HTTP.conf.
    2. Add the following lines to the JBoss_HTTP.conf file: 
      LoadModule slotmem_module modules/mod_slotmem.so
LoadModule manager_module modules/mod_manager.so
LoadModule proxy_cluster_module modules/mod_proxy_cluster.so
LoadModule advertise_module modules/mod_advertise.so