• SpringCloud使用Sofa-lookout监控(基于Eureka)


    本文介绍SpringCloud使用Sofa-lookout,基于Eureka服务发现。

    1.前景

    本文属于是前几篇文章的后续,其实一开始感觉这个没有什么必要写的,但是最近一个朋友问我关于这个的问题,所以想着还是写一篇基于Eureka监控使用Pormetheus监控Sofa-Lookout监控的文章。

    前几篇文章请看:

    《SpringBoot使用prometheus监控》

    《SpringBoot使用SOFA-Lookout监控》

    《SpringCloud使用Prometheus监控(基于Eureka)》

    至于使用consul服务发现监控这里就不介绍了,网上的文章很多,千篇一律。这一篇与上面的这个文章还是有一些不同的,Sofa-Lookout是通过暴露一个端口来进行监控,比较特殊,所以这里给大家借鉴一下。

    2.Eureka Server

    本文还是需要在Eureka上面加入eureka-consul-adapter依赖,eureka-consul-adapter项目github地址:

    https://github.com/twinformatics/eureka-consul-adapter

    这里在介绍一下Eureka Server内容,就是在普通Eureka Server基础上加入上述依赖,完整pom如下:

    <?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>2.1.4.RELEASE</version>
            <relativePath/> <!-- lookup parent from repository -->
        </parent>
        <groupId>com.dalaoyang</groupId>
        <artifactId>springcloud_sofalookout_server</artifactId>
        <version>0.0.1-SNAPSHOT</version>
        <name>springcloud_sofalookout_server</name>
        <description>springcloud_sofalookout_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>
    
    </project>
    
    

    配置文件如下:

    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
    

    启动类如下:

    package com.dalaoyang;
    
    import org.springframework.boot.SpringApplication;
    import org.springframework.boot.autoconfigure.SpringBootApplication;
    import org.springframework.cloud.netflix.eureka.server.EnableEurekaServer;
    
    @SpringBootApplication
    @EnableEurekaServer //启动服务注册中心
    public class SpringcloudSofalookoutServerApplication {
    
        public static void main(String[] args) {
            SpringApplication.run(SpringcloudSofalookoutServerApplication.class, args);
        }
    
    }
    
    

    3.Eureka Client

    这里有一些是与之前《SpringBoot使用SOFA-Lookout监控》文章不同的地方,首先在pom文件中加入sofa依赖:

    <?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>2.1.4.RELEASE</version>
            <relativePath/> <!-- lookup parent from repository -->
        </parent>
        <groupId>com.dalaoyang</groupId>
        <artifactId>springcloud_sofalookout_client</artifactId>
        <version>0.0.1-SNAPSHOT</version>
        <name>springcloud_sofalookout_client</name>
        <description>springcloud_sofalookout_client</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-client</artifactId>
            </dependency>
    
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-test</artifactId>
                <scope>test</scope>
            </dependency>
    
            <dependency>
                <groupId>com.alipay.sofa.lookout</groupId>
                <artifactId>lookout-sofa-boot-starter</artifactId>
                <version>1.5.2</version>
            </dependency>
            <dependency>
                <groupId>com.alipay.sofa.lookout</groupId>
                <artifactId>lookout-reg-prometheus</artifactId>
                <version>1.5.2</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>
    
    </project>
    
    

    配置文件配置如下:

    ##端口号
    server.port=8888
    ##服务名称
    spring.application.name=springboot_sofalookout_client
    ##EurekaServer
    eureka.client.service-url.defaultZone=http://server1:8761/eureka/
    
    com.alipay.sofa.lookout.prometheus-exporter-server-port=8081
    eureka.instance.metadata-map.address=${spring.cloud.client.ip-address}:${com.alipay.sofa.lookout.prometheus-exporter-server-port}
    
    
    
    
    

    其中需要解释如下两个参数:

    • com.alipay.sofa.lookout.prometheus-exporter-server-port:sofa-lookout端口
    • eureka.instance.metadata-map.address:封装的Eureka元信息,内容是真正sofa-lookout数据的地址,方便稍后prometheus使用,这个属性不是必须要叫这个名字!!!

    4.Prometheus

    prometheus配置如下:

    # my global config
    global:
      scrape_interval:     15s # Set the scrape interval to every 15 seconds. Default is every 1 minute.
      evaluation_interval: 15s # Evaluate rules every 15 seconds. The default is every 1 minute.
      # scrape_timeout is set to the global default (10s).
    
    # Alertmanager configuration
    alerting:
      alertmanagers:
      - static_configs:
        - targets:
          # - alertmanager:9093
    
    # Load rules once and periodically evaluate them according to the global 'evaluation_interval'.
    rule_files:
      # - "first_rules.yml"
      # - "second_rules.yml"
    
    # A scrape configuration containing exactly one endpoint to scrape:
    # Here it's Prometheus itself.
    scrape_configs:
      - job_name: 'prometheus'
        static_configs:
        - targets: ['127.0.0.1:9090']
    
      - job_name: 'consul-prometheus'
        consul_sd_configs:
          - server: '172.16.103.33:8761'
            services: [SPRINGBOOT_SOFALOOKOUT_CLIENT]
        relabel_configs:
          - source_labels: ['__meta_consul_metadata_address']
            target_label:  __address__
    
    

    这里有几点需要注意的:

    • 172.16.103.33是我的内网IP,这个不需太多关注。
    • relabel_configs标签用于修改一些默认配置,比如本文使用__meta_consul_metadata_address属性替代__address__属性,这里的__meta_consul_metadata_address属性值就是我们在application.properties中的eureka.instance.metadata-map.address属性值,这个是eureka-consul-adapter依赖为我们转换的。
    • 上面两个属性怎么获取的? 接下来告诉你!

    5.测试

    分别启动EurekaServer,EurekaClient,prometheus,首先查看Eureka,如图所示。

    实例已经注册了,接下来查看prometheus/targets,如图所示。

    从这里可以看到,prometheus已经可以成功收集了,接下来我们查看一下都有哪些属性,鼠标放到对应的labels上,如图所示。

    浮框的内容就是对应实例的属性值,可以对应使用。

    接下来查看对应Grafana,也可以查看到对应信息了,如图

    6.源码

    Eureka Server源码地址:https://gitee.com/dalaoyang/springcloud_learn/tree/master/springcloud_sofalookout_server

    Eureka Client源码地址:https://gitee.com/dalaoyang/springcloud_learn/tree/master/springcloud_sofalookout_client

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  • 原文地址:https://www.cnblogs.com/dalaoyang/p/10731063.html
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