Set Severity

Overview

The Set Severity processor maps log values to OpenTelemetry severity levels and writes severity_number and severity_text.

This helps normalize inconsistent source severity formats into a common severity model for downstream analytics.

Supported types: Logs

Configuration

Parameter	Type	Default	Required	Description
field_type	string	—	Yes	Source field type: attribute, body, or resource.
field	string	—	Conditional	Required when field_type is attribute or resource.
match_type	string	exact	No	Matching mode: exact or regex.
only_if_unset	boolean	true	No	Only set severity if it is not already present.
mappings	array	—	Yes	Ordered list of { value, severity } mappings. First match wins.

Example Configuration

{
  "field_type": "attribute",
  "field": "level",
  "match_type": "exact",
  "only_if_unset": true,
  "mappings": [
    { "value": "debug", "severity": "DEBUG" },
    { "value": "info", "severity": "INFO" },
    { "value": "warn", "severity": "WARN" },
    { "value": "error", "severity": "ERROR" }
  ]
}