Prometheus receiver starts by default, even when not configured. How do I disable the prometheus receiver to stop collecting resource metrics?

[summahto]

Component(s)

exporter/prometheus, receiver/prometheus

Describe the issue you're reporting

I am running opentelemetry collector's latest version 0.95 through docker. Here is my docker-compose.yml for starting otel-collector:

services:
  otelcol:
    image: otel/opentelemetry-collector-contrib
    volumes:
      - ./otel-collector-config.yaml:/usr/src/app/otelcol-contrib/config.yaml
    ports:
      - "1888:1888" # pprof extension
      - "13133:13133" # health_check extension
      - "4317:4317" # OTLP gRPC receiver
      - "4318:4318" # OTLP http receiver
      - 55679:55679 # zpages extension

and here is my otel-collector-config.yaml:

 receivers:
  otlp:
    protocols:
      grpc:
        endpoint: 0.0.0.0:4317
      http:
        endpoint: 0.0.0.0:4318
exporters:
  # NOTE: Prior to v0.86.0 use `logging` instead of `debug`.
  debug:
    verbosity: basic
  # logging:
  #   loglevel: debug
  azuremonitor:
    connection_string: 
processors:
  batch:
extensions:
  health_check:
  pprof:
  zpages:
  # memory_ballast:
  #   size_mib: 512
service:
  extensions: [health_check, pprof, zpages]
  pipelines:
    traces:
      receivers: [otlp]
      exporters: [azuremonitor]
      processors: [batch]
    metrics:
      receivers: [otlp]
      exporters: [azuremonitor]
      processors: [batch]
    logs:
      receivers: [otlp]
      exporters: [azuremonitor]
      processors: [batch]
  telemetry:
    metrics:
      level: none

I am facing some issues with prometheus receiver, I have not configured in my receivers or in my services section. But, even then the it keeps scraping the collector metrics which completely fill up my console logs that I cannot view any other important trace, log which I exporting from my app to collector. Further, the frequency of it is also pretty small. I have attached the collector logs for your reference. Showing the small snippet which keeps generating. How can I configure my collector to run without prometheus receiver ?

maas-api-otelcol-1   | 2024-03-05T14:36:41.300Z info    prometheusreceiver@v0.95.0/metrics_receiver.go:282      Starting scrape manager {"kind": "receiver", "name": "prometheus", "data_type": "metrics"}
maas-api-otelcol-1   | 2024-03-05T14:36:52.544Z info    MetricsExporter {"kind": "exporter", "data_type": "metrics", "name": "debug", "resource metrics": 1, "metrics": 12, "data points": 12}
maas-api-otelcol-1   | 2024-03-05T14:36:52.544Z info    ResourceMetrics #0
maas-api-otelcol-1   | Resource SchemaURL: 
maas-api-otelcol-1   | Resource attributes:
maas-api-otelcol-1   |      -> service.name: Str(otel-collector)
maas-api-otelcol-1   |      -> service.instance.id: Str(0.0.0.0:8888)
maas-api-otelcol-1   |      -> net.host.port: Str(8888)
maas-api-otelcol-1   |      -> http.scheme: Str(http)
maas-api-otelcol-1   |      -> service_instance_id: Str(ddb95075-4288-4ad5-bd2e-452b3120915f)
maas-api-otelcol-1   |      -> service_name: Str(otelcol-contrib)
maas-api-otelcol-1   |      -> service_version: Str(0.95.0)
maas-api-otelcol-1   | ScopeMetrics #0
maas-api-otelcol-1   | ScopeMetrics SchemaURL: 
maas-api-otelcol-1   | InstrumentationScope otelcol/prometheusreceiver 0.95.0
maas-api-otelcol-1   | Metric #0
maas-api-otelcol-1   | Descriptor:
maas-api-otelcol-1   |      -> Name: otelcol_process_runtime_heap_alloc_bytes
maas-api-otelcol-1   |      -> Description: Bytes of allocated heap objects (see 'go doc runtime.MemStats.HeapAlloc')
maas-api-otelcol-1   |      -> Unit: 
maas-api-otelcol-1   |      -> DataType: Gauge
maas-api-otelcol-1   | NumberDataPoints #0
maas-api-otelcol-1   | Data point attributes:
maas-api-otelcol-1   |      -> service_instance_id: Str(ddb95075-4288-4ad5-bd2e-452b3120915f)
maas-api-otelcol-1   |      -> service_name: Str(otelcol-contrib)
maas-api-otelcol-1   |      -> service_version: Str(0.95.0)
maas-api-otelcol-1   | StartTimestamp: 1970-01-01 00:00:00 +0000 UTC
maas-api-otelcol-1   | Timestamp: 2024-03-05 14:36:52.35 +0000 UTC
maas-api-otelcol-1   | Value: 42193616.000000
maas-api-otelcol-1   | Metric #1
maas-api-otelcol-1   | Descriptor:
maas-api-otelcol-1   |      -> Name: otelcol_process_runtime_total_alloc_bytes
maas-api-otelcol-1   |      -> Description: Cumulative bytes allocated for heap objects (see 'go doc runtime.MemStats.TotalAlloc')
maas-api-otelcol-1   |      -> Unit: 
maas-api-otelcol-1   |      -> DataType: Sum
maas-api-otelcol-1   |      -> IsMonotonic: true
maas-api-otelcol-1   |      -> AggregationTemporality: Cumulative
maas-api-otelcol-1   | NumberDataPoints #0
maas-api-otelcol-1   | Data point attributes:
maas-api-otelcol-1   |      -> service_instance_id: Str(ddb95075-4288-4ad5-bd2e-452b3120915f)
maas-api-otelcol-1   |      -> service_name: Str(otelcol-contrib)
maas-api-otelcol-1   |      -> service_version: Str(0.95.0)
maas-api-otelcol-1   | StartTimestamp: 2024-03-05 14:36:52.35 +0000 UTC
maas-api-otelcol-1   | Timestamp: 2024-03-05 14:36:52.35 +0000 UTC
maas-api-otelcol-1   | Value: 48675096.000000
maas-api-otelcol-1   | Metric #2
maas-api-otelcol-1   | Descriptor:
maas-api-otelcol-1   |      -> Name: otelcol_process_uptime
maas-api-otelcol-1   |      -> Description: Uptime of the process
maas-api-otelcol-1   |      -> Unit: 
maas-api-otelcol-1   |      -> DataType: Sum
maas-api-otelcol-1   |      -> IsMonotonic: true
maas-api-otelcol-1   |      -> AggregationTemporality: Cumulative
maas-api-otelcol-1   | NumberDataPoints #0
[TooManyMetrics.txt](https://github.com/open-telemetry/opentelemetry-collector-contrib/files/14498366/TooManyMetrics.txt)

[github-actions]

Pinging code owners:

• exporter/prometheus: @Aneurysm9
• receiver/prometheus: @Aneurysm9 @dashpole

See Adding Labels via Comments if you do not have permissions to add labels yourself.

[dashpole]

I suspect the collector is using the default configuration, rather than your configuration.

The demo docker compose file has a command field:

opentelemetry-collector-contrib/examples/demo/docker-compose.yaml

Line 26 in f27143f

command: ["--config=/etc/otel-collector-config.yaml", "${OTELCOL_ARGS}"]

Maybe try adding that, and pointing it at your config volume?

[summahto]

Yes. That was the issue. Thanks for letting me know.