【Spring Cloud 筆記和總結】五、 Hystrix Dashboard和Turbine監控

一、Hystrix Dashboard監控

涉及項目
- service-consumer-hystrix => 基於service-consumer修改

依賴

<?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/

啓動類添加註解,注意getServlet()方法，用於解決spring cloud2 hystrix沒有hystrix.stream路徑

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);
    }

    /**
     * 解決：找不到/hystrix.stream 報錯：=>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;
    }
}

啓動項目，瀏覽器輸入http://localhost:9004/hystrix,如下：
- 監控默認集羣：http://turbine-hostname:port/turbine.stream
- 監控指定集羣：http://turbine-hostname:port/turbine.stream?cluster=[clusterName]
- 監控的那個應用：http://hystrix-app:port/hystrix.stream
輸入http://localhost:9004/hystrix.stream進入監控頁面，此時頁面顯示Loading
瀏覽器訪問http://localhost:9004/hello/lxt之後，監控頁面如下
圖中參數解釋如下
界面解讀

實心圓：它有顏色和大小之分，分別代表實例的監控程度和流量大小。如上圖所示，它的健康度從綠色、黃色、橙色、紅色遞減。通過該實心圓的展示，我們就可以在大量的實例中快速的發現故障實例和高壓力實例。

曲線：用來記錄 2 分鐘內流量的相對變化，我們可以通過它來觀察到流量的上升和下降趨勢。
其他一些數量指標如下圖所示

測試成功

二、Turbine集羣監控

涉及項目
- hystrix-dashboard-turbine
- service-consumer-node01 => 基於service-consumer-hystrix
- service-consumer-node02 => 基於service-consumer-hystrix

hystrix-dashboard-turbine項目添加

依賴

<?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:
  # 需要監控的應用名稱，默認逗號隔開，內部使用Stringutils.commaDelimitedListToStringArray分割
  app-config: hystrix-client1,hystrix-client2
  aggregator:
    cluster-config: default
  # 集羣名稱
  cluster-name-expression: new String("default")
  combine-host-port: true
eureka:
  client:
    service-url:
      defaultZone: http://localhost:8000/eureka/
  instance:
    # 啓用ip配置 這樣在註冊中心列表中看見的是以ip+端口呈現的
    prefer-ip-address: true
    # 實例名稱  最後呈現地址：ip:2000
    instance-id: ${spring.cloud.client.ip-address}:${server.port}

啓動類

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的依賴、代碼和service-consumer-hystrix一樣，區別在於一個配置，如下

配置文件,關鍵點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手動開啓  這個是用來暴露 endpoints 的。由於 endpoints 中會包含很多敏感信息，除了 health 和 info 兩個支持 web 訪問外，其他的默認不支持 web 訪問
        include: hystrix.stream
eureka:
  client:
    service-url:
      defaultZone: http://localhost:8000/eureka/

測試

分別啓動註冊中心、服務提供者、Turbine監控和兩個服務消費者(service-consumer-node01/02)

TURBINE-CLIENT再註冊中心顯示ip:port
瀏覽器訪問http://localhost:9009/hystrix,監控默認集羣
瀏覽器訪問http://localhost:9005/hello/lxt和http://localhost:9006/hello/lxt
測試成功

三、相關

父模塊介紹傳送門
源碼地址傳送門
參考
- https://www.cnblogs.com/carrychan/p/9529418.html
- http://www.ityouknow.com/spring-cloud.html

【Spring Cloud 筆記和總結】五、 Hystrix Dashboard和Turbine監控

一、Hystrix Dashboard監控

二、Turbine集羣監控

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【Spring Cloud 筆記和總結】五、 Hystrix Dashboard和Turbine監控

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