Howto Install Tomcat on Linux ?

# Download and Install JAVA

Download j2sdk-<version> from Sun Download center http://developers.sun.com/downloads/# chmod +x j2sdk-1_4_2_09-linux-i586.bin# ./j2sdk-1_4_2_09-linux-i586.binNow set java home path# vi .bash_profileJAVA_HOME=/usr/local/j2sdkNow Check if Java is installed on the server using command java -version[root@map ~]# java -versionjava 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 TomcatNow Download Tomcat from Apache Website and extract ithttp://tomcat.apache.org/download-55.cgi# cd /usr/local/#wget http://www.poolsaboveground.com/apache/tomcat/tomcat-6/v6.0.18/bin/apache-tomcat-6.0.18.tar.gz# tar -zxvf apache-tomcat-6.0.18.tar.gzCreate 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 ..Now set Cataline home path# vi .bash_profileCATALINA_HOME=/usr/loca/tomcatJAVA=/usr/loca/j2sdk/binSave and exit

# Type following commands# export JAVA_HOME=/usr/local/j2sdk# export JAVA=/usr/local/j2sdk/bin# export CATALINA=/usr/local/tomcat# Start TomcatUse Following script to start Tomcat Service on the Server# /usr/local/apache/tomcat/bin/startup.sh# Running Tomcat as non root userDue 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 -R tomcat.tomcat /usr/local/apache-tomcat-6.0.18Now 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 installationopen 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 Tomcat page than Tomcat has been installed properly on the Server.# Creating Script to start, stop and restart TomcatThe 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 variablesexport CATALINA_HOME=”/usr/local/tomcat”if [ ! -f $CATALINA_HOME/bin/catalina.sh ]thenecho “Tomcat not available…”exitfistart() {echo -n -e ‘\E[0;0m'"\033[1;32mStarting Tomcat: \033[0m \n"su -l tomcat -c $CATALINA_HOME/bin/startup.shechotouch /var/lock/subsys/tomcatdsleep 3}stop() {echo -n -e '\E[0;0m'"\033[1;31mShutting down Tomcat: \033[m \n"su -l tomcat -c $CATALINA_HOME/bin/shutdown.shrm -f /var/lock/subsys/tomcatdecho}status() {ps ax --width=1000 | grep "[o]rg.apache.catalina.startup.Bootstrap start” | awk ‘{printf $1 ” “}’ | wc | awk ‘{print $2}’ > /tmp/tomcat_process_count.txtread line < /tmp/tomcat_process_count.txtif [ $line -gt 0 ]; thenecho -n “tomcatd ( pid ”ps ax –width=1000 | grep “[o]rg.apache.catalina.startup.Bootstrap start” | awk ‘{printf $1 ” “}’echo -n “) is running…”echoelseecho “Tomcat is stopped”fi}case “$1? instart)start;;stop)stop;;restart)stopsleep 3start;;status)status;;*)echo “Usage: tomcatd {start|stop|restart|status}”exit 1esacNow save and exit from the file. Now assign executable permission to this file# chown 755 /etc/init.d/tomcatEnable it for all the Run-levels# chkconfig –add tomcat# chkconfig tomcat onNow you can restart tomcat service using following commands.# 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 TomcatNow you have successfully installed Tomcat.