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I decided I wanted two Tomcats running on the same box, one for "live", and one for "dev".

I'm going to put these notes here, for me, so I can do it again if I stuff things up, and for other people. You can cut and paste these commands blindly, or do them one at a time.

I did this on a Ubuntu "Jaunty" server, with 6.0.18-0ubuntu6.1 installed. Your mileage may vary if you have a different distro/version.

Decisions I made:

• I decided to call my dev one tomcat6dev.
• I chose to run it as the same user as the "live" one (tomcat6) - you can use another user if you like.
• I wanted to symlink as much stuff as possible, so that updates would apply to them both

 cd /etc/
 cp tomcat6/ tomcat6dev/ -Rfv
 cd tomcat6dev/

 rm catalina.properties 
 ln -s ../tomcat6/catalina.properties 

 rm context.xml 
 ln -s ../tomcat6/context.xml 

 rm policy.d/ -Rfv
 ln -s ../tomcat6/policy.d/

 rm logging.properties 
 ln -s ../tomcat6/logging.properties 

 rm tomcat-users.xml 
 ln -s ../tomcat6/tomcat-users.xml 

 rm web.xml 
 ln -s ../tomcat6/web.xml 

 vim server.xml

I can't script this bit for you. I changed all the ports from 8xxx to 9xxx.

 cd /etc/init.d/
 cp tomcat6 tomcat6dev
 vim tomcat6dev

Change the "NAME" statement to tomcat6dev

 cd /usr/share/
 mkdir tomcat6dev
 cd tomcat6dev/
 ln -s ../tomcat6/bin
 ln -s ../tomcat6/lib
 mkdir webapps

 cd /var/lib
 mkdir tomcat6dev
 cd tomcat6dev/
 ln -s ../../log/tomcat6dev logs
 ln -s /etc/tomcat6dev conf
 ln -s ../../cache/tomcat6dev work
 mkdir webapps

 cd /var/cache/
 mkdir tomcat6dev
 cd tomcat6
 cd ../../log/
 mkdir tomcat6dev

Now I have to sort out the permissions. I wish I'd used cp -Rafv earlier.

 cd /var/log
 chown tomcat6:adm tomcat6dev
 chmod 750 tomcat6dev

 cd /var/cache/
 chown tomcat6:adm tomcat6dev
 chmod 750 tomcat6dev

 cd /etc/
 vim tomcat6dev/Catalina/localhost/manager.xml
 # Did I change anything here?

 cd /usr/share/
 ln -s tomcat6-admin/ tomcat6dev-admin

 cd /etc/tomcat6dev/Catalina/localhost/
 rm *.xml 
 cd ..
 cd ..
 chgrp tomcat6 Catalina/
 chmod 775 Catalina/
 chmod 775 Catalina/localhost/
 chgrp tomcat6 Catalina/localhost/
 cd /var/
 chgrp tomcat6 lib/tomcat6dev/webapps/
 chmod 775 lib/tomcat6dev/webapps/

Now create a couple of workers, live and dev perhaps, and sort them out.

vim /etc/apache2/workers.properties

And restart apache.

/etc/init.d/apache2 restart

Finally, you get to start your tomcat6dev, and see what happens.

/etc/init.d/tomcat6dev start

Then browse to http://your-ip:9080/manager/html and see what happens.