Core fields

The following fields are used by core.

$raw_event (type: string): The data received from stream modules (im_file, im_tcp, etc.).

$EventReceivedTime (type: datetime): The time when the event is received. The value is not modified if the field already exists.

$Hostname (type: string): The name of the host where the nxlog is running. The value is not modified if the field already exists.

$SourceModuleName (type: string): The name of the module instance, for input modules. The value is not modified if the field already exists.

$SourceModuleType (type: string): The type of module instance (such as im_file), for input modules. The value is not modified if the field already exists.