Prometheus and Grafana integration concept in Spring Boot - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to add Prometheus metrics endpoint in Spring Boot.

Spring Boot

@Bean
public [1] prometheusMeterRegistry() {
    return new PrometheusMeterRegistry(PrometheusConfig.DEFAULT);
}

Drag options to blanks, or click blank then click option'

APrometheusMeterRegistry

BMeterRegistry

CMetricsEndpoint

DCollectorRegistry

Attempts:

3 left

💡 Hint

Common Mistakes

Using a generic MeterRegistry instead of PrometheusMeterRegistry

Confusing CollectorRegistry with MeterRegistry

The PrometheusMeterRegistry bean exposes metrics in Prometheus format for scraping.

2fill in blank

medium

Complete the configuration property to enable Prometheus endpoint in Spring Boot.

Spring Boot

management.endpoints.web.exposure.include=[1]

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Ahealth

Bmetrics

Cprometheus

Dinfo

Attempts:

3 left

💡 Hint

Common Mistakes

Exposing only 'metrics' does not expose Prometheus endpoint

Using 'health' or 'info' which are unrelated endpoints

Setting management.endpoints.web.exposure.include=prometheus exposes the Prometheus metrics endpoint.

3fill in blank

hard

Fix the error in Prometheus scrape configuration for Spring Boot app in prometheus.yml.

Spring Boot

- job_name: 'springboot-app'
  static_configs:
    - targets: ['localhost:[1]']

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A8080

B8081

C9091

D9090

Attempts:

3 left

💡 Hint

Common Mistakes

Using 8080 which is the main app port, not management port

Using 9090 which is default Prometheus server port

Spring Boot actuator Prometheus endpoint usually runs on port 8081 when management.server.port is set differently.

4fill in blank

hard

Fill both blanks to configure Grafana datasource for Prometheus.

Spring Boot

apiVersion: 1
datasources:
- name: Prometheus
  type: [1]
  url: http://localhost:[2]

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Aprometheus

B9090

C8080

Dinfluxdb

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'influxdb' as datasource type for Prometheus

Using wrong port like 8080 for Prometheus server

Grafana datasource type for Prometheus is 'prometheus' and default Prometheus server port is 9090.

5fill in blank

hard

Fill all three blanks to create a Prometheus query in Grafana to show HTTP request count by status code.

Spring Boot

sum(rate(http_server_requests_seconds_count[1][5m])) by ([2], [3])

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A{job="springboot-app"}

Bstatus

Cmethod

Dinstance

Attempts:

3 left

💡 Hint

Common Mistakes

Using wrong label names like 'instance' instead of 'method'

Missing curly braces in filter expression

The query filters by job label and groups results by HTTP status and method.