How to redirect requests from apache2 to tomcat7 on Amazon EC2 Ubuntu12.04 when installed using apt-get command - amazon-ec2

Question

I installed Apache2 and Tomcat7 on Amazon EC2 Ubuntu12.04 using command:
sudo apt-get install apache2
sudo apt-get install tomcat7
Now for tomcat
CATALINA_HOME is /usr/share/tomcat7 (bin and lib folders of tomcat)
CATALINA_BASE is /var/lib/tomcat7 (webapps folder is in there)
For Apache
Apache modules : /etc/apache2/mods-enabled
virtual hosts : /etc/apache2/sites-enabled
configuration file : /etc/apache2/apache2.conf
Apache configuration file httpd.conf is empty.
How can I redirect all request from Apache2 to Tomcat7?
Means for Example if I enter 10.121.143.116:80 in browser, it will hit 10.121.143.116:8080
Kindly suggest as I am finding on google since last 2 months and found too many solutions all mix up and not able to understand single best working solution.

Answer 1

Hope this will help.
First, create sampleweb file in /etc/apache2/sites-available
sudo touch /etc/apache2/sites-available/proxy_your_sampleweb
Second, add the following in above sampleweb host file.
sudo vi /etc/apache2/sites-available/proxy_your_sampleweb
#For forwarding everything
<Proxy *>
Order deny,allow
Allow from all
</Proxy>
ProxyRequests Off
ProxyPreserveHost On
ProxyPass / http://localhost:8080/
ProxyPassReverse / http://localhost:8080/
Third, enable sampleweb site
sudo a2ensite proxy_your_sampleweb
Forth, reload apache2 configuration
sudo service apache2 reload
Fifth, access your tomcat app using 80 port.
http://<>/
if you want to redirect only specific context like sampleweb, you can customise the above to limit only your sampleweb request to tomcat.
sudo vi /etc/apache2/sites-available/proxy_your_sampleweb
#For forwarding only required contexts
ProxyRequests Off
ProxyPass /sampleweb http://localhost:8080/sampleweb
ProxyPassReverse /sampleweb http://localhost:8080/sampleweb