spring cloud turbine
簡介
turbine是聚合服務器發送事件流數據的一個工具，hystrix的監控中，只能監控單個節點，實際生產中都爲集羣，因此可以通過
turbine來監控集羣下hystrix的metrics情況，通過eureka來發現hystrix服務。
netflix turbine
使用官方給定的war
放入tomcat中運行，修改turbine-web-1.0.0/WEB-INF/classes下config.properties文件
turbine.aggregator.clusterConfig=test turbine.ConfigPropertyBasedDiscovery.test.instances=10.0.80.60,10.0.41.13 turbine.instanceUrlSuffix=:8080/configcenter-web/hystrix.stream
turbine.aggregator.clusterConfig 配置集羣名稱
turbine.ConfigPropertyBasedDiscovery.test.instances 配置集羣節點ip(用以發現服務，規則不限在ip列表)
turbine.instanceUrlSuffix 聚合實例訪問後綴
重啓tomcat後訪問http://localhost:${port}/turbine.stream?cluster=test 獲取聚合信息
spring cloud turbine
通過EnableTurbine註解啓用turbine,需要引入依賴：
<dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-netflix-turbine</artifactId> </dependency>
Application.java
package com.lkl.springcloud.turbine;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.builder.SpringApplicationBuilder;
import org.springframework.cloud.netflix.turbine.EnableTurbine;
/**
* 創建turbine應用
* Created by liaokailin on 16/5/1.
*/
@SpringBootApplication
@EnableTurbine
public class Application {
public static void main(String[] args) {
new SpringApplicationBuilder(Application.class).web(true).run(args);
}
}對應配置信息
server.port=9090 spring.application.name=turbine turbine.appConfig=node01,node02 turbine.aggregator.clusterConfig= MAIN turbine.clusterNameExpression= metadata['cluster']
turbine.appConfig 配置需要聚合的應用 turbine.aggregator.clusterConfig turbine需要聚合的集羣名稱 通過 http://localhost:9090/turbine.stream?cluster=MAIN 訪問 turbine.clusterNameExpression 獲取集羣名表達式，這裏表示獲取元數據中的cluster數據，在node01、node02爲配置對應信息
eureka服務
通過eureka做服務發現與註冊
EurekaServer.java
package com.lkl.springcloud.turbine;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.boot.builder.SpringApplicationBuilder;
import org.springframework.cloud.netflix.eureka.server.EnableEurekaServer;
import org.springframework.context.annotation.Configuration;
@Configuration
@EnableAutoConfiguration
@EnableEurekaServer
public class EurekaServer {
public static void main(String[] args) {
new SpringApplicationBuilder(EurekaServer.class).properties(
"spring.config.name:eureka", "logging.level.com.netflix.discovery:OFF")
.run(args);
}
}對應配置信息 表明爲一個獨立的eureka服務
server.port=8761 spring.application.name=eureka eureka.client.registerWithEureka=false eureka.client.fetchRegistry=false
Node
需要創建兩個節點組成集羣，同時向eureka註冊服務
Node01.java
package com.lkl.springcloud.turbine;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixCommand;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.boot.builder.SpringApplicationBuilder;
import org.springframework.cloud.client.circuitbreaker.EnableCircuitBreaker;
import org.springframework.cloud.client.discovery.EnableDiscoveryClient;
import org.springframework.context.annotation.Configuration;
import org.springframework.stereotype.Component;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
/**
* Created by liaokailin on 16/5/4.
*/
@Configuration
@EnableAutoConfiguration
@EnableDiscoveryClient
@EnableCircuitBreaker
@RestController
public class Node01 {
public static void main(String[] args) {
new SpringApplicationBuilder(Node01.class).properties(
"spring.config.name:node01").run(args);
}
@Autowired
private HelloService service;
@RequestMapping("/")
public String hello() {
return this.service.hello();
}
@Component
public static class HelloService {
@HystrixCommand(fallbackMethod="fallback")
public String hello() {
return "Hello World";
}
public String fallback() {
return "Fallback";
}
}
}Node01調用hystrix command，對應配置
server.port= 8081
spring.application.name=node01
eureka.instance.hostname=localhost
eureka.instance.metadata-map.cluster=MAIN
配置比較簡單，需要注意的有eureka.instance.hostname,把Node02 展示出來再說明eureka.instance.hostname
Node02.java
package com.lkl.springcloud.turbine;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixCommand;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.builder.SpringApplicationBuilder;
import org.springframework.cloud.client.circuitbreaker.EnableCircuitBreaker;
import org.springframework.cloud.client.discovery.EnableDiscoveryClient;
import org.springframework.context.annotation.Configuration;
import org.springframework.stereotype.Component;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
/**
* Created by liaokailin on 16/5/4.
*/
@Configuration
@EnableAutoConfiguration
@EnableDiscoveryClient
@EnableCircuitBreaker
@RestController
public class Node02 {
public static void main(String[] args) {
new SpringApplicationBuilder(Node02.class).properties(
"spring.config.name:node02").run(args);
}
@Autowired
private HelloService service;
@RequestMapping("/")
public String hello() {
return this.service.hello();
}
@Component
public static class HelloService {
@HystrixCommand(fallbackMethod="fallback")
public String hello() {
return "Hello World";
}
public String fallback() {
return "Fallback";
}
}
}node02.properties
server.port= 8082 spring.application.name=node02 eureka.instance.hostname=mac eureka.instance.metadata-map.cluster=MAIN
兩個節點中eureka.instance.hostname不同
查看 cat /etc/hosts
127.0.0.1 mac 127.0.0.1 localhost 255.255.255.255 broadcasthost ::1 localhost
實質指向都爲127.0.0.1
這是由於turbine自身的一個bug，eureka.instance.hostname一致時只能檢測到一個節點，因此修改hosts，如果是在不同機器演示時不會出現這樣的情況
note 節點默認向http://localhost:8761/eureka/apps註冊，不需要單獨配置
運行
將所有的應用都啓動起來，訪問http://localhost:8761/ 可以發現註冊服務 
在http://localhost:8080/hystrix-dashboard-1.4.10/中輸入http://localhost:9090/turbine.stream?cluster=MAIN 得到監控界面;
訪問http://localhost:8081/ http://localhost:8082/ 觀察dashboard的變化 
ok ~ it’s work ! more about is here