Project: Create server and deploy application on DigitalOcean

Technologies used:

• DigitalOcean
• Linux
• Java
• Gradle

Project Requirements:

• Setup and configure a server on DigitalOcean
• Create and configure a new Linux user on the Droplet (Security best practice)
• Deploy and run Java Gradle application on Droplet

Implementation Steps:

$ ssh -i .ssh/digitalocean root@137.184.120.168

in Droplet

~# apt update
~# apt upgrade
~# apt install openjdk-8-jre-headless

create a user

~# adduser application
~# usermod -aG sudo application
~# su - application
$ mkdir .ssh
$ sudo vim .ssh/authorized_keys

• copy the public ssh key into the newly created authorized_keys file

Locally

gradle build

scp -i /home/<user>/.ssh/digitalocean build/libs/devops-module5-project.jar root@137.184.120.168:/home/application

$ ssh -i .ssh/digitalocean application@137.184.120.168

In Droplet

$ java -jar devops-module5-project.jar &

...
2023-10-11 20:55:35.183  INFO 26741 --- [           main] o.s.b.w.embedded.tomcat.TomcatWebServer  : Tomcat initialized with port(s): 7071 (http)
...

$ ps aux | grep java
$ netstat -lpnt

in Droplet for Nexus