Procedure 2.18. Installing JBoss Web Server from RPM Packages

1. Log in to Red Hat Subscription Manager.
2. Click on Systems in the Subscriber Inventory.
3. Subscribe to the JBoss Web Server CDN repositories for your operating system version and architecture:
   • For Red Hat Enterprise Linux 6:
     • jws-3-for-rhel-6-server-rpms
   • For Red Hat Enterprise Linux  7:
     • jws-3-for-rhel-7-server-rpms
4. Run the following command as the root user to install JBoss Web Server:

   # yum groupinstall jws3

   Note

   Although not recommended, instead of using the group install, you can install each of the packages and their dependencies individually.

Procedure 2.19. Installing the Red Hat JBoss Web Server Plus Group of Packages

• To install the JBoss Web Server Plus group of packages, run the following command as the root user:

  # yum groupinstall jws3plus

Procedure 2.20. Removing SSL Support

• At a shell prompt, run the following command as the root user:

  # yum remove mod_ssl24

Procedure 2.21. Configuring mod_jk

1. In /etc/httpd24/conf.d/, create a file named workers.properties.
   This file should contain the available workers (JBoss instances).
2. In /etc/httpd24/conf.d/, create a file named mod_jk.conf.
   This file contains general mod_jk configuration.
3. In /etc/httpd24/conf.d/, create a file named uriworkermap.properties.
   This file contains request mapping rules that map requests to workers.

Procedure 2.22. Configuring Apache HTTP Server to Use mod_cluster

1. In /etc/httpd24/conf.modules.d/00-proxy.conf, ensure that there is a # 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 mod_cluster.
2. Configure the server to load the mod_cluster modules:
   1. Create the file /etc/httpd24/conf.d/mod_cluster.conf.
   2. Add the following lines to mod_cluster.conf:

      LoadModule cluster_slotmem_module modules/mod_cluster_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

Procedure 2.23. Starting Tomcat

1. In a shell prompt as the root user, start the Tomcat service. Replace <VERSION> with the desired Tomcat version (7 or 8):
   • For Red Hat Enterprise Linux 6:

     # service tomcat<VERSION> start

   • For Red Hat Enterprise Linux 7:

     # systemctl start tomcat<VERSION>.service

2. Go to http://localhost:8080 in your web browser to verify that Tomcat is running.

   Note

   The only supported method of starting Tomcat is using the services shown above.

Procedure 2.24. Starting Apache HTTP Server

• In a shell prompt as the root user, start the Apache HTTP Server service:
  • For Red Hat Enterprise Linux 6:

    # service httpd24 start

  • For Red Hat Enterprise Linux 7:

    # systemctl start httpd24.service

Procedure 2.25. Stopping Tomcat

1. In a shell prompt as the root user, stop the Tomcat service. Replace <VERSION> with the desired Tomcat version (7 or 8):
   • For Red Hat Enterprise Linux 6:

     # service tomcat<VERSION> stop

   • For Red Hat Enterprise Linux 7:

     # systemctl stop tomcat<VERSION>.service

2. Go to http://localhost:8080 in your web browser to verify that Tomcat is no longer running.

Procedure 2.26. Stopping Apache HTTP Server

• In a shell prompt as the root user, stop the Apache HTTP Server service:
  • For Red Hat Enterprise Linux 6:

    # service httpd24 stop

  • For Red Hat Enterprise Linux 7:

    # systemctl stop httpd24.service