[syslog-ng-announce] syslog-ng 3.3.0beta1 has been released

devel at balabit.hu devel at balabit.hu
Tue May 24 16:10:36 CEST 2011

PACKAGE             : syslog-ng
VERSION             : 3.3.0beta1
SUMMARY             : new stable release
DATE                : May 24, 2011


  A new stable version of syslog-ng Open Source Edition (3.3.0beta1) has been
  released. For latest fixes in the 3.3.x branch you are recommended to
  upgrade to this version.


	Fri, 13 May 2011 13:17:12 +0200


	This release marks the feature freeze for the upcoming 3.3 version
	of syslog-ng, development continues on the newly opened 3.4 branch,
	while this one only receives bugfixes in the future.

	* db-parser() has a new option called inject-mode() that can be used
	  to specify where synthetic messages generated by syslog-ng itself
          should be injected. In 3.2 these appeared in the internal()
	  source, in 3.3 they'll be generated from within db-parser().

	* "pdbtool patternize": added --no-parse option

	* Make the number of retries runtime configurable in case an INSERT
	  is rejected by the database using the new retry-sql-inserts()

	* Added support for using the "default" value for columns, by
	  specifying "default" as the column value. This can be used for
	  auto-incrementing fields.

	* Explicit commits were adapted to use the proper BEGIN TRANSACTION
	  command on MS SQL and Oracle.

	* Oracle doesn't like overly long index names, and since this limit
	  was easily reached by syslog-ng, use md5 to compress the index

	* Removed the defaults for columns(), values() and indexes() as it's
	  almost impossible to come up with a set of defaults that works on
	  all databases.

	* DBI initialization errors are reported earlier, during startup, to
	  make their detection easier.

	* The owner(), group(), perm(), dir_owner(), dir_group() and
	  dir_perm() can be specified without an argument which tells
	  syslog-ng to avoid changing file permissions even if the globals
	  are set.

	* The name of the collection was changed to be a simple string,
	  instead of a template, to make implementing bulk inserts much

        * Added support for the value-pairs() option, that makes it trivial
          to add fields to records dynamically.

	* A new module named tfjson was created which implements a
	  $(format-json) template function, capable of exporting the
	  syslog-ng message model as a properly marked up JSON object.

	* The plugin supports both json-c and json-glib as backend

	Performance changes:
	* The LogQueue component was restructured for better scalability.
	  This component is responsible to connect source and destination
	  drivers as they work in separate threads, and as such it plays an
	  important role in influencing the overall performance of syslog-ng.

	* Added support for reading files in multi-threaded mode (each
	  thread sending a copy of that file, instead of mixing lines).

	* Added support for IPv6.

	Other changes:
	* The list of plugins loaded by default became build-time
	  configurable using the --default-modules configure switch. The
   	  same command line option can be used to override the same at

	* --version now includes information on the list of available
	  modules, and --module-registry displays even more information on
	  every loadable module.

	* Introduced another plugin possibility, inner-source and inner-dest
	  plugin types allow the extension any kind of source or destination

	* Use the newly introduced "cap-syslog" capability with kernels

	Build changes:
	* A new shared library was introduced named libsyslog-ng-crypto.so
	  that contains all crypto related code shared between plugins.

	* Added pkg-config files to be used in -dev packages in order to
	  make it possible to build external modules.

	* "make uninstall" now properly uninstalls config files and SCL.
	  Note that it removes everything without checking that they were
	  changed locally.

	* The program destination caused a segmentation fault during
	  startup, this was fixed.

	* Fixed syslog() style framing over TLS or tcp, which caused the
	  syslog-ng server to shut connections down prematurely.

	* Fixed syslog() client code, which may cause invalid framing to be
	  emitted on contended network connections.

	* Fixed a possibly failed assert in the flow control code in
	  reaction to a broken source connection.

	* Fixed processing flush_timeout() for destinations, in earlier
	  alpha versions flush_timeout() never expired.

	* Some platforms return EINVAL for writev() calls with zero I/O
	  buffers, causing file output to fail. Make sure syslog-ng never
	  generates such calls.

	* Fixed read behaviour for special files (like /proc/kmsg on
	  Linux, /dev/klog for FreeBSD), as epoll/kqueue is unable to handle

	* Fixed write behaviour for special files (like /dev/console) as
	  epoll/kqueue must be used even though syslog-ng doesn't use those
	  for regular files.

	* Fixed a premature connection closure when the destination is
	  unable to accept data (e.g. EAGAIN is returned from send()). This
	  was easily reproduced by enabling SSL, as SSL is reporting the
	  same condition when the negotiation is running and the client is
	  expecting the response from a server.

	* Fixed a 100% CPU usage case in the SSL server case.

	* Fixed a possible segmentation fault during runtime (use-after-free
	  problem which could cause segfaults).

	* Fixed a segmentation fault at exit when the tcp() destination
	  couldn't connect to the server.

	* Don't attempt to remember the file position for files that are
	  read using follow-freq(0), e.g. /dev/klog, /proc/kmsg and similar

	* Fixed a db-parser() correllation bug, sometimes timers were not
	  expired as they should have. [3.2 port]

	* Accept three forms of the catch-all log statement flag: catch-all,
	  catchall and catch_all since the documentation was wrong and it
	  differed from the actual implementation for ages.

	* PCRE: fixed a potential resource hog triggered by PCRE 8.12 and
	  "global" replacements.

	* loggen: make sure loggen sends out all data by calling shutdown()
	  on the output socket.

	* loggen: handle SIGPIPE signals which caused loggen to exit
	  prematurely when connections broke.

	* loggen: fixed a potential division by zero when reporting the
	  message rate for unsuccessful connections.

	* Fixed a number of compilation warnings triggered by gcc 4.6


	syslog-ng is developed as a community project, and as such it relies
        on volunteers, to do the work necessarily to produce syslog-ng.

        Reporting bugs, testing changes, writing code or simply providing
        feedback are all important contributions, so please if you are a
        user of syslog-ng, contribute.

        These people have helped in this release:

	  * Martin Holste
	  * Balazs Scheidler (BalaBit)
	  * Gergely Nagy (BalaBit)
	  * Andy Ruch
	  * Peter Czanik (BalaBit)
	  * Viktor Juhasz (BalaBit)
	  * Attila Nagy (BalaBit)
	  * Andras Miczki (BalaBit)
	  * György Fischhof (BalaBit)
	  * Tamás Pál (BalaBit)
	  * Bálint Kovács (BalaBit)
	  * Hendrik Visage
	  * Peter Gyöngyösi (BalaBit)
	  * Mishou Michael (IRS)
	  * Matthew Hall
	  * Sándor Gellér (Morgan Stanley)
	  * Micah Anderson
	  * Jose Oliveira (Fedora)
	  * Serge Hallyn (Ubuntu)


  You can download the source or binary packages from:


  The documentation of the syslog-ng Open Source Edition is available in
  The syslog-ng Open Source Edition Administrator's Guide at


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