Trying the get sFlow-Metrics and sFlow-Analyzer working.

[Shawn]

Hey guys! 

I got a pair of Dell EMC 4128f switches configured with sFlow to to push metrics out to a Windows Server (10.190.0.35 ) running sFlow-RT, Grafana and Prometheus.

I could not get sFlow-Metrics and sFlow-Analyzer to work with the dashboards in Grafana.

Dashboard used are the following,

https://grafana.com/grafana/dashboards/11096-sflow-rt-health/

https://grafana.com/grafana/dashboards/11201-sflow-rt-network-interfaces/

My settings in prometheus.yml are as follows,

  - job_name: 'sflow-rt-analyzer'
    metrics_path: /prometheus/analyzer/txt
    static_configs:
      - targets: ['10.190.0.35:8008']
     
  - job_name: 'sflow-rt-metrics'
    metrics_path: /prometheus/metrics/ALL/ALL/txt
    static_configs:
      - targets: ['10.190.0.35:8008']
    metric_relabel_configs:
      - source_labels: ['agent', 'datasource']
        separator: ':'
        target_label: instance

Here is my output on Prometheus.

Any help will be much appreciated!

Regards,

Shawn

[Peter Phaal]

Thanks for raising this issue. sFlow-RT is primarily run on Linux where the default line end convention matches the format required for Prometheus exporters (each text line terminated by a newline character). However, on Windows the default line end convention is carriage return followed by newline. It appears that Prometheus is trying to parse the number plus carriage return character and failing.

We have uploaded a new version of sFlow-RT (version 3.1-1714) that explicitly sets the end of line character when exporting for Prometheus. This should now run correctly on Windows platforms. Please download and confirm that this fixes your issue.

Thanks,

Peter

[Shawn]

Hi Peter,

Thanks for the quick update! Updated sFlow-RT to version 3.1-1714. 

And I got the dashboards working in Grafana now after Prometheus went green.

Cheers!

Regards,

Shawn