JVM (Micrometer)¶

Configuration¶

Description: Enable the prom collector, and collect JVM Metrics information through the prom collector.

Application Integration with Prometheus¶

Here we use SpringBoot’s spring-boot-starter-actuator and micrometer.

Micrometer¶

• The application needs to introduce the following related dependencies

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

• Configure application.yaml

Add the following configuration

management:
  server:
    port: 8091
  endpoints:
    web:
      exposure:
        include: "*"
  metrics:
    tags:
      application: ${spring.application.name}
      env: ${spring.profiles.active}

• Access Metrics

After starting the application, open the browser at http://localhost:8091/actuator/prometheus, this port is the management port.

If the URL access is normal, it means the application has successfully integrated with prometheus.

DataKit Enable prom Collector¶

• Enable Collector

The directory for the collector is datakit/conf.d/prom. After entering the directory, copy prom.conf.sample and rename the new file to jvm-prom.conf. Mainly configure the URL and source; other parameters can be adjusted as needed.

urls =["http://localhost:8091/actuator/prometheus"]
source = "jvm-prom"

measurement_prefix = "jvm_"

The above configuration will generate Measurement sets starting with jvm_.

• Restart DataKit

Restart DataKit