hystrixDashboard服务监控
除了隔离依赖服务的调用以外，Hystrix还提供了准实时的调用监控（Hystrix Dashboard），Hystrix会持续地记录所有通过Hystrix发起的请求的执行信息，并以统计报表和图形的形式展示给用户，包括每秒执行多少请求多少成功，多少失败等。Netflix通过hystrix-metrics-event-stream项目实现了对以上指标的监控。Spring Cloud也提供了Hystrix Dashboard的整合，对监控内容转化成可视化界面。
1、新建cloud-consumer-hystrix-dashboard9001仪表盘监控模块
2、修改pom.xml文件引入仪表盘依赖
核心依赖：spring-cloud-starter-netflix-hystrix-dashboard
注意：所有的图形化展示，都需要引入spring-boot-starter-actuator依赖，在8001、8002上都需要引入
1 | <!--?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"><parent><artifactid>springcloud2022</artifactid><groupid>com.zcl.springcloud</groupid><version>1.0-SNAPSHOT</version></parent><modelversion>4.0.0</modelversion><artifactid>cloud-consumer-hystrix-dashboard9001</artifactid><properties><maven.compiler.source>8</maven.compiler.source><maven.compiler.target>8</maven.compiler.target></properties><dependencies><dependency><groupid>org.springframework.cloud</groupid><artifactid>spring-cloud-starter-netflix-hystrix-dashboard</artifactid></dependency><dependency><groupid>org.springframework.boot</groupid><artifactid>spring-boot-starter-actuator</artifactid></dependency><dependency><groupid>org.springframework.boot</groupid><artifactid>spring-boot-devtools</artifactid><scope>runtime</scope><optional>true</optional></dependency><dependency><groupid>org.projectlombok</groupid><artifactid>lombok</artifactid><optional>true</optional></dependency><dependency><groupid>org.springframework.boot</groupid><artifactid>spring-boot-starter-test</artifactid><scope>test</scope></dependency></dependencies></project> |
3、添加YAML配置文件
server:
port: 9001
4、建立启动类
必须要加上@EnableHystrixDashboard注解激活
1 2 3 4 5 6 7 8 9 10 11 12 13 14 | package com.zcl.springcloud;import org.springframework.boot.SpringApplication;import org.springframework.boot.autoconfigure.SpringBootApplication;import org.springframework.cloud.netflix.hystrix.dashboard.EnableHystrixDashboard;/** * 描述：仪表盘启动类 */@SpringBootApplication@EnableHystrixDashboardpublic class HystrixDashboardMain9001 { public static void main(String[] args) { SpringApplication.run(HystrixDashboardMain9001.class, args); }} |
5、启动项目
启动项目测试：http://localhost:901/hystrix
使用方法：在下面页面中输入需要进行监控的地址即可
断路器演示监控
监控8001注意事项
1、必须要有如下的两个依赖
1 | <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> |
2、对启动类的修改
注意:新版本Hystrix需要在主启动类MainAppHystrix8001中指定监控路径,否则会出现报错
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 | package com.zcl.springcloud;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.netflix.eureka.EnableEurekaClient;import org.springframework.context.annotation.Bean;/** * 描述：熔断限流启动类 */@SpringBootApplication@EnableEurekaClient@EnableCircuitBreakerpublic class PaymentHystrixMain8001 { public static void main(String[] args) { SpringApplication.run(PaymentHystrixMain8001.class, args); } /** *此配置是为了服务监控而配置，与服务容错本身无关，springcloud升级后的坑 *ServletRegistrationBean因为springboot的默认路径不是"/hystrix.stream"， *只要在自己的项目里配置上下面的servlet就可以了 */ @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; }} |
监控测试
启动7001Eureka服务中心
观察监控窗口
9001监控8001
8001地址测试
先访问正确地址，再访问错误地址，再正确地址，会发现图示断路器都是慢慢放开的。
http://localhost:8001/payment/circuit/31：正常的访问
http://localhost:8001/payment/circuit/-31：异常访问
监控状态
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