Filtering Tracing on v0.109.0

[baikunthasahoo]

Component(s)

processor/filter

Describe the issue you're reporting

Hi Team,

I am trying to exclude spans in the OpenTelemetry Collector using the filterprocessor. Specifically, I need to exclude spans where the next.route attribute matches the following values:

/api/healthz /[locale]/api/healthz (where [locale] is dynamic, e.g., /en, /fr, etc.) Despite configuring the filterprocessor with a regular expression, I am still seeing these spans in the traces. Below are the steps, configurations, and behaviors observed.

filter/exclude-health-api-traces: spans: exclude: match_type: regexp attributes:

• key: "http.target" value: ".\/api\/healthz."

• key: "http.target" value: ".\/api\/healthz."

• key: "http.url" value: "http:\/\/\d+\.\d+\.\d+\.\d+:3000\/(view|file|cloud|api)\/api\/healthz"

• key: "http.user_agent" value: ".kube-probe\/1\.."

• key: "next.route" value: "(\/[^\/]+)?\/api\/healthz"

  filter/spans: spans: exclude: match_type: regexp span_names:

• ".\/api\/healthz."

• ".\/api\/health\/."

I need your support on above query

Note: I have deployed my application in Kubernetes and used health probes for every 10sc. my application send data to collector as daemonset from otel collector i am exporting my traces.

[github-actions[bot]]

Pinging code owners:

• processor/filter: @TylerHelmuth @boostchicken

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[bacherfl]

Hi @baikunthasahoo!

Can you check whether something like the following config may help you to achieve this? This makes use of the IsMatch OTTL function:

receivers:
  otlp:
    protocols:
      grpc:
        endpoint: 0.0.0.0:4317
processors:
  filter:
    traces:
      span:
        - 'IsMatch(attributes["http.target"], ".*\\/api\\/healthz.*")'

exporters:
  debug:
    verbosity: detailed

service:

  pipelines:
    traces:
      receivers: [otlp]
      processors: [filter]
      exporters: [debug]

With this config, the following span was filtered as expected:

telemetrygen traces --otlp-insecure --traces 1 --status-code Ok --span-duration 1s --telemetry-attributes http.target=\"/api/healthz\"

[baikunthasahoo]

@bacherfl

Thanks for your quick support. Here i want suppress the /api/healthz noise. Does above example will suppress the ./api/healthz. ?

[bacherfl]

Yes, this configuration will filter out all spans with the http.target attribute set to /api/healthz