Open Telemetry Exporter

The NVL telemetry component of the NMX-T application package provides active (push) data streaming using the Open Telemetry exporter. The OTLP exporter adopts the same data filtering and transformation methods as the Prometheus Remote Writer and the Prometheus metrics endpoint. To set up the export configuration, use any of the configuration options supported by NMX-T, such as the Telemetry Collection Configuration. The configuration parameters related to the OTLP exporter are listed below. By default, these parameters are set to empty strings, indicating that no export is enabled.

Here is an example of the data exporting with Prometheus Remote Write.

Prerequisites

• NMX-T is up and running on the system, either as NVOS Cluster Application, standalone containerized application or native, as described in Application Lifecycle

• Create an OpenTelemetry configuration https://github.com/open-telemetry/opentelemetry-collector-contrib/blob/main/exporter/prometheusexporter/README.md

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  receivers:
    otlp:
      protocols:
        grpc:
          endpoint: 0.0.0.0:9501
        http:
          endpoint: 0.0.0.0:9502
  exporters:
    debug:
      verbosity: detailed
    prometheus:
      endpoint: 0.0.0.0:9503"
      send_timestamps: true
      metric_expiration: 180m
      enable_open_metrics: true
      add_metric_suffixes: false
      resource_to_telemetry_conversion:
        enabled: true
   
  service:
    pipelines:
      traces:
        receivers: [otlp]
        exporters: [debug]
      metrics:
        receivers: [otlp]
        exporters: [debug]
      logs:
        receivers: [otlp]
        exporters: [debug]
          

• Start the Open Telemetry receiver to run

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  docker run --rm --name "$(whoami)_open_telemetry" \
      -p 9501:9501 -p 9502:9502 \
      -v $(pwd)/data:/data -v $(pwd)/collector-config.yaml:/etc/otelcol/config.yaml otel/opentelemetry-collector
          

Configuring the Open Telemetry Metrics Target

• Update nvl_telemetry.otlp.target parameter via configuration interface Telemetry Collection Configuration to start streaming the telemetry out to the given target.

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  curl http://0.0.0.0:9350/telemetry/config --data-binary @- << EOF
  nvl_telemetry.otlp.target = http://0.0.0.0:9502/v1/metrics
  nvl_telemetry.otlp.counter_set = default
  nvl_telemetry.otlp.field_set = default
  EOF