Spring Boot Actuator with Prometheus and Grafana for Cloud Monitoring

Introduction

Spring Boot Actuator exposes app metrics. When paired with Prometheus and Grafana, you get full observability.

Architecture

Monitoring Stack

Setup

1. Add dependencies:

xmlCopy
<dependency>
  <groupId>org.springframework.boot</groupId>
  <artifactId>spring-boot-starter-actuator</artifactId>
</dependency>
<dependency>
  <groupId>io.micrometer</groupId>
  <artifactId>micrometer-registry-prometheus</artifactId>
</dependency>

2. application.yml

yamlCopy
management:
  endpoints:
    web:
      exposure:
        include: "*"
  metrics:
    export:
      prometheus:
        enabled: true

3. Prometheus config:

yamlCopy
scrape_configs:
  - job_name: 'spring'
    metrics_path: '/actuator/prometheus'
    static_configs:
      - targets: ['host.docker.internal:8080']

Dashboard Example

Grafana Sample

Conclusion

You now have real-time app metrics ready for visualization!