DevOps Classroom Series – 21/Oct/2021

Exercise – Deploying a Spring boot Application

• This activity is about deploying a spring boot application
• The application can be downloaded from Refer Here
• Steps of configuring the machine
  • Install Open jdk 11
  • Download the jar file to some folder on the node /usr/share/spc/spring-petclinic.jar
  • Create a user

  sudo useradd spc
  sudo password spc
  sudo chown spc:spc /usr/share/spc/spring-petclinic.jar
  sudo chmod 500 /usr/share/spc/spring-petclinic.jar
  

  • Create a service file /etc/systemd/system/spc.service

    [Unit]
    Description=Spring petclinic application
    After=network.target
    
    [Service]
    
    User=spc
    ExecStart=/usr/bin/java -jar /usr/share/spc/spring-petclinic.jar SuccessExitStatus=143
    
    [Install]
    WantedBy=multi-user.target
    

  • Application should be accessible on http://publicip:8080
• Exercise:
  • Ensure the manual steps are working
  • Write a playbook to make this spring petclinic application deploy on ubuntu and then centos
  • hint:
    • java installation:
      • ubuntu: sudo apt update && sudo apt install openjdk-11-jdk -y
      • centos: sudo yum install java-11-openjdk-devel -y