Documentationbreadcrumb arrow Beylabreadcrumb arrow Configurebreadcrumb arrow Filter data
Open source

Filter metrics and traces by attribute values

You might want to restrict the reported metrics and traces to very concrete event types based on the values of the attributes (for example, filter network metrics to report only TCP traffic).

The filter YAML section allows filtering both application and network metrics by attribute values. It has the following structure:

YAML 
filter:
  application:
    # map of attribute matches to restrict application metrics
  network:
    # map of attribute matches to restrict network metrics

For a list of metrics under the application and network family, as well as their attributes, check the Beyla exported metrics document.

Each application and network filter section is a map where each key is an attribute name (either in Prometheus or OpenTelemetry format), with either the match or the not_match property. Both properties accept a glob-like string (it can be a full value or include wildcards). If you set the match property, Beyla only reports the metrics and traces matching the provided value for that given attribute. The not_match property is the negation of match.

The following example reports network metrics for connections targeting the destination port 53, excluding the UDP protocol:

YAML 
filter:
  network:
    transport:
      not_match: UDP
    dst_port:
      match: "53"