SpringCloud基础知识【Hystrix熔断器--Turbine搭建步骤】

Turbine聚合监控

一、搭建监控模块

1. 创建监控模块

创建hystrix-monitor模块，使用Turbine聚合监控多个Hystrix dashboard功能,

2. 引入Turbine聚合监控起步依赖

<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">
    <parent>
        <artifactId>hystrix-parentartifactId>
        <groupId>com.itheimagroupId>
        <version>1.0-SNAPSHOTversion>
    parent>
    <modelVersion>4.0.0modelVersion>

    <artifactId>hystrix-monitorartifactId>
    <properties>
        <project.build.sourceEncoding>UTF-8project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8project.reporting.outputEncoding>
        <java.version>1.8java.version>
    properties>

    <dependencies>
        <dependency>
            <groupId>org.springframework.cloudgroupId>
            <artifactId>spring-cloud-starter-netflix-hystrix-dashboardartifactId>
        dependency>

        <dependency>
            <groupId>org.springframework.cloudgroupId>
            <artifactId>spring-cloud-starter-netflix-turbineartifactId>
        dependency>

        <dependency>
            <groupId>org.springframework.bootgroupId>
            <artifactId>spring-boot-starter-actuatorartifactId>
        dependency>

        <dependency>
            <groupId>org.springframework.cloudgroupId>
            <artifactId>spring-cloud-starter-netflix-eureka-clientartifactId>
        dependency>


        <dependency>
            <groupId>org.springframework.bootgroupId>
            <artifactId>spring-boot-starter-testartifactId>
            <scope>testscope>
        dependency>
    dependencies>

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

project>

3. 修改application.yml

spring:
  application.name: hystrix-monitor
server:
  port: 8769
turbine:
  combine-host-port: true
  # 配置需要监控的服务名称列表
  app-config: hystrix-provider,hystrix-consumer
  cluster-name-expression: "'default'"
  aggregator:
    cluster-config: default
  #instanceUrlSuffix: /actuator/hystrix.stream
eureka:
  client:
    serviceUrl:
      defaultZone: http://localhost:8761/eureka/

4. 创建启动类

@SpringBootApplication
@EnableEurekaClient

@EnableTurbine //开启Turbine 很聚合监控功能
@EnableHystrixDashboard //开启Hystrix仪表盘监控功能
public class HystrixMonitorApp {

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

}

二、修改被监控模块

需要分别修改 hystrix-provider 和 hystrix-consumer 模块：

1、导入依赖：

		<dependency>
            <groupId>org.springframework.bootgroupId>
            <artifactId>spring-boot-starter-actuatorartifactId>
        dependency>

        <dependency>
            <groupId>org.springframework.cloudgroupId>
            <artifactId>spring-cloud-starter-netflix-hystrixartifactId>
        dependency>

        <dependency>
            <groupId>org.springframework.cloudgroupId>
            <artifactId>spring-cloud-starter-netflix-hystrix-dashboardartifactId>
        dependency>

2、配置Bean

此处为了方便，将其配置在启动类中。

@Bean
    public ServletRegistrationBean getServlet() {
        HystrixMetricsStreamServlet streamServlet = new HystrixMetricsStreamServlet();
        ServletRegistrationBean registrationBean = new ServletRegistrationBean(streamServlet);
        registrationBean.setLoadOnStartup(1);
        registrationBean.addUrlMappings("/actuator/hystrix.stream");
        registrationBean.setName("HystrixMetricsStreamServlet");
        return registrationBean;
    }

3、启动类上添加注解@EnableHystrixDashboard

@EnableDiscoveryClient
@EnableEurekaClient
@SpringBootApplication
@EnableFeignClients 
@EnableHystrixDashboard // 开启Hystrix仪表盘监控功能
public class ConsumerApp {


    public static void main(String[] args) {
        SpringApplication.run(ConsumerApp.class,args);
    }
    @Bean
    public ServletRegistrationBean getServlet() {
        HystrixMetricsStreamServlet streamServlet = new HystrixMetricsStreamServlet();
        ServletRegistrationBean registrationBean = new ServletRegistrationBean(streamServlet);
        registrationBean.setLoadOnStartup(1);
        registrationBean.addUrlMappings("/actuator/hystrix.stream");
        registrationBean.setName("HystrixMetricsStreamServlet");
        return registrationBean;
    }
}

三、启动测试

1、启动服务：

• eureka-server

• hystrix-provider

• hystrix-consumer

• hystrix-monitor

2、访问：

在浏览器访问http://localhost:8769/hystrix/ 进入Hystrix Dashboard界面

界面中输入监控的Url地址 http://localhost:8769/turbine.stream，监控时间间隔2000毫秒和title，如下图

• 实心圆：它有颜色和大小之分，分别代表实例的监控程度和流量大小。如上图所示，它的健康度从绿色、黄色、橙色、红色递减。通过该实心圆的展示，我们就可以在大量的实例中快速的发现故障实例和高压力实例。
• 曲线：用来记录 2 分钟内流量的相对变化，我们可以通过它来观察到流量的上升和下降趋势。