【Spring Cloud 笔记和总结】五、 Hystrix Dashboard和Turbine监控

一、Hystrix Dashboard监控

涉及项目
- service-consumer-hystrix => 基于service-consumer修改

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>com.lxt</groupId>
        <artifactId>springcloud</artifactId>
        <version>1.0-SNAPSHOT</version>
    </parent>
    <groupId>com.lxt</groupId>
    <artifactId>service-consumer-hystrix</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>service-consumer-hystrix</name>
    <description>Demo project for Spring Boot</description>

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

</project>

配置文件

spring:
  application:
    name: spring-cloud-consumer-hystrix
server:
  port: 9004
feign:
  hystrix:
    enabled: true
eureka:
  client:
    service-url:
      defaultZone: http://localhost:8000/eureka/

启动类添加注解,注意getServlet()方法，用于解决spring cloud2 hystrix没有hystrix.stream路径

package com.lxt.springcloudconsumerhystrix;

import com.netflix.hystrix.contrib.metrics.eventstream.HystrixMetricsStreamServlet;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.web.servlet.ServletRegistrationBean;
import org.springframework.cloud.client.circuitbreaker.EnableCircuitBreaker;
import org.springframework.cloud.client.discovery.EnableDiscoveryClient;
import org.springframework.cloud.netflix.hystrix.dashboard.EnableHystrixDashboard;
import org.springframework.cloud.openfeign.EnableFeignClients;
import org.springframework.context.annotation.Bean;

@SpringBootApplication
@EnableDiscoveryClient
@EnableFeignClients
@EnableHystrixDashboard
@EnableCircuitBreaker
public class SpringCloudConsumerHystrixApplication {

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

    /**
     * 解决：找不到/hystrix.stream 报错：=>Unable to connect to Command Metric Stream.
     * @return
     */
    @Bean
    public ServletRegistrationBean getServlet() {
        HystrixMetricsStreamServlet streamServlet = new HystrixMetricsStreamServlet();
        ServletRegistrationBean registrationBean = new ServletRegistrationBean(streamServlet);
        registrationBean.setLoadOnStartup(1);
        registrationBean.addUrlMappings("/hystrix.stream");
        registrationBean.setName("HystrixMetricsStreamServlet");
        return registrationBean;
    }
}

启动项目，浏览器输入http://localhost:9004/hystrix,如下：
- 监控默认集群：http://turbine-hostname:port/turbine.stream
- 监控指定集群：http://turbine-hostname:port/turbine.stream?cluster=[clusterName]
- 监控的那个应用：http://hystrix-app:port/hystrix.stream
输入http://localhost:9004/hystrix.stream进入监控页面，此时页面显示Loading
浏览器访问http://localhost:9004/hello/lxt之后，监控页面如下
图中参数解释如下
界面解读

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。
其他一些数量指标如下图所示

测试成功

二、Turbine集群监控

涉及项目
- hystrix-dashboard-turbine
- service-consumer-node01 => 基于service-consumer-hystrix
- service-consumer-node02 => 基于service-consumer-hystrix

hystrix-dashboard-turbine项目添加

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>com.lxt</groupId>
        <artifactId>springcloud</artifactId>
        <version>1.0-SNAPSHOT</version>
    </parent>
    <groupId>com.lxt</groupId>
    <artifactId>hystrix-dashboard-turbine</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>hystrix-dashboard-turbine</name>
    <description>Demo project for Spring Boot</description>
    <dependencies>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-hystrix</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-hystrix-dashboard</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-turbine</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-actuator</artifactId>
        </dependency>
    </dependencies>

</project>

配置文件

spring:
  application:
    name: turbine-client
server:
  port: 9009
turbine:
  # 需要监控的应用名称，默认逗号隔开，内部使用Stringutils.commaDelimitedListToStringArray分割
  app-config: hystrix-client1,hystrix-client2
  aggregator:
    cluster-config: default
  # 集群名称
  cluster-name-expression: new String("default")
  combine-host-port: true
eureka:
  client:
    service-url:
      defaultZone: http://localhost:8000/eureka/
  instance:
    # 启用ip配置 这样在注册中心列表中看见的是以ip+端口呈现的
    prefer-ip-address: true
    # 实例名称  最后呈现地址：ip:2000
    instance-id: ${spring.cloud.client.ip-address}:${server.port}

启动类

package com.lxt.hystrixdashboardturbine;

import com.netflix.hystrix.contrib.metrics.eventstream.HystrixMetricsStreamServlet;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.web.servlet.ServletRegistrationBean;
import org.springframework.cloud.netflix.hystrix.dashboard.EnableHystrixDashboard;
import org.springframework.cloud.netflix.turbine.EnableTurbine;
import org.springframework.context.annotation.Bean;

@SpringBootApplication
@EnableHystrixDashboard
@EnableTurbine
public class HystrixDashboardTurbineApplication {

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

    /**
     * @return
     */
    @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;
    }
}

service-consumer-node01/02的依赖、代码和service-consumer-hystrix一样，区别在于一个配置，如下

配置文件,关键点management.endpoints.web.exposure.include：hystrix.stream

spring:
  application:
    name: hystrix-client1
server:
  port: 9005

feign:
  hystrix:
    enabled: true
management:
  endpoints:
    web:
      exposure:
        # 2.x手动开启  这个是用来暴露 endpoints 的。由于 endpoints 中会包含很多敏感信息，除了 health 和 info 两个支持 web 访问外，其他的默认不支持 web 访问
        include: hystrix.stream
eureka:
  client:
    service-url:
      defaultZone: http://localhost:8000/eureka/

测试

分别启动注册中心、服务提供者、Turbine监控和两个服务消费者(service-consumer-node01/02)

TURBINE-CLIENT再注册中心显示ip:port
浏览器访问http://localhost:9009/hystrix,监控默认集群
浏览器访问http://localhost:9005/hello/lxt和http://localhost:9006/hello/lxt
测试成功

三、相关

父模块介绍传送门
源码地址传送门
参考
- https://www.cnblogs.com/carrychan/p/9529418.html
- http://www.ityouknow.com/spring-cloud.html

【Spring Cloud 笔记和总结】五、 Hystrix Dashboard和Turbine监控

一、Hystrix Dashboard监控

二、Turbine集群监控

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