Apache Tomcat is one of the most popular and powerful web application servers on Linux. You can use Tomcat to host Java servlets or JSP web applications. As with any other Apache-licensed software, Tomcat is available free of charge under liberal Apache license. If you would like to install Apache Tomcat on CentOS, here is a guide for you.
First, you need to install Java Development Kit (JDK). To do that, set up Repoforge repository on your CentOS system, and then run the following.
Then, set up JAVA_HOME environment variable.
$ source /etc/profile.d/java.sh
Now download Apache Tomcat, and install it. Since Apache Tomcat is distributed as binaries, all you have to do is to copy it somewhere in your CentOS.
$ sudo tar xvzf apache-tomcat-7.0.35.tar.gz -C /opt
$ sudo chmod +r /opt/apache-tomcat-7.0.35/conf/*
Then set up a necessary environment variable as follows.
$ source /etc/profile.d/tomcat.sh
Finally, activate Tomcat by running the following startup script.
Go to http://your_centos_ip:8080 in your browser to test if Apache Tomcat is running okay. If it is, you will see the following in your browser window.
If you cannot access the above Tomcat page, make sure to stop iptables, since CentOS has iptables on by default, and it is set to block the Tomcat's default listening port 8080.
$ sudo chkconfig iptables off
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