Deploying Jenkins in CentOS

1. Download the software to "/usr/src" and Install Java JDK - jdk-6u30-linux-i586.rpm

    $ rpm -ivh jdk-6u30-linux-i586.rpm

2. Download the software to "/usr/src" and Install Apache Tomcat

    $ cd /usr/src
    $ tar -xzvf apache-tomcat-6.0.35.tar.gz
    $ mv apache-tomcat-6.0.35 tomcat

3. Download the software to "/usr/src" and Install grails-1.3.7.zip

    $ cd /usr/src
    $ unzip grails-1.3.7.zip

4. Edit "/etc/profile" and add the path below

    $ nano /etc/profile

    JAVA_HOME=/usr/java/jdk1.6.0_30
    export JAVA_HOME
    PATH=$JAVA_HOME/bin:$PATH
    export PATH

    TOMCAT_HOME=/usr/src/tomcat
    export TOMCAT_HOME
    PATH=$TOMCAT_HOME/bin:$PATH
    export PATH

    CATALINA_HOME=/usr/src/tomcat
    export CATALINA_HOME
    PATH=$CATALINA_HOME/bin:$PATH
    export PATH

    GRAILS_HOME=/usr/src/grails-1.3.7
    export GRAILS_HOME
    PATH=$GRAILS_HOME/bin:$PATH
    export PATH

To maximized java memory utiliztion, add the lines below in the "catalina.sh" file

Note. on 32bit Java (3gig is the max), on 64bit

    $ nano /usr/src/tomcat/bin/catalina.sh

    JAVA_OPTS="-Djava.awt.headless=true -Dfile.encoding=UTF-8 -server -Xms2560m -Xmx2560m -XX:NewSize=1024m -XX:MaxNewSize=1024m -XX:PermSize=1024m -XX:MaxPermSize=1024m -XX:+DisableExplicitGC"

5. Create a Tomcat User

    $ cd /usr/src/tomcat/conf
    $ nano tomcat-users.xml

    Add the lines below under

<tomcat-users>
<role rolename="tomcat"/>
<role rolename="role1"/>
<role rolename="manager"/>
<user username="tomcat" password="tomcat" roles="tomcat"/>
<user username="role1" password="tomcat" roles="role1"/>
<user username="both" password="tomcat" roles="tomcat,role1"/>
<user username="manager" password="manager" roles="manager"/>
</tomcat-users>

6. Download Jenkins .war file.

   http://mirrors.jenkins-ci.org/war/latest/jenkins.war

7. Login to the server's webui, eg http://localhost:8080 and click Tomcat Manager


8. Under file to deploy, browse the downloaded jenkins.war, and click deploy.

Thant's it. . .