ParseSyslog5424 2025.10.9.21

Bundle

org.apache.nifi | nifi-standard-nar

Description

Attempts to parse the contents of a well formed Syslog message in accordance to RFC5424 format and adds attributes to the FlowFile for each of the parts of the Syslog message, including Structured Data. Structured Data will be written to attributes as one attribute per item id + parameter see https://tools.ietf.org/html/rfc5424.Note: ParseSyslog5424 follows the specification more closely than ParseSyslog. If your Syslog producer does not follow the spec closely, with regards to using ‘-’ for missing header entries for example, those logs will fail with this parser, where they would not fail with ParseSyslog.

Tags

attributes, event, logs, message, syslog, syslog5424, system

Input Requirement

REQUIRED

Supports Sensitive Dynamic Properties

false

Properties

PropertyDescription
Character SetSpecifies which character set of the Syslog messages
include_policyIf true, then the Syslog Message body will be included in the attributes.
nil_policyDefines how NIL values are handled for header fields.

Relationships

NameDescription
failureAny FlowFile that could not be parsed as a Syslog message will be transferred to this Relationship without any attributes being added
successAny FlowFile that is successfully parsed as a Syslog message will be to this Relationship.

Writes attributes

NameDescription
syslog.priorityThe priority of the Syslog message.
syslog.severityThe severity of the Syslog message derived from the priority.
syslog.facilityThe facility of the Syslog message derived from the priority.
syslog.versionThe optional version from the Syslog message.
syslog.timestampThe timestamp of the Syslog message.
syslog.hostnameThe hostname or IP address of the Syslog message.
syslog.appnameThe appname of the Syslog message.
syslog.procidThe procid of the Syslog message.
syslog.messageidThe messageid the Syslog message.
syslog.structuredDataMultiple entries per structuredData of the Syslog message.
syslog.senderThe hostname of the Syslog server that sent the message.
syslog.bodyThe body of the Syslog message, everything after the hostname.

See also