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README
MulanPSL-2.0

opentelemetry-loki-tempo-grafana-demo

介绍

集成 opentelemetry分布式日志追踪; loki 日志收集;tempo 日志追踪后端; grafana 图表大盘UI ;grpc 测试demo

效果

登录页面

登录

数据源页面

数据源

Loki 日志查询页面

日志查询

Tempo 日志追踪查询页面

日志追踪

Tempo 节点拓扑关系图

节点拓扑关系图

Loki Tempo 双向关联界面

双相关联

组件说明

  • Grafana 是一款采用 go 语言编写的开源应用,是一个跨平台的开源的度量分析和可视化工具。
  • Tempo 一个开源的、易于使用的、大规模的分布式跟踪服务端,支持常见的开源跟踪协议,包括 Jaeger、Zipkin 和 Open Telemetry。
  • Loki Loki 是一个受 Prometheus 启发的水平可扩展、高可用、多租户日志聚合系统(比Elastic简单,不索引日志内容)。
  • Prometheus 一个监控系统,包括一个丰富的多维数据模型、一个名为Prom QL的简洁而强大的查询语言、一个高效的嵌入式时间序列数据库,丰富的插件支持。
  • OpenTelemetry 一个简单的、高度可扩展的、高性能的日志追踪框架(准确来说是标准协议,本身不提供存储,需要其他组件支持比如 Loki、Jaeger、 Prometheus、SkyWalking等)。
  • opentelemetry-java-instrumentation Java 版本的 OpenTelemetry Agent,低侵入,可以自动采集调用数据。
  • loki4j 支持Java日志系统Logback配置,直接将日志推送到 Loki

软件架构

软件架构

使用说明

启动组件服务

为了方便演示,组件使用了 docker-compose 方式启动。

克隆本项目 git clone git@gitee.com:sdvdxl/opentelemetry-loki-tempo-grafana-demo.git

cd opentelemetry-loki-tempo-grafana-demo
docker-compose up -d

启动java程序

cd java-demo
./mvnw clean package -Dmaven.test.skip=true 
 java -javaagent:../opentelemetry/opentelemetry-javaagent.jar -Dotel.service.name=loki-demo -jar target/leaning-opentelemetry-0.0.1-SNAPSHOT.jar

启动后,在命令行中访问:

curl -v localhost:12315/hello

为了测试异常信息,偶数次访问会抛出异常

如图所示,可以看到返回了traceID(注意该头部信息返回需要在程序里配置,参见 java-demo/src/main/java/top/todu/leaning/opentelemetry_loki/config/TraceFilter.java访问效果

打开浏览器,直接打开 loki 日志查询页面,输入用户名: admin 密码:foobar 应该是这么个界面 loki日志查询界面 分为3部分

  1. 查询条件
  2. 日志量统计
  3. 日志列表,点击每个日志可以展开

点击 trace 按钮,会打开右侧,展示追踪详情。 trace

同时,右侧追踪详情里面也可以点击进行查询相关日志。注意,因为日志采集时间和查询时间略有误差,会导致点击查看日志后没有数据,手动更改时间范围即可。 更改时间范围

配置

默认日志和追踪信息都发送到了本地,如果要发送到其他地址,参考如下配置

-Dotel.exporter.otlp.endpoint=http://10.1.1.100:4317 -Dotel.exporter.otlp.traces.endpoint=http://10.1.1.100:4317  -Dotel.exporter.otlp.metrics.endpoint=http://10.1.1.100:4317 -Dotel.exporter.otlp.logs.endpoint=http://10.1.1.100:4317 -javaagent:../opentelemetry/opentelemetry-javaagent.jar -Dotel.service.name=loki-demo -jar target/leaning-opentelemetry-0.0.1-SNAPSHOT.jar --log.push.url=http://10.1.1.100:3100/loki/api/v1/push

loki 地址

--log.push.url=http://10.1.1.100:3100/loki/api/v1/push

tempo 地址

-Dotel.exporter.otlp.endpoint=http://10.1.1.100:4317
-Dotel.exporter.otlp.traces.endpoint=http://10.1.1.100:4317 
-Dotel.exporter.otlp.metrics.endpoint=http://10.1.1.100:4317
-Dotel.exporter.otlp.logs.endpoint=http://10.1.1.100:4317 

最后

本项目只是作为快速了解这套框架的使用和了解,暂不进行深入介绍。

已知问题

  1. grpc server 端直接抛出异常,不会有traceID,但是使用 responseObserver.onError 方式是正常的(服务端不会打印异常信息,需要自行日志记录)
  2. JAVA 日志推送时间和trace时间有误差
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简介

集成 opentelemetry分布式日志追踪; loki 日志收集;tempo 日志追踪后端; grafana 图表大盘UI ;grpc 测试demo 展开 收起
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MulanPSL-2.0
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