In this we will look at installing Apache Tomcat 7 on Ubuntu 14.04 and deplyoying a web application

Install Tomcat with apt-get

This will install the tomcat software and administration tools

sudo apt-get install tomcat7
sudo apt-get install tomcat7-admin

sudo chgrp -R tomcat7 /etc/tomcat7
sudo chmod -R g+w /etc/tomcat7 

#Directory Strcuture

CATALINA_HOME

The tomcat installation directory is referred as CATALINA_HOME and is set to /usr/share/tomcat7 by default

CATALINA_BASE

This tomcat runtime directory and is set to /var/lib/tomcat7 by default web applications can be found here.

webapps can be found in webapps directory

CONFIGURATION

Configuration files can found at /etc/tomcat7

DEFAULT CONFIGURATION

default configuration files for tomcat can be found at /etc/default/tomcat7

COMMANDS

Tomcat service can be checked

sudo service tomcat7 status

Commands for starting and stopping are as follows

sudo service tomcat7 start
sudo service tomcat7 stop

CONFIGURATION

PORT CONFIGURATION

By default Tomcat runs a HTTP connector on port 8080 This ports can be configured by changing the following lines in /etc/tomcat7/server.xml

<Connector port="8090" protocol="HTTP/1.1" 
               connectionTimeout="20000" 
               redirectPort="8443" />

JVM CONFIGURATION

By default Tomcat will run preferably with OpenJDK JVMs, then try the Sun JVMs, then try some other JVMs. You can force Tomcat to use a specific JVM by setting JAVA_HOME in /etc/default/tomcat7:

JAVA_HOME=/usr/lib/jvm/java-6-sun

Declaring users and roles

Usernames, passwords and roles (groups) can be defined centrally in a Servlet container. This is done in the /etc/tomcat7/tomcat-users.xml file:

<role rolename="admin"/>
<user username="tomcat" password="reloded23" roles="admin,manager-gui,host-gui"/>

Larger uploads

Modify /usr/share/tomcat7-admin/manager/WEB-INF/web.xml to handle larger uploads.

    <multipart-config>
      <max-file-size>72428800</max-file-size>
      <max-request-size>72428800</max-request-size>
      <file-size-threshold>0</file-size-threshold>
    </multipart-config>
    

Deploying the Web Application

Tomcat manager GUI can be accessed as follows


http://10.0.0.15:8090/manager/html

you can manager all the webapps from this terminal

References

http://askubuntu.com/questions/135824/what-is-the-tomcat-installation-directory
https://help.ubuntu.com/lts/serverguide/tomcat.html
http://mythinkpond.wordpress.com/2011/07/01/tomcat-6-infamous-severe-error-listenerstart-message-how-to-debug-this-error/

Install Apache Tomcat 7 on Ubuntu 14.04

Install Tomcat with apt-get

COMMANDS

CONFIGURATION

Deploying the Web Application

References

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