OpenTelemetry 快速落地：Node 服务导出指标与 trace

npm i @opentelemetry/api @opentelemetry/sdk-node @opentelemetry/auto-instrumentations-node \
  @opentelemetry/exporter-metrics-otlp-http @opentelemetry/exporter-trace-otlp-http

const { NodeSDK } = require('@opentelemetry/sdk-node');
const { getNodeAutoInstrumentations } = require('@opentelemetry/auto-instrumentations-node');
const { OTLPMetricExporter } = require('@opentelemetry/exporter-metrics-otlp-http');
const { OTLPTraceExporter } = require('@opentelemetry/exporter-trace-otlp-http');

const sdk = new NodeSDK({
  traceExporter: new OTLPTraceExporter({ url: 'http://localhost:4318/v1/traces' }),
  metricExporter: new OTLPMetricExporter({ url: 'http://localhost:4318/v1/metrics' }),
  instrumentations: [getNodeAutoInstrumentations()]
});

sdk.start();