Logging to Elastic Agent and logs are showing in unknown_service_node instead of services

[dileep9490]

• This only affects the JavaScript OpenTelemetry library
• This may affect other libraries, but I would like to get opinions here first

I'm working with nodeSDK and pushing the data to otel-collector which will push the data to elastic agent

this is my tracker.js file

import { NodeSDK } from "@opentelemetry/sdk-node";
import { getNodeAutoInstrumentations } from "@opentelemetry/auto-instrumentations-node";
import { OTLPLogExporter } from "@opentelemetry/exporter-logs-otlp-http";
import {
	LoggerProvider,
	BatchLogRecordProcessor,
} from "@opentelemetry/sdk-logs";
import { OTLPTraceExporter } from "@opentelemetry/exporter-trace-otlp-http";
import { OTLPMetricExporter } from "@opentelemetry/exporter-metrics-otlp-http";
import { PeriodicExportingMetricReader } from "@opentelemetry/sdk-metrics";

const traceExporter = new OTLPTraceExporter({
	url: "http://localhost:4318/v1/traces",
});

const metricExporter = new OTLPMetricExporter({
	url: "http://localhost:4318/v1/metrics",
});

const sdk = new NodeSDK({
	serviceName: "App 1",
	traceExporter: traceExporter,
	metricReader: new PeriodicExportingMetricReader({
		exporter: metricExporter,
	}),
	instrumentations: [getNodeAutoInstrumentations()],
});

sdk.start();

const logExporter = new OTLPLogExporter({
	url: "http://localhost:4318/v1/logs",
});
const loggerProvider = new LoggerProvider({});

loggerProvider.addLogRecordProcessor(new BatchLogRecordProcessor(logExporter));

const logger = loggerProvider.getLogger("default", "1.0.0");

export { logger };

I have 2 apps pushing to one collector and then it pushes to single elastic agent. When metrics are pushed I can see them in their appropriate services but logs are being pushed to unknow_service_node service. I want the logs in their respective services how can i do that?

[dileep9490]

Found the solution:

By create a resource like this:

import { SEMRESATTRS_SERVICE_NAME } from "@opentelemetry/semantic-conventions";

const resource = Resource.default().merge(
	new Resource({
		[SEMRESATTRS_SERVICE_NAME]: "App 1",
	})
);

passing this to my loggers and Nodesdk worked