spring-boot micrometer prometheus grafana

Monitor spring-boot apps with actuator, micrometer, prometheus and grafana...

build and run system

./mvnw -f docker-compose -P postgres-start
./mvnw -f backend package jib:dockerBuild
./mvnw -f docker-compose -P backend-start,prometheus-start,grafana-start

examine some rest calls (monitoring test data)

curl -sS 0:8080 | jq '.'
http :8080 name=ololo
http :8080 name=trololo
http :8080

grafana

setup

• open http://127.0.0.1:3000/
• login as admin / admin
• set a new password and confirm

configure prometheus datasource

• click on Add data source
• select prometheus
• set URL: http://prometheus:9090
• set Query timeout: 5s
• finally, click button: Save & Test
• verify success: Data source is working
• click Dashboards tab
• create one for http_server_requests_seconds_count query

cleanup

./mvnw -f docker-compose -P down

resources

• YouTube: Kubernetes Master Class: Monitoring and Alerting with Prometheus & Grafana
• https://dzone.com/articles/monitoring-using-spring-boot-20-prometheus-and-gra
• Docker Hub Prometheus
• Spring Boot Actuator Metrics
• R2DBC migrations (require java >= 11 and spring-boot >= 2.3.0.M3)
• R2DBC migrations example
• YouTube: Production-Ready Spring Boot Applications
• https://www.callicoder.com/spring-boot-actuator-metrics-monitoring-dashboard-prometheus-grafana/