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SpringCloud使用Prometheus監控(基于Eureka)1.Prometheus介紹2.Eureka Server3.Eureka Client4.Prometheus配置5.測試6.源碼

本文介紹SpringCloud使用Prometheus,基于Eureka服務發現。

1.Prometheus介紹

在之前寫過兩篇有關Prometheus使用的文章,如下:

《SpringBoot使用prometheus監控》 《SpringBoot使用SOFA-Lookout監控》

但是如果使用微服務的話,一個服務一個服務的配置似乎太麻煩,Prometheus提供了很多服務發現的機制去統一配置服務,具體可以檢視官網介紹:[

https://prometheus.io/docs/prometheus/latest/configuration/configuration/]()

包含如下這些配置:

從圖中可以看出,這裡提供了Consul的服務發現機制,沒有Eureka的服務發現機制。但是如果Eureka想要使用的話可以通過配置一個擴充卡的方式,使用consul_sd_config配置的方式使用Prometheus服務發現。

2.Eureka Server

建立一個Eureka Server,這裡使用的Eureka最新版本Greenwich.SR1,也就是現在Idea預設建立的,在配置中加入eureka-consul-adapter依賴,pom檔案完整内容如下所示。

<?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>           

這裡需要注意一下SpringCloud版本與eureka-consul-adapter的對照,如下所示。

剩下的就是一些簡單地配置,如配置檔案:

server.port=8761

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

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

啟動類加入注解啟動注冊中心,如下:

@SpringBootApplication
@EnableEurekaServer //啟動服務注冊中心
public class SpringcloudPrometheusServerApplication {

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

}           

3.Eureka Client

其實這個也沒什麼好說的,和普通使用Prometheus一樣,當然,也可以使用SOFA-Lookout的模式,這裡根據情況自行選擇即可,這裡以使用micrometer-registry-prometheus依賴為例,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>           

配置檔案如下,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}
           

啟動類如下:

@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位址(server),以及需要收集的服務(services)。

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

5.測試

分别啟動Eureka-Server和Eureka-Client,首先檢視Eureka界面,如下:

接下來檢視一下Prometheus,如下:

從上圖可以看到,服務以及被收集了,接下來檢視grafana控制台,如圖:

6.源碼

源碼位址:

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