The Syslog Protocol
RFC 5424
Document | Type |
RFC - Proposed Standard
(March 2009; Errata)
Obsoletes RFC 3164
|
|
---|---|---|---|
Author | Rainer Gerhards | ||
Last updated | 2018-12-20 | ||
Stream | IETF | ||
Formats | plain text html pdf htmlized bibtex | ||
Reviews | |||
Stream | WG state | (None) | |
Document shepherd | No shepherd assigned | ||
IESG | IESG state | RFC 5424 (Proposed Standard) | |
Consensus Boilerplate | Unknown | ||
Telechat date | |||
Responsible AD | Sam Hartman | ||
Send notices to | (None) |
Network Working Group R. Gerhards Request for Comments: 5424 Adiscon GmbH Obsoletes: 3164 March 2009 Category: Standards Track The Syslog Protocol Status of This Memo This document specifies an Internet standards track protocol for the Internet community, and requests discussion and suggestions for improvements. Please refer to the current edition of the "Internet Official Protocol Standards" (STD 1) for the standardization state and status of this protocol. Distribution of this memo is unlimited. Copyright Notice Copyright (c) 2009 IETF Trust and the persons identified as the document authors. All rights reserved. This document is subject to BCP 78 and the IETF Trust's Legal Provisions Relating to IETF Documents in effect on the date of publication of this document (http://trustee.ietf.org/license-info). Please review these documents carefully, as they describe your rights and restrictions with respect to this document. This document may contain material from IETF Documents or IETF Contributions published or made publicly available before November 10, 2008. The person(s) controlling the copyright in some of this material may not have granted the IETF Trust the right to allow modifications of such material outside the IETF Standards Process. Without obtaining an adequate license from the person(s) controlling the copyright in such materials, this document may not be modified outside the IETF Standards Process, and derivative works of it may not be created outside the IETF Standards Process, except to format it for publication as an RFC or to translate it into languages other than English. Gerhards Standards Track [Page 1] RFC 5424 The Syslog Protocol March 2009 Abstract This document describes the syslog protocol, which is used to convey event notification messages. This protocol utilizes a layered architecture, which allows the use of any number of transport protocols for transmission of syslog messages. It also provides a message format that allows vendor-specific extensions to be provided in a structured way. This document has been written with the original design goals for traditional syslog in mind. The need for a new layered specification has arisen because standardization efforts for reliable and secure syslog extensions suffer from the lack of a Standards-Track and transport-independent RFC. Without this document, each other standard needs to define its own syslog packet format and transport mechanism, which over time will introduce subtle compatibility issues. This document tries to provide a foundation that syslog extensions can build on. This layered architecture approach also provides a solid basis that allows code to be written once for each syslog feature rather than once for each transport. This document obsoletes RFC 3164. Table of Contents 1. Introduction ....................................................4 2. Conventions Used in This Document ...............................4 3. Definitions .....................................................4 4. Basic Principles ................................................5 4.1. Example Deployment Scenarios ...............................6 5. Transport Layer Protocol ........................................7 5.1. Minimum Required Transport Mapping .........................7 6. Syslog Message Format ...........................................8 6.1. Message Length .............................................9 6.2. HEADER .....................................................9 6.2.1. PRI .................................................9 6.2.2. VERSION ............................................11 6.2.3. TIMESTAMP ..........................................11 6.2.4. HOSTNAME ...........................................13 6.2.5. APP-NAME ...........................................14 6.2.6. PROCID .............................................14 6.2.7. MSGID ..............................................14 6.3. STRUCTURED-DATA ...........................................15 6.3.1. SD-ELEMENT .........................................15 6.3.2. SD-ID ..............................................15 6.3.3. SD-PARAM ...........................................16 6.3.4. Change Control .....................................17 6.3.5. Examples ...........................................17 Gerhards Standards Track [Page 2] RFC 5424 The Syslog Protocol March 2009Show full document text