Apache Tomcat

A servlet container for power web applications

Installation

https://www.digitalocean.com/community/tutorials/how-to-install-apache-tomcat-9-on-debian-10

Get Java

1. sudo apt update
2. sudo apt install default-jdk

Make User

sudo groupadd tomcat sudo useradd -s /bin/false -g tomcat -d /opt/tomcat tomcat

Fetch Tomcat

Version will depend. Go check what the most recent one is here: https://downloads.apache.org/tomcat

1. wget https://downloads.apache.org/tomcat/tomcat-9/v9.0.85/bin/apache-tomcat-9.0.85.tar.gz -P ~
2. sudo mkdir -p /opt/tomcat
3. sudo tar -xzf apache-tomcat-9.0.85.tar.gz -C /opt/tomcat/

Change Perms

1. sudo chown -R tomcat: /opt/tomcat
2. sudo chgrp -R tomcat /opt/tomcat
3. sudo find /opt/tomcat/tomcatapp/bin/ -type f -iname "*.sh" -exec chmod +x {} \;
4. Find the java home path. sudo update-java-alternatives -l
5. sudo nvim /etc/systemd/system/tomcat.service write the following:

[Unit]
Description=Apache Tomcat Web Application Container
After=network.target

[Service]
Type=forking

Environment=JAVA_HOME=/usr/lib/jvm/java-1.17.0-openjdk-amd64
Environment=CATALINA_PID=/opt/tomcat/temp/tomcat.pid
Environment=CATALINA_HOME=/opt/tomcat
Environment=CATALINA_BASE=/opt/tomcat
Environment='CATALINA_OPTS=-Xms512M -Xmx1024M -server -XX:+UseParallelGC'
Environment='JAVA_OPTS=-Djava.awt.headless=true -Djava.security.egd=file:/dev/./urandom'

ExecStart=/opt/tomcat/bin/startup.sh
ExecStop=/opt/tomcat/bin/shutdown.sh

User=tomcat
Group=tomcat
UMask=0007
RestartSec=10
Restart=always

[Install]
WantedBy=multi-user.target

Run Tomcat

1. sudo systemctl daemon-reload
2. sudo systemctl enable --now tomcat

Firewall Policy

if you have ufw sudo ufw allow 8080/tcp

Open Tomcat

You can open tomcat with http://the_server_ip:8080