Passa ai contenuti principali

Yum install tomcat on Linux

This tutorial shows how to perform a Tomcat 7 installation using the yum installation utility.
The pre-requisite for installing Tomcat is that you have a JDK on your machine, if you haven't got one, you can install it by executing as root user:
[root@localhost ~]#  yum install java
Next you can start installing Tomcat. There are at least two ways for installing it:

Installation option 1:

Move to http://tomcat.apache.org/ and download the latest stable release of Tomcat. Once done, unzip it to a folder where you have writing permissions:
[tomcat@localhost ~] $ unzip apache-tomcat-7.0.53.zip

Once installed, you can start Tomcat by executing from the TOMCAT_HOME/bin folder:
[tomcat@localhost ~] $ startup.sh

Installation option 2:

You can use the yum utility for installing Tomcat. At the time of writing, just Tomcat 6 is available on the yum repository. You can install it by running:
[root@localhost ~]# yum install tomcat6 tomcat6-webapps tomcat6-admin-webapps

The tomcat6-webapps is not mandatory as it contains some sample applications. The tomcat6-admin-webapps should be installed as it contains the administration application which is deployed as a web application. 
Once installed, you can include it as a service which starts at boot and start it:

[root@localhost ~]#  chkconfig tomcat6 on
[root@localhost ~]#  service tomcat6 start

Checking that Tomcat is running

The simplest way to check that Tomcat is running is by surfing to the address http://localhost:8080 which should show the welcome page:
If you are going to check it by shell, you can use the following methods to check that Tomcat is running:
[tomcat@localhost ~] service tomcat6 status
tomcat6 (pid 4470) is running...                           [  OK  ]

[tomcat@localhost ~] netstat -nlp | grep 8080
tcp        0      0 :::8080                     :::*                        LISTEN      4470/java           

[tomcat@localhost ~] ps -ef | grep tomcat
tomcat   1937     1  1 11:04 ?        00:00:08 /usr/lib/jvm/jre/bin/java
                                                       . . . . . . .

Where has yum installed Tomcat ?

If you have used yum to install Tomcat, the following defaults have been user for Tomcat installation:
Tomcat Service Config: /etc/tomcat6 (main config directory)
Release Notes        : /usr/share/doc/tomcat*
Bin Directory        : /usr/share/tomcat6
Webapps              : /var/lib/tomcat6/webapps
Logs                 : /var/log/tomcat6 


Etichette:

Commenti

Posta un commento

Post popolari in questo blog

Tomcat maxThreads configuration

Tomcat maxThreads represents the maximum number of request processing threads to be created by the HTTPConnector. < Connector port= " 8443 " protocol= " org.apache.coyote.http11.Http11Protocol " maxThreads= " 250 " SSLEnabled= " true " scheme= " https " secure= " true " clientAuth= " false " sslProtocol= " TLS " connectiontimeout= " 20000 " /> This determines the maximum number of simultaneous requests that can be handled. If not specified, this attribute is set to the default value of 200. How the process works: At server startup, the HTTP Connector will create a number of processing threads based on the value configured for the minSpareThreads attribute. Each incoming request requires a thread for the duration of that request. If the number of simultaneous requests cannot be handled by the currently available request processing threads, additio...
Posta un commento
More:

Tomcat Websocket example

A WebSocket is a full-duplex communication mechanism that allows both textual and binary messages to be sent between clients and servers, without the HTTP request/response life cycle. WebSockets allow either the client or the server to send a message at any time, providing an asynchronous solution for working with data while the user is performing a task. Websockets API are included in Tomcat 7 Web server distribution so you don't have to download any extra library: In this tutorial we will show how to create a WebSocket example using Apache Tomcat and Eclipse. Start by creating on Eclipse a new Dynamic project named websocket-example : We will now create a server side class named WebSocketDemo that is going to echo messages from a Javascript client: package com . sample ; import java . io . IOException ; import java . nio . ByteBuffer ; import javax . websocket . OnMessage ; import javax . websocket . Session ; import javax . websocket . server . ServerEndp...
14 commenti
More:

Tomcat session listener example

As part of Servlet 2.3 specification, we can now make use of session creation and destruction events. Our listener object will be called every time a session is created or destroyed by the server. You can use two interfaces as listener for your Session: HttpSessionListener triggers the listener when a new session is created or destroyed HttpSessionBindingListener triggers the listener when an Object is bound/unbound from the Session HttpSessionListener example: package com.sample; import javax.servlet.http.HttpSessionListener; import javax.servlet.http.HttpSessionEvent; public class SessionCounter implements HttpSessionListener { private static int activeSessions = 0; public void sessionCreated(HttpSessionEvent se) { activeSessions++; } public void sessionDestroyed(HttpSessionEvent se) { if(activeSessions > 0) activeSessions--; } public static int getActiveSessions() { return activeSessions; } } As you can see, all you have to do is implementing two meth...
Posta un commento
More: