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SpringCloud极简入门>断路器监控#hystrix dashboard


简介

hystrix dashboard可以监控微服务间调用情况,当有服务不可达时可以在控制台及时发现;但是只能监控一个微服务,若是要监控多个微服务,可以使用turbine组件;

前置内容:

实战

1、创建《hystrix-dashboard》模块

1.1、pom

<?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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>cc.catface</groupId>
<artifactId>simple-eureka</artifactId>
<version>0.0.1-SNAPSHOT</version>
</parent>
<artifactId>hystrix-dashboard</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>server-account</name>

<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-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-actuator</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>
</dependencies>
</project>

1.2、yml

server:
port: 8060

spring:
application:
name: hystrix-dashboard

eureka:
client:
service-url:
defaultZone: http://localhost:7000/eureka/

1.3、application

1、《server-account》的application声明注解​​@EnableCircuitBreaker​​,即将信息分享给监控中心hystrix dashboard;

2、《hystrix-dashboard》的application声明注解​​@EnableHystrixDashboard​​,即开启hystrix dashboard监控器;

2、查看效果

2.1、发起请求

请求http://localhost:7003/testFeign;

2.2、打开控制台观察

打开http://localhost:8060/hystrix,输入http://localhost:7003/actuator/hystrix.stream,点击Monitor Stream;


2.3、不停请求观察控制台

29是请求次数,0.0%表示《server-account》服务正常;

2.4、关闭《server-account》再不停请求观察控制台

100.0%表示《server-account》已不可达;


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