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105 lines
2.8 KiB
105 lines
2.8 KiB
5 years ago
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# 配置Sleuth链路追踪
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配置了Sleuth可以很方便查看微服务的调用路线图，可快速定位问题。
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SOP基于SpringCloud，因此只要整合[Spring Cloud Sleuth](https://spring.io/projects/spring-cloud-sleuth)即可。
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除此之外，还需要支持dubbo的链路的跟踪，Sleuth在2.0已经对dubbo做了支持，详见：[brave-instrumentation-dubbo-rpc](https://github.com/openzipkin/brave/tree/master/instrumentation/dubbo-rpc)
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接入Spring Cloud Sleuth步骤如下：
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- 下载zipkin服务器
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以mac环境为例，执行下面命令，下载jar并启动zipkin服务
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```
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curl -sSL https://zipkin.io/quickstart.sh | bash -s
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java -jar zipkin.jar
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```
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默认端口是9411，更多安装方式详见：[quickstart](https://zipkin.io/pages/quickstart.html)
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- sop-gateway/pom.xml添加依赖
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```xml
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<!--开启zipkin服务链路跟踪-->
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<dependency>
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<groupId>org.springframework.cloud</groupId>
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<artifactId>spring-cloud-starter-zipkin</artifactId>
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</dependency>
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```
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配置文件新增
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```properties
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# zipkin服务跟踪
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spring.zipkin.base-url=http://127.0.0.1:9411/
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# 设置sleuth收集信息的比率，默认0.1，最大是1，数字越大越耗性能
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spring.sleuth.sampler.probability=1
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```
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重启sop-gateway
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- 打开sop-story-web/pom.xml
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添加依赖：
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```xml
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<!--开启zipkin服务链路跟踪-->
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<dependency>
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<groupId>org.springframework.cloud</groupId>
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<artifactId>spring-cloud-starter-zipkin</artifactId>
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</dependency>
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<!-- zipkin支持dubbo -->
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<dependency>
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<groupId>io.zipkin.brave</groupId>
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<artifactId>brave-instrumentation-dubbo-rpc</artifactId>
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<version>5.6.6</version>
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</dependency>
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```
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配置文件新增：
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```properties
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# zipkin服务跟踪
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spring.zipkin.base-url=http://127.0.0.1:9411/
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# 设置sleuth收集信息的比率，默认0.1，最大是1，数字越大越耗性能
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spring.sleuth.sampler.probability=1
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# dubbo使用zipkin过滤器
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dubbo.provider.filter=tracing
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dubbo.consumer.filter=tracing
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```
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重启服务
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- 打开sop-book/sop-book-web/pom.xml
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步骤同上
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- 运行DubboDemoTest.java单元测试
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运行完毕看控制台，找到日志信息
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```text
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2019-07-18 16:22:04.438 INFO [story-service,59dae98250b276bd,60828035658f175f,true] 90553 --- [:12345-thread-2] c.g.s.s.service.DefaultDemoService : dubbo provider, param: DemoParam(id=222)
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```
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日志内容多了`[story-service,59dae98250b276bd,60828035658f175f,true]`部分，这些是zipkin加进去的，说明如下：
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```text
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story-service：服务名称
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59dae98250b276bd：traceId
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60828035658f175f：spanId
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true：是否上传到zipkin服务器
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```
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查看各个服务的控制台，可以发现traceId是一致的。
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- 浏览器打开：http://127.0.0.1:9411/
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将traceId复制黏贴到右上角文本框进行查询，可看到服务调用链。
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