TOMCAT Installing & Configuring in Cent OS 5.4

INSTALLING & CONFIGURING TOMCAT IN CENTOS 5.4

Download And Install JDK or J2SDK  on the server

You can download JDK or j2sdk from
http://java.sun.com/

I have downloaded jdk-6u18-linux-i586.bin .

Create a directory ‘java’ directory in /usr

   Mkdir /usr/java

Mv    jdk-6u18-linux-i586.bin /usr/java

Chmod  a+x jdk-6u18-linux-i586.bin

./ jdk-6u18-linux-i586.bin

Press enter for confirmation

It should end with “Done”

export JAVA_HOME=/usr/java/jdk1.6.0_22

export PATH=$JAVA_HOME/bin:$PATH

which java

]#/usr/java/jdk1.6.0_18/bin/java –version ‘or’ java –version

java version "1.6.0_22"

Java(TM) SE Runtime Environment (build 1.6.0_18-b07)

Java HotSpot(TM) Client VM (build 16.0-b13, mixed mode, sharing)

Create a file java.sh in /etc/profile.d directory and add the following

[#Java Environment script

export JAVA_HOME="/usr/java/jdk1.6.0_22"

export JAVA_PATH="$JAVA_HOME"

export PATH="$JAVA_HOME/bin:$PATH"

chmod a+x java.sh

When done, hit

source /etc/profile.d/java.sh 

Now any user root or other wise should be able to use the command;

which java

java -version

[root@localhost ~]#env

Install tomcat on the server:-

Create a group and user account for Tomcat to run

[root@server1 /]#groupadd tomcat

[root@server1 /]#useradd -g tomcat -s /usr/sbin/nologin -m -d /home/tomcat tomcat

Download apache tomcat

[root@server1 /]#tar -zxvf apache-tomcat-6.0.29.tar.gz

[root@server1 /]#mv apache-tomcat-6.0.29 /usr/local/

The directory where Tomcat is installed iscalled CATALINA_HOME.
Here in this case  CATALINA_HOME=/usr/local/apache-tomcat-6.0.24

Create symlink for the tomcat directory:-

[root@server1 /]#cd /usr/local

[root@server1 /]#ln -s apache-tomcat-6.0.29 apache-tomcat

[root@server1 /]#chown -h tomcat.tomcat /usr/local/apache-tomcat

[root@server1 /]#chown -R tomcat.tomcat apache-tomcat-6.0.29

 

 

Check the tomcat version installed.

Execute the following command:-

[root@server1 local]# /usr/local/apache-tomcat-6.0.29/bin/version.sh

Using CATALINA_BASE:   /usr/local/apache-tomcat-6.0.29

Using CATALINA_HOME:   /usr/local/apache-tomcat-6.0.29

Using CATALINA_TMPDIR: /usr/local/apache-tomcat-6.0.29/temp

Using JRE_HOME:        /usr/java/jdk1.6.0_22

Using CLASSPATH:       /usr/local/apache-tomcat-6.0.29/bin/bootstrap.jar

Server version: Apache Tomcat/6.0.29

Server built:   July 19 2010 1458

Server number:  6.0.0.29

OS Name:        Linux

OS Version:     2.6.18-164.el5

Architecture:   i386

JVM Version:    1.6.0_22-b04

JVM Vendor:     Sun Microsystems Inc.

Start the tomcat

[root@server1 local]# /usr/local/apache-tomcat/bin/startup.sh

Check  the url  http://localhost:8080

Stop the tomcat

[root@server1 local]# /usr/local/apache-tomcat/bin/shutdown.sh

Setting Tomcat up as a Service (Optional):

If you want Tomcat to start automatically on boot then you need to set it up as a service. To do this you need to copy the code below and save it as a file called tomcat in the folder /etc/init.d:

CODE:

1. # This is the init script for starting up the

2. #  Jakarta Tomcat server

3. #

4. # chkconfig: 345 91 10

5. # description: Starts and stops the Tomcat daemon.

6. #

7.  

8. # Source function library.

9. . /etc/rc.d/init.d/functions

10.         

11.        # Get config.

12.        . /etc/sysconfig/network

13.         

14.        # Check that networking is up.

15.        [ "${NETWORKING}" = "no" ] && exit 0

16.         

17.        tomcat=/usr/local/tomcat

18.        startup=$tomcat/bin/startup.sh

19.        shutdown=$tomcat/bin/shutdown.sh

20.        export JAVA_HOME=/usr/java/jdk1.5.0_6

21.         

22.        start(){

23.         echo -n $"Starting Tomcat service: "

24.         #daemon -c

25.         $startup

26.         RETVAL=$?

27.         echo

28.        }

29.         

30.        stop(){

31.         action $"Stopping Tomcat service: " $shutdown

32.         RETVAL=$?

33.         echo

34.        }

35.         

36.        restart(){

37.          stop

38.          start

39.        }

40.         

41.         

42.        # See how we were called.

43.        case "$1" in

44.        start)

45.         start

46.         ;;

47.        stop)

48.         stop

49.         ;;

50.        status)

51.              # This doesn't work

52.        status tomcat

53.        ;;

54.        restart)

55.        restart

56.        ;;

57.        *)

58.        echo $"Usage: $0 {start|stop|status|restart}"

59.        exit 1

60.        esac

61.         

62.        exit 0

You may have to change the value for JAVA_HOME if your JDK is in a different location to mine. You then need to make the file executable with the command:

sudo chmod +x /etc/init.d/tomcat

And finally you need to set it to start at boot with the command:

sudo chkconfig --add tomcat

You now have a working Tomcat install that will start itself at boot time. You can also interact with it using the service command to start, stop, restart and see the status of the service at any time. E.g.

sudo service tomcat start

sudo service tomcat satus

sudo service tomcat stop