目录
- hystrixDashboard服务监控
- 断路器演示监控
- 监控8001注意事项
- 监控测试
- 监控状态
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
<?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
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 @EnableHystrixDashboard public 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
<!--web--> <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
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 @EnableCircuitBreaker public 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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