YT01‐Installation

1. Install Java on Ubuntu

sudo apt update
sudo apt install openjdk-25-jre-headless
java -version

2. Install Tomcat

sudo apt install tomcat10 tomcat10-admin 
sudo systemctl enable tomcat10
sudo systemctl start tomcat10
sudo systemctl status tomcat10

Tomcat usually listens on port 8080. Open this in browser:

http://YOUR_SERVER_IP:8080

Result

It works !
If you're seeing this page via a web browser, it means you've setup Tomcat successfully. Congratulations!

This is the default Tomcat home page. It can be found on the local filesystem at: /var/lib/tomcat10/webapps/ROOT/index.html

Tomcat veterans might be pleased to learn that this system instance of Tomcat is installed with CATALINA_HOME in /usr/share/tomcat10 and CATALINA_BASE in /var/lib/tomcat10, following the rules from /usr/share/doc/tomcat10-common/RUNNING.txt.gz.

You might consider installing the following packages, if you haven't already done so:

tomcat10-docs: This package installs a web application that allows to browse the Tomcat 10 documentation locally. Once installed, you can access it by clicking here.

tomcat10-examples: This package installs a web application that allows to access the Tomcat 10 Servlet and JSP examples. Once installed, you can access it by clicking here.

tomcat10-admin: This package installs two web applications that can help managing this Tomcat instance. Once installed, you can access the manager webapp and the host-manager webapp.

NOTE: For security reasons, using the manager webapp is restricted to users with role "manager-gui". The host-manager webapp is restricted to users with role "admin-gui". Users are defined in /etc/tomcat10/tomcat-users.xml.