服務鏈路跟蹤 && 服務監控
- 2019 年 10 月 3 日
- 筆記
服務鏈路跟蹤
背景
微服務以微出名，在實際的開發過程中，涉及到成百上千個服務，網絡請求引起服務之間的調用極其複雜。
當請求不可用或者變慢時，需要及時排查出故障服務點成為了微服務維護的一大難關。
服務鏈路跟蹤技術應運而生。
ZipKin
Zipkin 是一個開放源代碼分佈式的跟蹤系統，由Twitter公司開源，它致力於收集服務的定時數據，以解決微服務架構中的延遲問題，包括數據的收集、存儲、查找和展現。
每個服務向zipkin報告計時數據，zipkin會根據調用關係通過Zipkin UI生成依賴關係圖，顯示了多少跟蹤請求通過每個服務，該系統讓開發者可通過一個 Web 前端輕鬆的收集和分析數據，例如用戶每次請求服務的處理時間等，可方便的監測系統中存在的瓶頸。
Zipkin提供了可插拔數據存儲方式：In-Memory、MySql、Cassandra以及Elasticsearch。接下來的測試為方便直接採用In-Memory方式進行存儲，生產推薦Elasticsearch。
快速入門
在Zuul集群的代碼上進行修改：https://github.com/HCJ-shadow/Zuul-Gateway-Cluster-Nginx
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創建zipkin-server
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pom【zipkin】
<parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>2.1.7.RELEASE</version> <relativePath/> <!-- lookup parent from repository --> </parent> <properties> <java.version>1.8</java.version> <spring-cloud.version>Greenwich.SR2</spring-cloud.version> </properties> <dependencies> <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-test</artifactId> <scope>test</scope> </dependency> <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-starter-config</artifactId> </dependency> <!-- Eureka客戶端啟動需要依賴web模塊--> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-starter-zipkin</artifactId> </dependency> </dependencies> <dependencyManagement> <dependencies> <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-dependencies</artifactId> <version>${spring-cloud.version}</version> <type>pom</type> <scope>import</scope> </dependency> </dependencies> </dependencyManagement> <build> <plugins> <plugin> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-maven-plugin</artifactId> </plugin> </plugins> </build>- yaml
eureka: client: serviceUrl: defaultZone: http://eureka2001.com:2001/eureka/,http://eureka2002.com:2002/eureka/,http://eureka2003.com:2003/eureka/ server: port: 9001 spring: application: name: zipkin-server- 主啟動類@EnableZipkinServer
package zkrun.top; import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; import org.springframework.cloud.netflix.eureka.EnableEurekaClient; import zipkin2.server.internal.EnableZipkinServer; @EnableEurekaClient @SpringBootApplication @EnableZipkinServer public class App_Zipkin_9001 { public static void main(String[] args) { SpringApplication.run(App_Zipkin_9001.class,args); } }- 向其他服務注入Zipkin監控
<dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-starter-zipkin</artifactId> </dependency>spring: zipkin: base-url: http://localhost:9001訪問
localhost:9001
服務監控
- 創建msc-springboot-admin-10001
- pom
<?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> <groupId>zkrun.top</groupId> <artifactId>msc-springboot-admin-10001</artifactId> <version>1.0-SNAPSHOT</version> <parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>2.1.7.RELEASE</version> <relativePath/> <!-- lookup parent from repository --> </parent> <properties> <java.version>1.8</java.version> <spring-cloud.version>Greenwich.SR2</spring-cloud.version> </properties> <dependencies> <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-test</artifactId> <scope>test</scope> </dependency> <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-starter-config</artifactId> </dependency> <!-- Eureka客戶端啟動需要依賴web模塊--> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-starter-zipkin</artifactId> </dependency> <dependency> <groupId>de.codecentric</groupId> <artifactId>spring-boot-admin-starter-server</artifactId> <version>2.1.5</version> </dependency> </dependencies> <dependencyManagement> <dependencies> <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-dependencies</artifactId> <version>${spring-cloud.version}</version> <type>pom</type> <scope>import</scope> </dependency> </dependencies> </dependencyManagement> <build> <plugins> <plugin> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-maven-plugin</artifactId> </plugin> </plugins> </build> </project>- yaml
server: port: 10001 spring: application: name: admin-server zipkin: base-url: http://localhost:9001 eureka: client: service-url: defaultZone: http://eureka2001.com:2001/eureka/,http://eureka2002.com:2002/eureka/,http://eureka2003.com:2003/eureka/ instance: instance-id: admin-server-10001 prefer-ip-address: true #訪問路徑可以顯示IP地址 management: endpoint: health: show-details: always endpoints: web: exposure: include: ["health","info"]- 主類@EnableAdminServer
package zkrun.top; import de.codecentric.boot.admin.server.config.EnableAdminServer; import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; import org.springframework.cloud.netflix.eureka.EnableEurekaClient; @SpringBootApplication @EnableAdminServer @EnableEurekaClient public class App_Admin_10001 { public static void main(String[] args) { SpringApplication.run(App_Admin_10001.class,args); } }依次啟動Eureka，provider，zuul，zipkin，admin
訪問Eureka
http://localhost:2001/
訪問
http://localhost:10001
代碼參考：https://github.com/HCJ-shadow/Zipkin-SpringBoot-Admin
