opentelemetry-java-instrumentation/instrumentation/log4j/log4j-context-data/log4j-context-data-2.17/javaagent/README.md

Settings for the Log4j MDC instrumentation

System property	Type	Default	Description
otel.instrumentation.log4j-context-data.add-baggage	Boolean	false	Enable exposing baggage attributes through MDC.
otel.instrumentation.common.mdc.resource-attributes	String		Comma separated list of resource attributes to expose through MDC.
otel.instrumentation.common.logging.trace-id	String	trace_id	Customize MDC key name for the trace id.
otel.instrumentation.common.logging.span-id	String	span_id	Customize MDC key name for the span id.
otel.instrumentation.common.logging.trace-flags	String	trace_flags	Customize MDC key name for the trace flags.