How to Configure Two Tomcat instance in Linux

Download Java SE Development Kit. http://java.sun.com/javase/downloads/index.jsp.

# mkdir -p /opt/test
# cd /opt/test
# chmod 755 jdk-6u10-linux-x64.bin
# sh /opt/test/jdk-6u10-linux-x64.bin

# export JAVA_HOME=/opt/test/jdk1.6.0_10/bin
# export PATH=$JAVA_HOME/bin:$PATH

now check java version-
# java -version

Install Tomcat6
Download tomcat6 from the http://tomcat.apache.org/download-60.cgi
extract in /tmp folder.

Download httpd-2.64.tar.gz
now extract in /opt/test directory

Apache compile process-: Compile process we need GCC and lib file must be require
# yum install gcc*
# yum install lib
# cd /test/httpd-2.64
#./configure -prefix=/opt/httpd-2.64
# make
# make install
# cd /opt/test/httpd-2.64
# cd /bin
# apachectl start

Set permanent variable -: In Linux we can set up path

#vim /root/.bashrc
JAVA_HOME=/opt/test/jdk-1.6.0/
export JAVA_HOME
PATH=$JAVA_HOME/bin/;$PATH


We can set new installation JDK java path
#alternative --config Java

Install Tomcat6 and configuration-:

#cp apache-tomcat-6.0.20/opt/test/tomcat-1

Set CATALINA_HOME environment
CATALINA_HOME=/opt/test/tomcat-1

#cd /opt/test/tomcat-1/bin
# sh startup.sh

Configure tomcat2 instance

#cp apache-tomcat-6.0.20/opt/test/tomcat-2

Set CATALINA_HOME environment
CATALINA_HOME=/opt/test/tomcat-2

#cd /opt/test/tomcat-2/bin


Now check first jvm tomcat instance is working or not
http://localhost:8080

Configuring Tomcat Network Ports-:
Since this is the first tomcat that's being created here,the default port numbers can be unchanged in tomcat1
#vim /opt/test/tomcat1/conf/server.xml


connectionTimeout="20000"
redirectPort="8443" />



Second Tomcat we need to be changed
# vim /opt/test/tomcat2/conf/server.xml




connectionTimeout="20000"
redirectPort="8444" />



Install tomcat-connector-1.2.30-src.tar.gz
Unzip directory
tomcat-connector-1.2.30-src

Compile tomcat-connector
# cd /tomcat-connector-1.2.30-src
# cd native
# ./configure -with-apxs=/opt/test/httpd-2.64/bin/apxs
# make
# make install

Now we can find mod_jk.so file will be put on /opt/test/httpd-2.64/modules/

# chmod 755 /opt/test/httpd-2.64/modules/mod_jk.so

Now create workers.properties
# cd /opt/test/httpd-2.64/conf/
# touch workers.properties
Add the following lines

Define list of workers that will be used
# for mapping requests
worker.list=loadbalancer,status

# Define Node1
# modify the host as your host IP or DNS name.
worker.node1.port=8005
worker.node1.type=ajp13
worker.node1.lbfactor=1
worker.node1.cachesize=10

# Define Node2
# modify the host as your host IP or DNS name.
worker.node2.port=8006

worker.node2.type=ajp13
worker.node2.lbfactor=1
worker.node2.cachesize=10

# Load-balancing behavior
worker.loadbalancer.type=lb
worker.loadbalancer.balance_workers=node1,node2
worker.loadbalancer.sticky_session=1
#worker.list=loadbalancer

# Status worker for managing load balancer
worker.status.type=status

Edit httpd.conf file-:
# /opt/test/httpd-2.64/conf/
# vim httpd.conf
LoadModule jk_module modules/mod_jk.so
JkWorkersFile conf/workers.properties
JkMount /* myworker


Start the httpd server
#/bin/apachctl start

start both Tomcat server
#/bin/startup.sh