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SpringCloud使用Prometheus监控(基于Eureka)


本文介绍SpringCloud使用Prometheus,基于Eureka服务发现。

1.Prometheus介绍

在之前写过两篇有关Prometheus使用的文章,如下:

《SpringBoot使用prometheus监控》

《SpringBoot使用SOFA-Lookout监控》

但是如果使用微服务的话,一个服务一个服务的配置似乎太麻烦,Prometheus提供了很多服务发现的机制去统一配置服务,具体可以查看官网介绍:https://prometheus.io/docs/prometheus/latest/configuration/configuration/

包含如下这些配置:

从图中可以看出,这里提供了Consul的服务发现机制,没有Eureka的服务发现机制。但是如果Eureka想要使用的话可以通过配置一个适配器的方式,使用consul_sd_config配置的方式使用Prometheus服务发现。

2.Eureka Server

创建一个Eureka Server,这里使用的Eureka最新版本Greenwich.SR1,也就是现在Idea默认创建的,在配置中加入eureka-consul-adapter依赖,pom文件完整内容如下所示。

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.1.3.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.dalaoyang</groupId>
    <artifactId>springcloud_prometheus_server</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>springcloud_prometheus_server</name>
    <description>springcloud_prometheus_server</description>

    <properties>
        <java.version>1.8</java.version>
        <spring-cloud.version>Greenwich.SR1</spring-cloud.version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-eureka-server</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>

        <dependency>
            <groupId>at.twinformatics</groupId>
            <artifactId>eureka-consul-adapter</artifactId>
            <version>1.1.0</version>
        </dependency>

    </dependencies>

    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-dependencies</artifactId>
                <version>${spring-cloud.version}</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
        </dependencies>
    </dependencyManagement>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>

    <repositories>
        <repository>
            <id>spring-milestones</id>
            <name>Spring Milestones</name>
            <url>https://repo.spring.io/milestone</url>
        </repository>
    </repositories>

</project>

这里需要注意一下SpringCloud版本与eureka-consul-adapter的对照,如下所示。

剩下的就是一些简单地配置,如配置文件:

server.port=8761

eureka.instance.hostname=localhost
eureka.client.service-url.defaultZone=http://${eureka.instance.hostname}:${server.port}/eureka/

##禁止自己向自己注册
eureka.client.register-with-eureka=false
eureka.client.fetch-registry=false

启动类加入注解启动注册中心,如下:

@SpringBootApplication
@EnableEurekaServer //启动服务注册中心
public class SpringcloudPrometheusServerApplication {

    public static void main(String[] args) {
        SpringApplication.run(SpringcloudPrometheusServerApplication.class, args);
    }

}

3.Eureka Client

其实这个也没什么好说的,和普通使用Prometheus一样,当然,也可以使用SOFA-Lookout的模式,这里根据情况自行选择即可,这里以使用micrometer-registry-prometheus依赖为例,完整pom如下所示。

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.1.3.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.dalaoyang</groupId>
    <artifactId>springcloud_prometheus_client</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>springcloud_prometheus_client</name>
    <description>springcloud_prometheus_client</description>

    <properties>
        <java.version>1.8</java.version>
        <spring-cloud.version>Greenwich.SR1</spring-cloud.version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-actuator</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>io.micrometer</groupId>
            <artifactId>micrometer-registry-prometheus</artifactId>
            <version>1.1.3</version>
        </dependency>
    </dependencies>

    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-dependencies</artifactId>
                <version>${spring-cloud.version}</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
        </dependencies>
    </dependencyManagement>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>

    <repositories>
        <repository>
            <id>spring-milestones</id>
            <name>Spring Milestones</name>
            <url>https://repo.spring.io/milestone</url>
        </repository>
    </repositories>

</project>

配置文件如下,端口号8888,如下:

##端口号
server.port=8888

spring.application.name=springboot_prometheus_client

eureka.client.service-url.defaultZone=http://server1:8761/eureka/

management.endpoints.web.exposure.include=*
management.metrics.tags.application=${spring.application.name}

启动类如下:

@SpringBootApplication
public class SpringcloudPrometheusClientApplication {

    public static void main(String[] args) {
        SpringApplication.run(SpringcloudPrometheusClientApplication.class, args);
    }

    @Bean
    MeterRegistryCustomizer<MeterRegistry> configurer(
            @Value("${spring.application.name}") String applicationName) {
        return (registry) -> registry.config().commonTags("application", applicationName);
    }

}

4.Prometheus配置

在Prometheus中配置eureka地址(server),以及需要收集的服务(services)。

  - job_name: 'consul-prometheus'
    scheme: http
    metrics_path: '/actuator/prometheus'
    consul_sd_configs:
    #consul 地址
      - server: '127.0.0.1:8761'
        scheme: http
        services: [SPRINGBOOT_PROMETHEUS_CLIENT]

5.测试

分别启动Eureka-Server和Eureka-Client,首先查看Eureka界面,如下:

接下来查看一下Prometheus,如下:

从上图可以看到,服务以及被收集了,接下来查看grafana控制台,如图:

6.源码

源码地址:

Eureka Server : https://gitee.com/dalaoyang/springcloud_learn/tree/master/springcloud_prometheus_server

Eureka Client : https://gitee.com/dalaoyang/springcloud_learn/tree/master/springcloud_prometheus_client





标签: SPRINGBOOT SPRINGCLOUD PROMETHEUS