OpenTelemetry Lambda扩展启动失败，报错‘otelcol state is Closed’求助

错误日志 #

{"level":"info","ts":1742934396.4294243,"logger":"telemetryAPI.Client","msg":"Subscribing","baseURL":"http://127.0.0.1:9001/2022-07-01/telemetry"}
{"time":"2025-03-25T20:26:36.430Z","type":"platform.telemetrySubscription","record":{"name":"collector","state":"Already subscribed","types":["platform"]}}
{"level":"info","ts":1742934396.4304833,"logger":"telemetryAPI.Client","msg":"Subscription success","response":"\"AlreadySubscribed\""}
{"level":"info","ts":1742934396.4305956,"logger":"NewCollector","msg":"Using config URI from environment variable","uri":"/var/task/collector.yaml"}
{"level":"warn","ts":1742934396.4449484,"logger":"lifecycle.manager","msg":"Failed to start the extension","error":"unable to start, otelcol state is Closed"}

配置详情 #

• Lambda运行时：Node.js 20
• OTel Layer：AWS官方OpenTelemetry Lambda Layer
• collector.yaml（放置于项目根目录）：

receivers:
  otlp:
    protocols:
      grpc:
        endpoint: "localhost:4317"
      http:
        endpoint: "localhost:4318"

exporters:
  logging:
    loglevel: debug
  opensearch:
    endpoint: "https://<endpoint>"
    region: "us-east-2"
    index: "metrics-otel-v1-%{yyyy.MM.dd}"
    insecure: true
    username: "<username>"
    password: "<passowwrd>"

service:
  pipelines:
    traces:
      receivers: [otlp]
      exporters: [awsxray]
    metrics:
      receivers: [otlp]
      exporters: [logging]
  telemetry:
    metrics:
      receivers: [otlp]
      exporters: [logging, opensearch]

• 环境变量（已弃用config_file，改用config_uri）：

OPENTELEMETRY_COLLECTOR_CONFIG_URI=/var/task/collector.yaml
OTEL_LOG_LEVEL=DEBUG

Lambda函数代码（POC） #

import { APIGatewayEvent, APIGatewayProxyResult } from "aws-lambda";

interface Sample {
  name: string;
}

export const handler = async (
  event: APIGatewayEvent
): Promise<APIGatewayProxyResult> => {
  try {
    const body: Sample = JSON.parse(event.body || "{}");

    if (!body.name) {
      return {
        statusCode: 400,
        body: JSON.stringify({ message: "Missing 'name' in the request body." }),
      };
    }

    return {
      statusCode: 202,
      body: JSON.stringify({ message: "Accepted" }),
    };
  } catch (error) {
    console.error("Error processing the request:", error);
    return {
      statusCode: 500,
      body: JSON.stringify({ message: "Internal Server Error" }),
    };
  }
};

问题现象 #

配置完成后，OTel扩展启动失败，报错unable to start, otelcol state is Closed，同时指标无法发送到OpenSearch。

已尝试操作 #

将配置中的localhost替换为0.0.0.0，问题未解决。

内容的提问来源于stack exchange，提问作者Max Bojorquez