OpenTelemetry Nodejs -将收集器连接到工具

Question

我正在尝试为Lightstep https://lightstep.com/blog/opentelemetry-nodejs/中的Hello world示例设置跟踪安装

const express = require("express");

const PORT = process.env.PORT || "8080";
const app = express();

app.get("/", (req, res) => {
  res.send("Hello World");
});

app.listen(parseInt(PORT, 10), () => {
  console.log(`Listening for requests on http://localhost:${PORT}`);
});

我的tracing.js如下所示：

'use strict';

const opentelemetry = require('@opentelemetry/api');
const { NodeTracerProvider } = require('@opentelemetry/node');
const { BatchSpanProcessor } = require("@opentelemetry/tracing");
const { CollectorTraceExporter } = require('@opentelemetry/exporter-collector');
const { registerInstrumentations } = require('@opentelemetry/instrumentation');
const { autoinstrumentationsnode } = require('@opentelemetry/auto-instrumentations-node');

module.exports = () => {
 const provider = new NodeTracerProvider();

 const exporterOptions = {
  serviceName: "my-service-name",
  url: "http://localhost:4317",
 }


 const exporter = new CollectorTraceExporter(exporterOptions);
 provider.addSpanProcessor(new BatchSpanProcessor(exporter));
 provider.register();

 registerInstrumentations({
  instrumentations: [
    new autoinstrumentationsnode(),
  ],
 })
 return opentelemetry.trace.getTracer("instrumentation-example");
}

我的收集器正在监听localhost:4317，配置文件如下：

receivers:
  otlp:
    protocols:
      grpc:
        endpoint: "localhost:4317"

exporters:
  logzio:
    account_token: token

processors:
  batch:

extensions:
  pprof:
    endpoint: :1777
  zpages:
    endpoint: :55679
  health_check:

service:
  extensions: [health_check, pprof, zpages]
  pipelines:
    traces:
      receivers: [otlp]
      processors: [batch]
      exporters: [logzio]

我运行的是otelcontribcol_darwin_amd64版本23。它会把跟踪信息发送到我的logz.io账户。它适用于Java和Python应用程序。

我被node.js卡住了。终端显示节点在localhost:8080上运行，但它不会向任何地方发送任何跟踪。当我将输出更改为console时，它确实显示了跟踪。所以问题出在收集器和插装之间的通信中。

你能告诉我我可以试着解决这个问题吗？

非常感谢！

Answer 1

你在哪里找到收集器url http://localhost:4317的？这是不正确的配置。截至今天，端口4317为grpc保留，55681端口为http保留。当您使用http发送遥测时，您应该按照建议的here为每个信号(跟踪/度量/日志)配置您的url。用http://localhost:55681/v1/traces更新你的收集器url应该可以解决这个问题。

Answer 2

谢谢你Srikanth！我已经为收集器尝试了这个配置：

receivers:
  otlp:
    protocols:
      http:
        endpoint: localhost:55681

exporters:
  logzio:
    account_token: token


processors:
  batch:

extensions:
  pprof:
    endpoint: :1777
  zpages:
    endpoint: :55679
  health_check:

service:
  extensions: [health_check, pprof, zpages]
  pipelines:
    traces:
      receivers: [otlp]
      processors: [batch]
      exporters: [logzio]

追踪器是这样的：

'use strict';

const opentelemetry = require('@opentelemetry/api');
const { NodeTracerProvider } = require('@opentelemetry/node');
const { BatchSpanProcessor } = require("@opentelemetry/tracing");
const { CollectorTraceExporter } = require('@opentelemetry/exporter-collector');
const { registerInstrumentations } = require('@opentelemetry/instrumentation');
const { HttpInstrumentation } = require('@opentelemetry/instrumentation-http');

module.exports = () => {
 const provider = new NodeTracerProvider();

 const exporterOptions = {
  serviceName: "my-service-name",
  url: "http://localhost:55681/v1/traces",
 }


 const exporter = new CollectorTraceExporter(exporterOptions);
 provider.addSpanProcessor(new BatchSpanProcessor(exporter));
 provider.register();

 registerInstrumentations({
  instrumentations: [
    new HttpInstrumentation(),
  ],
 })
 return opentelemetry.trace.getTracer("instrumentation-example");
}

不幸的是，它仍然不能工作。

我尝试将"v1/traces“添加到

receivers:
  otlp:
    protocols:
      http:
        endpoint: localhost:55681/v1/traces

但收集器随后拒绝运行，因为它无法识别端点格式。

Answer 3

请检查示例，该示例应始终是最新的https://github.com/open-telemetry/opentelemetry-js/tree/main/examples/collector-exporter-node

首先，我可以看到在您的配置中定义“端点”是不必要的。您也可以跳过"exporterOptions“中的"url”参数，以便使用默认值。

请尝试使用收集器的最新版本，我一直在使用"otel/opentelemetry- collector :0.30.0“，它对我来说工作得很好。