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Install Prometheus Server

# download package
https://github.com/prometheus/prometheus/releases/download/v3.1.0/prometheus-3.1.0.linux-amd64.tar.gz

# edit prometheus config
prometheus-linux-amd64/prometheus.yml

scrape_configs:- job_name: "prometheus"metrics_path: '/actuator/prometheus'scheme: 'http'static_configs:- targets: ["localhost:10003"]

# run server
sudo ./prometheus

# visit admin page
http://localhost:9090

Install Grafana Server

# download package
https://dl.grafana.com/enterprise/release/grafana-enterprise-11.5.0.linux-amd64.tar.gz

# run server
sudo bin/grafana server

# visit admin page
http://localhost:3000 admin/admin

Spring Prometheus Project

pluginManagement {repositories {gradlePluginPortal()google()mavenCentral()}
}dependencyResolutionManagement {repositoriesMode = RepositoriesMode.PREFER_SETTINGSrepositories {gradlePluginPortal()google()mavenCentral()}
}buildscript {repositories {gradlePluginPortal()google()mavenCentral()}
}plugins {id("org.jetbrains.kotlin.jvm") version "2.0.21" apply falseid("org.jetbrains.kotlin.kapt") version "2.0.21" apply falseid("org.jetbrains.kotlin.plugin.spring") version "2.0.21" apply falseid("org.springframework.boot") version "3.4.1" apply false
}include("prometheus-app")

Spring Prometheus Properties

# service
server.port=10003
spring.application.name=prometheus-app
spring.profiles.active=dev
spring.devtools.add-properties=false
management.endpoints.web.exposure.include=*
# prometheus
management.prometheus.metrics.export.enabled=true

Spring Prometheus Application

package x.spring.helloimport org.springframework.boot.autoconfigure.SpringBootApplication
import org.springframework.boot.runApplication@SpringBootApplication
class PrometheusApplicationfun main(args: Array<String>) {runApplication<PrometheusApplication>(*args)
}

Spring Prometheus Configuration

package x.spring.hello.componentimport io.micrometer.core.instrument.Counter
import io.micrometer.core.instrument.MeterRegistry
import org.springframework.beans.factory.annotation.Value
import org.springframework.context.annotation.Bean
import org.springframework.stereotype.Component@Component
class MetricsProvider {@Bean(name = ["count"])fun getCounterMetrics(registry: MeterRegistry,@Value("\${spring.application.name}") name: String): Counter {return registry.counter("count_api_calling_times", "application", name)}
}

Spring Prometheus Controller

package x.spring.hello.controllerimport io.micrometer.core.instrument.Counter
import jakarta.annotation.Resource
import org.springframework.web.bind.annotation.GetMapping
import org.springframework.web.bind.annotation.RestController@RestController
class MetricsController {@Resource(name = "count")private lateinit var counterMetrics: Counter@GetMapping("/count")fun count(): String {counterMetrics.increment()return "count_api_calling_times_total +1"}
}

Configure Grafana Dash Board

# add data source
Connections -> Data Sources -> Add Data Source -> Prometheus
settings.name=prometheus
connection.url=http://localhost:9090

# create dash board
Dashboards -> Create Dashboard -> Add Visualization -> Add Queries -> Run Queries
datasource=prometheus
metrics=count_api_calling_times_total