How to Deploy a Spring Boot Application on Linux

How to Deploy a Spring Boot Application on Linux

Spring Boot is a popular Java framework for building production-ready applications. Deploy your Spring Boot JAR on a Breeze with systemd for reliable process management.

Install Java

sudo apt update
sudo apt install -y openjdk-21-jre-headless

java -version

Prepare Your Application

# Upload your built JAR
scp target/myapp-1.0.0.jar user@your-breeze:/opt/myapp/

# Create a dedicated user
sudo useradd -r -s /usr/sbin/nologin springapp
sudo chown -R springapp:springapp /opt/myapp

Create a Systemd Service

# /etc/systemd/system/springboot.service
[Unit]
Description=Spring Boot Application
After=network.target

[Service]
Type=simple
User=springapp
ExecStart=/usr/bin/java -Xms256m -Xmx512m -jar /opt/myapp/myapp-1.0.0.jar --spring.profiles.active=production
Restart=on-failure
RestartSec=10
SuccessExitStatus=143

[Install]
WantedBy=multi-user.target

sudo systemctl daemon-reload
sudo systemctl enable --now springboot
sudo journalctl -u springboot -f

Nginx Reverse Proxy

server {
    listen 80;
    server_name api.yourdomain.com;

    location / {
        proxy_pass http://127.0.0.1:8080;
        proxy_set_header Host $host;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header X-Forwarded-Proto $scheme;
    }
}

Use Certbot for HTTPS. Configure application-production.yml for database connections and secrets management on your Breeze.