tomcat9.service

[Unit]
Description=Apache Tomcat 9 service

[Service]
# DO NOT CHANGE THESE
ExecStart=/opt/apache-tomcat-9/bin/startup.sh
ExecStop=/opt/apache-tomcat-9/bin/shutdown.sh
Type=forking
Environment="CATALINA_HOME=/opt/apache-tomcat-9

# DO NOT CHANGE THIS HERE, use systemctl edit tomcat9 
# (or what ever you've called your service file if running multiple instances )
Environment="CATALINA_BASE=/usr/local/tomcat/default"

[Install]
WantedBy=multi-user.target