How to install Tomcat

Two ways of installing tomcat

• Using apt package manager in ubuntu machine
• Using Docker container

Install Tomcat 9 using apt in ubuntu 20.04

Update the packages using apt

sudo apt update

Install Tomcat 9

sudo apt install tomcat9 tomcat9-admin

Check the status of tomcat installation

sudo systemctl status tomcat9

Enable the tomcat to start automatically after reboot

sudo systemctl enable tomcat9

To access the apache tomcat webserver in browser

Open the browser and type the ipaddress and port number to access the Tomcat application http://<ip-address>:8080 By default tomcat starts in port 8080.

All the configuration files for tomcat9 are located in /var/lib/tomcat9 folder

[Optional] To change the port number, goto the /var/lib/tomcat9/conf/ open server.xml file

sudo vi server.xml

Update the port number to whatever port number you want. I am updating the port number to 9000

Update the port number to 9000 in connector block port feild in server.xml

Restart the tomcat to take effect.

sudo systemctl restart tomcat9

Now access the Tomcat webserver in 9000 port from browser. eg: http://your-ip-address:9000

Install Tomcat 9 as docker container

This will create Tomcat 9 docker container in the background and map the port 8080 to the host and create tomcat9-volume volume to persist the data in the /usr folder from the container.

docker run --name tomcat9 -d --restart=always -p 8080:8080 -v tomcat9-volume:/usr tomcat:9.0