====== Install GeoServer on Ubuntu Server ======

=== 1) Install Java 11 runtime: ===

''sudo apt update''

''sudo apt install default-jdk''

Verify Java has been installed by checking its version:

''java -version''

Java is now installed!

=== 2) Install Apache Tomcat ===

''sudo apt install tomcat9 tomcat9-admin''

Enable Tomcat to start at system boot:

''sudo systemctl enable tomcat9''

Start the service with:

''sudo service tomcat9 start''

Confirm the service is running with:

''sudo service tomcat9 status''

If the service is running ok, a line saying //active// will be displayed.

=== 3) Install GeoServer ===

''wget https://sourceforge.net/projects/geoserver/files/GeoServer/2.20.3/geoserver-2.20.3-war.zip''

Stop Tomcat before unzipping the files:

''sudo service tomcat9 stop''

Move the downloaded file to the webapps directory:

''sudo mv geoserver-2.20.3-war.zip /var/lib/tomcat9/webapps''

Navigate to the webapps directory:

''cd /var/lib/tomcat9/webapps''

Unzip the file:

''sudo unzip geoserver-2.20.3-war.zip''

If unzip has not been installed, use:

''sudo apt install unzip''

After installing Tomcat, type:

''sudo nano /etc/tomcat9/tomcat-users.xml''

Add the following three lines to the xml file:

''<role rolename="admin-gui"/>''

''<role rolename="manager-gui"/>''

''<user username="tomcat" password="pass" roles="admin-gui,manager-gui"/>''

Reboot (or simply restart tomcat service):

''sudo reboot''

Geoserver is accessible at: http://192.168.92.20:8080/geoserver (or whatever is your IP/domain)