springcloud学习-13 服务监控hystrixDashboard【周阳springcloud2020学习笔记】

柔情只为你懂 2023-02-22 03:55 4阅读 0赞

Hystrix-dashboard是一款针对Hystrix进行实时监控的可视化图形工具。  
通过Hystrix Dashboard我们可以在直观地看到各Hystrix Command的请求响应时间, 请求成功率等数据。

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1.新建 hystrix-dashboard-consumer9001  
2.pom.xml

<?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>demo2020</artifactId>
                <groupId>cn.chen.demo</groupId>
                <version>1.0-SNAPSHOT</version>
            </parent>
            <modelVersion>4.0.0</modelVersion>
    
            <artifactId>hystrix-dashboard-consumer9001</artifactId>
    
            <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.yml

server:
          port: 9001

4.主启动类：添加注解 @EnableHystrixDashboard 开启熔断监控支持

@SpringBootApplication
        @EnableHystrixDashboard
        public class HystrixDashboard9001 { 
        	public static void main(String[] args) { 
        		SpringApplication.run(HystrixDashboard9001.class,args);
        	}
        }

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所有Provider微服务提供类（8001/8002/8003）都需要监控依赖配置

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

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启动cloud-consumer-hystrix-dashboard9001该微服务后续将监控微服务8001  
http://localhost:9001/hystrix

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**修改cloud-provider-hystrix-payment8001**  
注意：新版本Hystrix需要在主启动类MainAppHystrix8001中指定监控路径

@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;
        }

没添加会出现 Unable to connect to Command Metric Stream 404

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监控测试  
1.启动eureka  
2.观察监控窗口  
9001监控8001：填写监控地址，http://localhost:8001/hystrix.stream  
测试：http://localhost:8001/payment/circuit/31  
http://localhost:8001/payment/circuit/-31

[**springcloud学习系列目录**][springcloud]

[springcloud]: https://blog.csdn.net/u010734213/article/details/107080320