Download and Install JAVA

Download j2sdk-1.4.2 from Sun Download center http://developers.sun.com/downloads/ Here I have used j2sdk-1_4_2_18-linux-i586-rpm.bin which will install j2sdk using RPMS and set the Path of JAVA_HOME automatically
#chmod +x j2sdk-1_4_2_09-linux-i586.bin
#./j2sdk-1_4_2_09-linux-i586.bin

Now Check if Java is installed on the server using command java -version

[root@vps907 ~]# java -version

java version “1.6.0_07″
Java(TM) SE Runtime Environment (build 1.6.0_07-b06)
Java HotSpot(TM) Client VM (build 10.0-b23, mixed mode, sharing)

Download Tomcat

Now Download Tomcat from Apache Website and exract it

#cd /usr/local/
#wget http://bluedogfan.com/mirrors/apache/tomcat/tomcat-6/v6.0.18/bin/apache-tomcat-6.0.18.tar.gz
#tar -zxvf apache-tomcat-6.0.18.tar.gz

Create Symlink for the Tomcat Folder

#ln -s /usr/local/apache-tomcat-6.0.18 /usr/local/apache/tomcat

Install Tomcat

#cd apache-tomcat-6.0.18
#cd bin
#tar xvfz jsvc.tar.gz
#cd jsvc-src
#chmod +x configure
#./configure
#make
#cp jsvc ..
#cd ..

Start Tomcat

Use Following script to start Tomcat Service on the Server

#/usr/local/apache/tomcat/bin/startup.sh

Running Tomcat as non root user

Due to security reasons always run tomcat as non-root user i.e. tomcat. To run it as tomcat first you will have to change the ownership of the tomcat folder

#chown tomcat.tomcat /usr/local/apache-tomcat-6.0.18 -R

Now Tomcat can be stopped and started under user tomcat using following commands:

#su -l tomcat -c /usr/local/apache/tomcat/bin/startup.sh
#su -l tomcat -c /usr/local/apache/tomcat/bin/shutdown.sh

Test Tomcat installation
open a browser and browse website http://xx.xx.xx.xx:8080 where xx.xx.xx.xx will be your Server IP and If you get following output than Tomcat has been installed properly on the Server.

Creating Script to start, stop and restart Tomcat

The above installation step will not create tomcat service so that user can restart tomcat using command service tomcat restart. Create a new file in /etc/init.d as tomcat and copy following contenents into it.

#vi /etc/init.d/tomcat

#!/bin/bash
#
# Startup script for Tomcat
#
# chkconfig: 345 84 16
# description: Tomcat jakarta JSP server
#Necessary environment variables
export CATALINA_HOME=”/usr/local/tomcat”
if [ ! -f $CATALINA_HOME/bin/catalina.sh ]
then
echo “Tomcat not available…”
exit
fi

start() {
echo -n -e ‘\E[0;0m'”\033[1;32mStarting Tomcat: \033[0m \n”
su -l tomcat -c $CATALINA_HOME/bin/startup.sh
echo
touch /var/lock/subsys/tomcatd
sleep 3
}

stop() {
echo -n -e ‘\E[0;0m'”\033[1;31mShutting down Tomcat: \033[m \n”
su -l tomcat -c $CATALINA_HOME/bin/shutdown.sh
rm -f /var/lock/subsys/tomcatd
echo
}

status() {
ps ax –width=1000 | grep “[o]rg.apache.catalina.startup.Bootstrap start” | awk ‘{printf $1 ” “}’ | wc | awk ‘{print $2}’ > /tmp/tomcat_process_count.txt
read line < /tmp/tomcat_process_count.txt
if [ $line -gt 0 ]; then
echo -n “tomcatd ( pid ”
ps ax –width=1000 | grep “[o]rg.apache.catalina.startup.Bootstrap start” | awk ‘{printf $1 ” “}’
echo -n “) is running…”
echo
else
echo “Tomcat is stopped”
fi
}

case “$1″ in
start)
start
;;
stop)
stop
;;
restart)
stop
sleep 3
start
;;
status)
status
;;
*)
echo “Usage: tomcatd {start|stop|restart|status}”
exit 1
esac

Save and exit from the file. Now assign executable permission to this file

#chown 755 /etc/init.d/tomcat

Enable it for all the Run-levels

#chkconfig –add tomcat
#chkconfig tomcat on

Now you can restart tomcat service using following commands (you can check the screenshot too)

#service tomcat restart <<< To restart tomcat
#service tomcat stop <<< To stop Tomcat
#service tomcat start <<< To start Tomcat
#service tomcat Status <<< to check the status of Tomcat

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