slok/jboss_apache.md

## jboss_apache.md

      
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              jboss_apache.md
            
          
    Preparing Jboss environment

Create Jboss user and group

Create a group for a system user (daemnos and program users like www-data, mysql...)
# addgroup --system jboss

Create a user (system user, without home -> See below the command, to the jboss group and no login shell)
# useradd -r -M -g jboss -s /bin/false jboss

Maybe we want home to store data from maven, ant... that is needed by the jboss user when executing jenkins stuff
# useradd -r -g jboss -s /bin/false jboss

Add Jboss env var

Add to /etc/environment JBOSS_HOME var
#  echo "JBOSS_HOME=\"/usr/share/jboss7\"" >> /etc/environment

Installation of Jboss

Download Jboss 7 from [jboss donwnload site] (http://www.jboss.org/jbossas/downloads)
Extract jboss in the proper place for example /usr/share
$ cd /usr/share
# tar xvf /home/xxxxx/Downloads/jboss-as-7.X.X.Final.tar.gz
# chown -R jboss:jboss /usr/share/jboss-as-7.X.X.Final/
# ln -s /usr/share/jboss-as-7.X.X.Final /usr/share/jboss7
# chown -h jboss:jboss /usr/share/jboss7

Installation of mod_cluster

Download the libs, [actually mod_cluster 1.1.3] (http://www.jboss.org/mod_cluster/downloads/1-1-3)
Extract the libs
$ cd /home/xxxx/Downloads
$ mkdir ./mod_cluster_libs
$ cd ./mod_cluster_libs
$ tar xvf ./mod_cluster-1.1.3.Final-linux2-XXXX-so.tar.gz

Copy libs (not all, mod_proxy_ajp.so, mod_proxy_http.so and mod_proxy.so NO) to apache modules dir (i.e /usr/lib/apache2/modules/)
# cp ./mod_advertise.so  ./mod_manager.so  ./mod_proxy_cluster.so  ./mod_slotmem.so  /usr/lib/apache2/modules/

Configuration of mod_cluster in Jboss

Configure jboss Standalone mode to enable mod_cluster. Edit the standalone.xml file in $JBOSS_HOME/standalone/configuration/standalone.xml and add this two lines in their sections
Extensions
<extension module="org.jboss.as.modcluster"/>

profile
<subsystem xmlns="urn:jboss:domain:modcluster:1.0" />

Configuration of mod_cluster in apache

Create two files in mods-available (/etc/apache2/mods-available)
mod_cluster.load
LoadModule proxy_module /usr/lib/apache2/modules/mod_proxy.so
LoadModule proxy_http_module /usr/lib/apache2/modules/mod_proxy_http.so
LoadModule proxy_ajp_module /usr/lib/apache2/modules/mod_proxy_ajp.so
LoadModule slotmem_module /usr/lib/apache2/modules/mod_slotmem.so
LoadModule manager_module /usr/lib/apache2/modules/mod_manager.so
LoadModule proxy_cluster_module /usr/lib/apache2/modules/mod_proxy_cluster.so
LoadModule advertise_module /usr/lib/apache2/modules/mod_advertise.so

mod_cluster.conf
CreateBalancers 1

<IfModule manager_module>
    Listen 127.0.0.1:6666
    ManagerBalancerName mycluster
 
    <VirtualHost 127.0.0.1:6666> 
        KeepAliveTimeout 300
        MaxKeepAliveRequests 0
        AdvertiseFrequency 5
        ServerAdvertise On
 
        <Location />
            Order deny,allow
            Allow from 127.0.0
        </Location>

     </VirtualHost>

</IfModule>

And enable the module
# a2enmod mod_cluster

Configuration of jboss (mod_cluster/proxy) in apache

Create a file (virtual host) for jboss in sites-available (/etc/apache2/sites-available)
jboss
NameVirtualHost *:80
<VirtualHost *:80> 
    #ServerAdmin info@domain.de
    ServerName jboss.mdiss.info
    ServerAlias jboss.mdiss.info

    ProxyPass / balancer://mycluster stickysession=JSESSIONID|jsessionid nofailover=On
    ProxyPassReverse / balancer://mycluster
    ProxyPreserveHost On

    <Location />
        Order deny,allow
        Allow from All
    </Location>

   <Location /mod_cluster-manager>
      SetHandler mod_cluster-manager
      Order deny,allow
      #Deny from all
      Allow from 127.0.0
   </Location>

</VirtualHost>

And enable the site
# a2ensite jboss

Fix mod_cluster log problem

There is a problem with mod_cluster  (in ubuntu?), needs the log directory in /etc/apache2
We can do two things, create the dir or create a symbloic link to /var/log/apache2
Creating the dir
# mkdir /etc/apache2/logs

Creating the symbolic link
#ln -s /var/log/apache2 /etc/apache2/logs

Create Jboss daemon

Create a Daemon to start jboss as jboss user, so create aa file (/etc/init.d/jboss) with this content
#!/bin/sh
### BEGIN INIT INFO
# Provides:          jboss
# Required-Start:    $local_fs $remote_fs $network $syslog
# Required-Stop:     $local_fs $remote_fs $network $syslog
# Default-Start:     2 3 4 5
# Default-Stop:      0 1 6
# Short-Description: Start/Stop JBoss AS v7.0.2
### END INIT INFO
#
#source some script files in order to set and export environmental variables
#as well as add the appropriate executables to $PATH
#[ -r /etc/profile.d/java.sh ] && . /etc/profile.d/java.sh
#[ -r /etc/profile.d/jboss.sh ] && . /etc/profile.d/jboss.sh

case "$1" in
    start)
        echo "Starting JBoss AS 7.0.2"
        sudo -u jboss sh ${JBOSS_HOME}/bin/standalone.sh
    ;;
    stop)
        echo "Stopping JBoss AS 7.0.2"
        sudo -u jboss sh ${JBOSS_HOME}/bin/jboss-admin.sh --connect command=:shutdown
    ;;
    *)
        echo "Usage: /etc/init.d/jboss {start|stop}"
        exit 1
    ;;
esac

exit 0

Install Jenkins

Download and deploy jenkins war

We download Jenkins from the [site] (http://mirrors.jenkins-ci.org/war/latest/jenkins.war)
and we deploy the war.
Connect to the jboss admin console
# $JBOSS_HOME/bin/jboss-admin.sh
$ connect
$ deploy /home/xxxx/Downloads/jenkins.war
$ exit

Configure jenkins environmnent

Create the jenkins home (data storage)
# mkdir /usr/share/jenkins
# chown jboss:jboss /usr/share/jenkins

Set env variable in java (the system vars sometimes doesn't work with jboss user  from jboss-as). Edit servers boot conf (standalone, domain). For example for estandalone: Edit $JBOSS_HOME/bin/standalone.conf
Add in the end of the file:
#Set jenkins home env variable
JAVA_OPTS="$JAVA_OPTS -DJENKINS_HOME=/usr/share/jenkins"