How to install Tomcat 6 on RHEL 6 or CentOS 6

Here are some steps to install Tomcat 6 on Red Hat 6 (or CentOS 6).

 First we are going to prepare the repository:

yum install yum-priorities
rpm -Uvh http://apt.sw.be/redhat/el6/en/x86_64/rpmforge/RPMS/rpmforge-release-0.5.2-2.el6.rf.x86_64.rpm
rpm -Uvh http://download.fedora.redhat.com/pub/epel/6/x86_64/epel-release-6-5.noarch.rpm
rpm -Uvh http://mirrors.dotsrc.org/jpackage/6.0/generic/free/RPMS/jpackage-utils-5.0.0-7.jpp6.noarch.rpm


Next we will install Java and Tomcat 6:


yum -y install java
yum -y install tomcat6 tomcat6-webapps tomcat6-admin-webapps


Finally we can launch Tomcat 6:


service tomcat6 start


To connect to Tomcat, just browse to port 8080 on the server, for example:


http://127.0.0.1:8080/

Here are a couple of diagnostic commands to test that Tomcat is running:

# service tomcat6 status
tomcat6 (pid 17318) is running... [ OK ]
# netstat -nlp|grep 800
tcp 0 0 0.0.0.0:8009 0.0.0.0:* LISTEN xxxxx/java
tcp 0 0 127.0.0.1:8005 0.0.0.0:* LISTEN xxxxx/java
# netstat -nlp|grep 8080
tcp 0 0 0.0.0.0:8080 0.0.0.0:* LISTEN xxxxx/java


File Structure

The Red Hat file structure is different than the default file structure Tomcat 6 has when installing from source. Here is the file structure that is used when installing with this method:

/etc/tomcat6 (this is where the main tomcat config files reside)
/usr/share/doc/usr/share/tomcat6
/usr/share/tomcat6/bin
/usr/share/tomcat6/conf
/usr/share/tomcat6/lib
/usr/share/tomcat6/logs
/usr/share/tomcat6/temp
/usr/share/tomcat6/webapps
/usr/share/tomcat6/work
/var/cache/tomcat6
/var/cache/tomcat6/temp
/var/cache/tomcat6/work
/var/lib/tomcat6 (this is where you will add and/or change most of your files)
/var/lib/tomcat6/webapps
/var/log/tomcat6


Here is an article that explains how to add support for JConsole debugging and/or monitoring to Tomcat:
https://wiki.internet2.edu/confluence/display/CPD/Monitoring+Tomcat+with+JMX

Source Newpush.

Additional (Use port 80):

# iptables -D INPUT 5
# iptables -t nat -A PREROUTING -p tcp -m tcp --dport 80 -j REDIRECT --to-ports 8080    
# iptables -t nat -A PREROUTING -p udp -m udp --dport 80 -j REDIRECT --to-ports 8080
 

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