Prometheus Remote Write Exporter

The NVL telemetry component of the NMX-T application package provides active (push) data streaming through the Prometheus Remote Write Exporter.

The remote writer includes data filtering and transformation features similar to those of the Prometheus metrics endpoint.

You can set up the export configuration using any of the configuration options supported by NMX-T Telemetry Collection Configuration

The configuration parameters related to the Prometheus remote write are listed below. By default, the parameter values are empty strings, indicating that no export is enabled.

http://0.0.0.0:9090/api/v1/write

Here is a sample 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

• Prometheus server running with the remote write receiver enabled

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  docker run -p 9090:9090 prom/prometheus --config.file=/etc/prometheus/prometheus.yml \
      --storage.tsdb.path=/prometheus --web.console.libraries=/usr/share/prometheus/console_libraries \
      --web.console.templates=/usr/share/prometheus/consoles --web.enable-remote-write-receiver
          

Configuring the Remote Write Target

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

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  curl -s http://0.0.0.0:9350/telemetry/config --data-binary @- << EOF
  nvl_telemetry.remote_write.target = http://0.0.0.0:9090/api/v1/write
  nvl_telemetry.remote_write.counter_set = default
  nvl_telemetry.remote_write.field_set = default
  EOF
          

Verify the Data Received by Prometheus

• Use web interface to observe the data written to the Prometheus

  http://localhost:9090/graph?g0.expr=port_xmit_data&g0.tab=0&g0.display_mode=lines&g0.show_exemplars=0&g0.range_input=1m

• Query the metrics with API

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  curl -s http://localhost:9090/api/v1/query?query=port_xmit_data