Project Architecture

Java Application

For this project you can use the open source pet clinic application (Java Spring Boot)

https://github.com/spring-projects/spring-petclinic

Tools/Services

• DevOps Tools

  • Jenkins
  • Packer
  • Ansible
  • Terraform

• AWS Services

  • Application Load Balancer (L7)
  • Autoscaling Group
  • AWS secrets manager
  • RDS (MySQL)

Project Workflow

• Build Java application
• Use Packer & Ansible to build the AMI With application code
  • configure application logging
  • configure cloudwatch agent with the application log location.
• Use Teraaform to provision the following
  • MySQL RDS instance and store the username and password in AWS secrets manager
  • Provision Application Load Blancer
  • Create a launch template With the Application AMI
  • Provision Autoscaling Group with Launch tempalate that use AMI built by packer and attach it to Loadbalancer.
• Verify application by accessing it using Load Balancer endpoint.
• Verify application logs in Cloudwatch

Java Application

Spring boot Petclinic application

git clone https://github.com/techiescamp/java-spring-petclinic

Starting the application with externalized properties file.

java -jar spring-petclinic.jar --spring.config.location=/path/to/application.properties --spring.profiles.active=mysql

Log Location

/opt/petclinic.log

Change folder persmissions

sudo chown -R petclinic:petclinic /opt
sudo chmod -R u+w /opt

Useful Resources

1. RDS password Rotation With Terraform