View source for JBoss 5.1 - Chapter 04 - Web Application Deployment


{{Cat|JBoss AS 5.1}}

<slideshow style="nobleprog" headingmark="⌘" incmark="…" scaled="true" font="Trebuchet MS" >
;Title: Web Application Deployment
;Author: Bernard Szlachta (NobleProg Ltd)
</slideshow>
== Configuring Load Balancer with Apache ⌘==
=== Installing Apache Server ⌘===
 Install Apache server
 yum install httpd

=== Installing mod_jk ⌘===
There are two ways of installing the mod_jk
# Via RPM
# zip

For more information: https://access.redhat.com/site/documentation/en-US/JBoss_Enterprise_Web_Server/1.0/pdf/Installation_Guide/JBoss_Enterprise_Web_Server-1.0-Installation_Guide-en-US.pdf

== mod_jk configuration ⌘==
in conf.d create ''mod_jk.conf''
 LoadModule jk_module modules/mod_jk.so
 JkWorkersFile conf/workers.properties
 
 JkLogFile logs/mod_jk.log
 JkLogLevel info
 JkLogStampFormat  "[%a %b %d %H:%M:%S %Y]"
 
 # JkOptions indicates to send SSK KEY SIZE
 JkOptions +ForwardKeySize +ForwardURICompat -ForwardDirectories
 
 # JkRequestLogFormat
 JkRequestLogFormat "%w %V %T"
 
 # Mount your applications
 JkMount /* loadbalancer
 #JkMount /xplanner-plus/* loadbalancer
 
 # External file will be checked for updates each 60 seconds.
 # The format of the file is: /url=worker
 # /examples/*=loadbalancer
 #JkMountFile conf/uriworkermap.properties
 
 # Add shared memory.
 JkShmFile logs/jk.shm
 
 # Add jkstatus for managing runtime data
 <Location /jkstatus/>
    JkMount status
 #    Order deny,allow
 #    Deny from all
 #    Allow from 127.0.0.1
 </Location>
 
 
 #LoadModule mod_rewrite_module modules/mod_rewrite.so
 #
 #Listen 80
 #NameVirtualHost *:80 
 
 #<VirtualHost *:80>
 #     ServerName xplanner.nobleprog.com
 #    RewriteEngine on
 #    RewriteLog logs/apache-mod_rewrite
 #    RewriteRule ^/(.*)$ /xplanner-plus/$1 [L,PT]
 #    JkMount  /* loadbalancer
 #</VirtualHost>


We need configuration of workers as well. In the config above, we declared that it will be stored in conf/workers/properties file.

 # Define list of workers that will be used
 # for mapping requests
 worker.list=loadbalancer,status
 
 # Define Node1
 # modify the host as your host IP or DNS name.
 worker.node1.port=8009
 worker.node1.host=localhost
 worker.node1.type=ajp13
 worker.node1.lbfactor=1
 worker.node1.cachesize=10
 
 # Define Node2
 # modify the host as your host IP or DNS name.
 #worker.node2.port=8009
 #worker.node2.host= node2.mydomain.com
 #worker.node2.type=ajp13
 #worker.node2.lbfactor=1
 #worker.node2.cachesize=10
 
 # Load-balancing behaviour
 worker.loadbalancer.type=lb
 
 #worker.loadbalancer.balance_workers=node1,node2
 worker.loadbalancer.balance_workers=node1
 
 worker.loadbalancer.sticky_session=1
 #worker.list=loadbalancer
 
 # Status worker for managing load balancer
 worker.status.type=status

== Configuring Jboss ⌘==
In ''server/default/deploy/jbossweb.sar/server.xml'' add following name of the node:
 <Engine name="jboss.web" defaultHost="localhost" '''jvmRoute="node1"'''>

More Information:
https://access.redhat.com/site/documentation/en-US/JBoss_Enterprise_Web_Server/1.0/pdf/HTTP_Connectors_Load_Balancing_Guide/JBoss_Enterprise_Web_Server-1.0-HTTP_Connectors_Load_Balancing_Guide-en-US.pdf