微服务以微出名,在实际的开发过程中,涉及到成百上千个服务,网络请求引起服务之间的调用极其复杂。
当请求不可用或者变慢时,需要及时排查出故障服务点成为了微服务维护的一大难关。
Zipkin 是一个开放源代码分布式的跟踪系统,由Twitter公司开源,它致力于收集服务的定时数据,以解决微服务架构中的延迟问题,包括数据的收集、存储、查找和展现。
每个服务向zipkin报告计时数据,zipkin会根据调用关系通过Zipkin UI生成依赖关系图,显示了多少跟踪请求通过每个服务,该系统让开发者可通过一个 Web 前端轻松的收集和分析数据,例如用户每次请求服务的处理时间等,可方便的监测系统中存在的瓶颈。
Zipkin提供了可插拔数据存储方式:In-Memory、MySql、Cassandra以及Elasticsearch。接下来的测试为方便直接采用In-Memory方式进行存储,生产推荐Elasticsearch。
在Zuul集群的代码上进行修改:https://github.com/HCJ-shadow/Zuul-Gateway-Cluster-Nginx
创建zipkin-server
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客户端启动需要依赖web模块--> <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>
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
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); } }
<dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-starter-zipkin</artifactId> </dependency>
spring: zipkin: base-url: http://localhost:9001
访问
localhost:9001
<?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客户端启动需要依赖web模块--> <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>
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 #访问路径可以显示IP地址 management: endpoint: health: show-details: always endpoints: web: exposure: include: ["health","info"]
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); } }
依次启动Eureka,provider,zuul,zipkin,admin
访问Eureka
http://localhost:2001/
访问
http://localhost:10001
代码参考:https://github.com/HCJ-shadow/Zipkin-SpringBoot-Admin