This project aims to quickly spin up a monitoring setup for a spring-boot application in local environment. It will spin up the following containers:

• cAdvisor (for container metrics)
• Prometheus (for monitoring)
• Grafana (for visualization)
• vector (to collect, transform, and route all your logs and metrics)
• spring-boot app

The spring-boot app includes the following dependencies (and no code modification apart from what comes by default from https://start.spring.io):

• spring-boot-devtools
• spring-boot-configuration-processor
• lombok
• spring-boot-starter-actuator
• micrometer-registry-prometheus
• spring-boot-starter-web

It also has one property defined in application.properties to expose metrics in a format Prometheus understands.

Grafana contains a dashboard which has graphs created for the metrics which are emitted by default from micrometer in the spring-boot app. This will contain metrics related to:

• JVM:
  • Memory: Heap / NonHeap / Buffer <-> Used / Committed / Max
  • GC: Minor / Major GC Pauses with frequency
  • Threads: Thread States, Live, Daemon, Peak Threads
• Log Events - logback level frequencies

---

To start the application, run the following command (replace nerdctl with docker if needed):

./mvnw clean package && nerdctl compose up --build

Different dashboards will be available once the above commands successfully runs:

• Grafana dashboard: http://localhost:3000
• Prometheus dashboard: http://localhost:9090
• cAdvisor dashboard: http://localhost:8090
• vector playground: http://localhost:8686/playground
• spring-boot app: http://localhost:8080