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:
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:
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