Don't receive or visualize metrics in Grafana/Prometheus

[LuiFerPereira]

Hi,
I'm trying a scenario to push metrics from opentelemetry but it's not working. Can you help me? please.

My configurations are:

1. Start image downloaded from Docker Hub

2. After, I'm configured the OTLP Exported from opentelemetry:

Note: The GRAFANA_AGENT_URL is: 'http://localhost:4318'

import {getNodeAutoInstrumentations} from '@opentelemetry/auto-instrumentations-node';
import {BatchSpanProcessor} from '@opentelemetry/sdk-trace-base';
import {NodeSDK} from '@opentelemetry/sdk-node';
import {OTLPTraceExporter} from '@opentelemetry/exporter-trace-otlp-grpc';
import {OTLPMetricExporter} from '@opentelemetry/exporter-metrics-otlp-http';
import {Resource} from '@opentelemetry/resources';
import {ATTR_SERVICE_NAME} from '@opentelemetry/semantic-conventions';
import {
  //ConsoleMetricExporter,
  PeriodicExportingMetricReader,
} from '@opentelemetry/sdk-metrics';
import {diag, DiagConsoleLogger, DiagLogLevel} from '@opentelemetry/api';

diag.setLogger(new DiagConsoleLogger(), DiagLogLevel.DEBUG);

const traceExporter = new OTLPTraceExporter({
  url: process.env.GRAFANA_AGENT_URL,
});

const metricOTLPReader = new PeriodicExportingMetricReader({
  exporter: new OTLPMetricExporter({
    url: process.env.GRAFANA_AGENT_URL,
  }),
  exportIntervalMillis: 10000, // Set to 10 seconds for demonstrative purposes only, don't use this in production
});

/*const metricConsolePReader = new PeriodicExportingMetricReader({
  exporter: new ConsoleMetricExporter(),
  exportIntervalMillis: 1000,
});*/

const sdk = new NodeSDK({
  traceExporter,
  metricReader: metricOTLPReader,
  resource: new Resource({
    [ATTR_SERVICE_NAME]: process.env.SERVICE_NAME,
  }),
  spanProcessors: [new BatchSpanProcessor(traceExporter)],
  instrumentations: [
    getNodeAutoInstrumentations({
      '@opentelemetry/instrumentation-fs': {enabled: false},
      '@opentelemetry/instrumentation-grpc': {enabled: true},
      '@opentelemetry/instrumentation-pg': {enabled: false},
      '@opentelemetry/instrumentation-express': {enabled: false},
      '@opentelemetry/instrumentation-dns': {enabled: false},
      '@opentelemetry/instrumentation-net': {enabled: false},
      '@opentelemetry/instrumentation-nestjs-core': {enabled: false},
      '@opentelemetry/instrumentation-aws-lambda': {enabled: false},
      '@opentelemetry/instrumentation-http': {
        enabled: false,
        ignoreIncomingRequestHook: (req): boolean => {
          return req.url === '/health';
        },
      },
    }),
  ],
});

process.on('SIGTERM', () => {
  void sdk.shutdown();
});

export default sdk;

4. When starting the micro-services, I'm initialize the sdk:

async function bootstrap() {
  sdk.start();
  ....

5. From a controller, I'm creating a counter and increasing value each request:

const filterRequestsCounter = getMeter().createCounter(
  `filter_requests_total`,
  {
    description: 'Total number of filter requests',
    unit: 'req',
  }
);
....
filterRequestsCounter.add(1);

In Grafana or Prometheus never I visualized the metric: filter_requests_total
*Grafana

• Prometheus:
  

It's not working. What am I doing wrong?

[zeitlinger]

Please check the following:

• do you see data using the console exporter? use ConsoleMetricExporter
• do you see data using the debug exporter? https://github.com/open-telemetry/opentelemetry-collector/blob/main/exporter/debugexporter/README.md