GeekTechStuff

Previously I have looked at Flask (Python) and Django (Python) web servers running on the Raspberry Pi. Today I am going to look at Apache Tomcat, a web server which is more geared towards running Java based applications.

I’m currently looking at Java and so will be using the JDK on my Raspberry Pi. For this install I am using a Raspberry Pi 3 and Raspbian Stretch.

Install Java Development Kit (JDK)

• sudo apt-get update
• sudo apt-get install default-jdk
• java -version
• sudo nano /etc/environment

Install Apache Tomcat

• https://tomcat.apache.org/whichversion.html
• sudo apt-get install tomcat8
• Open a web browser and navigate to the your Raspberry Pis IP address with :8080 on the end, if you need to find the ip address open terminal and type ifconfig. The :8080 is to tell the browser to connect to the port 8080

Installing a webapp (Jenkins in this example)

Java webapps come in .war format. For this example I’m using Jenkins (https://jenkins.io/download/).

• Download the .war file from https://jenkins.io/download/
• Copy the file from the download location to /var/lib/tomcat8/webapps e.g. sudo cp /home/pi/Downloads/jenkins.war /var/lib/tomcat8/webapps/
• Open a browser to the Raspberry Pi IP address, port 8080 (:8080), /jenkins/
• Jenkins requires a key (the initial page says where the secrets file is) and then it is ready to configure