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Diffstat (limited to 'ChangeLog')
| -rw-r--r-- | ChangeLog | 280 |
1 files changed, 280 insertions, 0 deletions
@@ -1,4 +1,281 @@ --------------------------------------------------------------------------- +Version 4.5.1 [DEVEL] (rgerhards), 2009-07-?? +- bugfix: potential segfault when zip-compressed syslog records were + received (double free) +- bugfix: properties inputname, fromhost, fromhost-ip, msg were lost when + working with disk queues +- performance enhancement: much faster, up to twice as fast (depending + on configuration) +- bugfix: abort condition when RecvFrom was not set and message reduction + was on. Happend e.g. with imuxsock. +- added $klogConsoleLogLevel directive which permits to set a new + console log level while rsyslog is active +- bugfix: message could be truncated after TAG, often when forwarding + This was a result of an internal processing error if maximum field + sizes had been specified in the property replacer. +- testbench improvements +--------------------------------------------------------------------------- +Version 4.5.0 [DEVEL] (rgerhards), 2009-07-02 +- activation order of inputs changed, they are now activated only after + privileges are dropped. Thanks to Michael Terry for the patch. +- greatly improved performance +- greatly reduced memory requirements of msg object + to around half of the previous demand. This means that more messages can + be stored in core! Due to fewer cache misses, this also means some + performance improvement. +- improved config error messages: now contain a copy of the config line + that (most likely) caused the error +- reduced max value for $DynaFileCacheSize to 1,000 (the former maximum + of 10,000 really made no sense, even 1,000 is very high, but we like + to keep the user in control ;)). +- added capability to fsync() queue disk files for enhanced reliability + (also add's speed, because you do no longer need to run the whole file + system in sync mode) +- more strict parsing of the hostname in rfc3164 mode, hopefully + removes false positives (but may cause some trouble with hostname + parsing). For details, see this bug tracker: + http://bugzilla.adiscon.com/show_bug.cgi?id=126 +- added configuration commands (see doc for explanations) + * $OMFileZipLevel + * $OMFileIOBufferSize + * $OMFileFlushOnTXEnd + * $MainMsgQueueSyncQueueFiles + * $ActionQueueSyncQueueFiles +- done some memory accesses explicitely atomic +- bugfix: subtle (and usually irrelevant) issue in timout processing + timeout could be one second too early if nanoseconds wrapped +- set a more sensible timeout for shutdow, now 1.5 seconds to complete + processing (this also removes those cases where the shutdown message + was not written because the termination happened before it) +- internal bugfix: object pointer was only reset to NULL when an object + was actually destructed. This most likely had no effect to existing code, + but it may also have caused trouble in remote cases. Similarly, the fix + may also cause trouble... +- bugfix: missing initialization during timestamp creation + This could lead to timestamps written in the wrong format, but not to + an abort +--------------------------------------------------------------------------- +Version 4.3.3 [beta] (rgerhards), 2009-0?-?? +- internal bugfix: object pointer was only reset to NULL when an object + was actually destructed. This most likely had no effect to existing code, + but it may also have caused trouble in remote cases. Similarly, the fix + may also cause trouble... +--------------------------------------------------------------------------- +Version 4.3.2 [beta] (rgerhards), 2009-06-24 +- removed long-obsoleted property UxTradMsg +- added a generic network stream server (in addition to rather specific + syslog tcp server) +- added ability for the UDP output action to rebind its send socket after + sending n messages. New config directive $ActionSendUDPRebindInterval + added for the purpose. By default, rebinding is disabled. This is + considered useful for load balancers. +- bugfix: imdiag/imtcp had a race condition +- improved testbench (now much better code design and reuse) +- added config switch --enable-testbench=no to turn off testbench +--------------------------------------------------------------------------- +Version 4.3.1 [DEVEL] (rgerhards), 2009-05-25 +- added capability to run multiple tcp listeners (on different ports) +- performance enhancement: imtcp calls parser no longer on input thread + but rather inside on of the potentially many main msg queue worker + threads (an enhancement scheduled for all input plugins where this is + possible) +- added $GenerateConfigGraph configuration command which can be used + to generate nice-looking (and very informative) rsyslog configuration + graphs. +- added $ActionName configuration directive (currently only used for + graph generation, but may find other uses) +- improved doc + * added (hopefully) easier to grasp queue explanation +- improved testbench + * added tests for queue disk-only mode (checks disk queue logic) +- bugfix: light and full delay watermarks had invalid values, badly + affecting performance for delayable inputs +- build system improvements - thanks to Michael Biebl +- added new testing module imdiag, which enables to talk to the + rsyslog core at runtime. The current implementation is only a + beginning, but can be expanded over time +--------------------------------------------------------------------------- +Version 4.3.0 [DEVEL] (rgerhards), 2009-04-17 +- new feature: new output plugin omprog, which permits to start program + and feed it (via its stdin) with syslog messages. If the program + terminates, it is restarted. +- improved internal handling of RainerScript functions, building the + necessary plumbing to support more functions with decent runtime + performance. This is also necessary towards the long-term goal + of loadable library modules. +- added new RainerScript function "tolower" +- improved testbench + * added tests for tcp-based reception + * added tcp-load test (1000 connections, 20,000 messages) +- added $MaxOpenFiles configuration directive +- bugfix: solved potential memory leak in msg processing, could manifest + itself in imtcp +- bugfix: ompgsql did not detect problems in sql command execution + this could cause loss of messages. The handling was correct if the + connection broke, but not if there was a problem with statement + execution. The most probable case for such a case would be invalid + sql inside the template, and this is now much easier to diagnose. +--------------------------------------------------------------------------- +Version 4.2.1 [v4-stable] (rgerhards), 2009-0?-?? +- bugfix: stderr/stdout were not closed to be able to emit error messages, + but this caused ssh sessions to hang. Now we close them after the + initial initialization. See forum thread: + http://kb.monitorware.com/controlling-terminal-issues-t9875.html +--------------------------------------------------------------------------- +Version 4.2.0 [v4-stable] (rgerhards), 2009-06-23 +- bugfix: light and full delay watermarks had invalid values, badly + affecting performance for delayable inputs +- imported all patches from 3.22.1 as of today (see below) +- bugfix: compile problems in im3195 +--------------------------------------------------------------------------- +Version 4.1.7 [BETA] (rgerhards), 2009-04-22 +- bugfix: $InputTCPMaxSessions config directive was accepted, but not + honored. This resulted in a fixed upper limit of 200 connections. +- bugfix: the default for $DirCreateMode was 0644, and as such wrong. + It has now been changed to 0700. For some background, please see + http://lists.adiscon.net/pipermail/rsyslog/2009-April/001986.html +- bugfix: ompgsql did not detect problems in sql command execution + this could cause loss of messages. The handling was correct if the + connection broke, but not if there was a problem with statement + execution. The most probable case for such a case would be invalid + sql inside the template, and this is now much easier to diagnose. +--------------------------------------------------------------------------- +Version 4.1.6 [DEVEL] (rgerhards), 2009-04-07 +- added new "csv" property replacer options to enable simple creation + of CSV-formatted outputs (format from RFC4180 is used) +- implemented function support in RainerScript. That means the engine + parses and compile functions, as well as executes a few build-in + ones. Dynamic loading and registration of functions is not yet + supported - but we now have a good foundation to do that later on. +- implemented the strlen() RainerScript function +- added a template output module +- added -T rsyslogd command line option, enables to specify a directory + where to chroot() into on startup. This is NOT a security feature but + introduced to support testing. Thus, -T does not make sure chroot() + is used in a secure way. (may be removed later) +- added omstdout module for testing purposes. Spits out all messages to + stdout - no config option, no other features +- added a parser testing suite (still needs to be extended, but a good + start) +- modified $ModLoad statement so that for modules whom's name starts with + a dot, no path is prepended (this enables relative-pathes and should + not break any valid current config) +- fixed a bug that caused action retries not to work correctly + situation was only cleared by a restart +- bugfix: closed dynafile was potentially never written until another + dynafile name was generated - potential loss of messages +- improved omfile so that it properly suspends itself if there is an + i/o or file name generation error. This enables it to be used with + the full high availability features of rsyslog's engine +- bugfix: fixed some segaults on Solaris, where vsprintf() does not + check for NULL pointers +- improved performance of regexp-based filters + Thanks to Arnaud Cornet for providing the idea and initial patch. +- added a new way how output plugins may be passed parameters. This is + more effcient for some outputs. They new can receive fields not only + as a single string but rather in an array where each string is seperated. +- added (some) developer documentation for output plugin interface +- bugfix: potential abort with DA queue after high watermark is reached + There exists a race condition that can lead to a segfault. Thanks + go to vbernetr, who performed the analysis and provided patch, which + I only tweaked a very little bit. +- bugfix: imtcp did incorrectly parse hostname/tag + Thanks to Luis Fernando Muñoz Mejías for the patch. +--------------------------------------------------------------------------- +Version 4.1.5 [DEVEL] (rgerhards), 2009-03-11 +- bugfix: parser did not correctly parse fields in UDP-received messages +- added ERE support in filter conditions + new comparison operation "ereregex" +- added new config directive $RepeatedMsgContainsOriginalMsg so that the + "last message repeated n times" messages, if generated, may + have an alternate format that contains the message that is being repeated +--------------------------------------------------------------------------- +Version 4.1.4 [DEVEL] (rgerhards), 2009-01-29 +- bugfix: inconsistent use of mutex/atomic operations could cause segfault + details are too many, for full analysis see blog post at: + http://blog.gerhards.net/2009/01/rsyslog-data-race-analysis.html +- bugfix: unitialized mutex was used in msg.c:getPRI + This was subtle, because getPRI is called as part of the debugging code + (always executed) in syslogd.c:logmsg. +- bufgix: $PreserveFQDN was not properly handled for locally emitted + messages +--------------------------------------------------------------------------- +Version 4.1.3 [DEVEL] (rgerhards), 2008-12-17 +- added $InputTCPServerAddtlFrameDelimiter config directive, which + enables to specify an additional, non-standard message delimiter + for processing plain tcp syslog. This is primarily a fix for the invalid + framing used in Juniper's NetScreen products. Credit to forum user + Arv for suggesting this solution. +- added $InputTCPServerInputName property, which enables a name to be + specified that will be available during message processing in the + inputname property. This is considered useful for logic that treats + messages differently depending on which input received them. +- added $PreserveFQDN config file directive + Enables to use FQDNs in sender names where the legacy default + would have stripped the domain part. + Thanks to BlinkMind, Inc. http://www.blinkmind.com for sponsoring this + development. +- bugfix: imudp went into an endless loop under some circumstances + (but could also leave it under some other circumstances...) + Thanks to David Lang and speedfox for reporting this issue. +--------------------------------------------------------------------------- +Version 4.1.2 [DEVEL] (rgerhards), 2008-12-04 +- bugfix: code did not compile without zlib +- security bugfix: $AllowedSender was not honored, all senders were + permitted instead (see http://www.rsyslog.com/Article322.phtml) +- security fix: imudp emitted a message when a non-permitted sender + tried to send a message to it. This behaviour is operator-configurable. + If enabled, a message was emitted each time. That way an attacker could + effectively fill the disk via this facility. The message is now + emitted only once in a minute (this currently is a hard-coded limit, + if someone comes up with a good reason to make it configurable, we + will probably do that). +- doc bugfix: typo in v3 compatibility document directive syntax + thanks to Andrej for reporting +- imported other changes from 3.21.8 and 3.20.1 (see there) +--------------------------------------------------------------------------- +Version 4.1.1 [DEVEL] (rgerhards), 2008-11-26 +- added $PrivDropToGroup, $PrivDropToUser, $PrivDropToGroupID, + $PrivDropToUserID config directives to enable dropping privileges. + This is an effort to provide a security enhancement. For the limits of this + approach, see http://wiki.rsyslog.com/index.php/Security +- re-enabled imklog to compile on FreeBSD (brought in from beta) +--------------------------------------------------------------------------- +Version 4.1.0 [DEVEL] (rgerhards), 2008-11-18 + +********************************* WARNING ********************************* +This version has a slightly different on-disk format for message entries. +As a consequence, old queue files being read by this version may have +an invalid output timestamp, which could result to some malfunction inside +the output driver. It is recommended to drain queues with the previous +version before switching to this one. +********************************* WARNING ********************************* + +- greatly enhanced performance when compared to v3. +- added configuration directive "HUPisRestart" which enables to configure + HUP to be either a full restart or "just" a leightweight way to + close open files. +- enhanced legacy syslog parser to detect year if part of the timestamp + the format is based on what Cisco devices seem to emit. +- added a setting "$OptimizeForUniprocessor" to enable users to turn off + pthread_yield calls which are counter-productive on multiprocessor + machines (but have been shown to be useful on uniprocessors) +- reordered imudp processing. Message parsing is now done as part of main + message queue worker processing (was part of the input thread) + This should also improve performance, as potentially more work is + done in parallel. +- bugfix: compressed syslog messages could be slightly mis-uncompressed + if the last byte of the compressed record was a NUL +- added $UDPServerTimeRequery option which enables to work with + less acurate timestamps in favor of performance. This enables querying + of the time only every n-th time if imudp is running in the tight + receive loop (aka receiving messsages at a high rate) +- doc bugfix: queue doc had wrong parameter name for setting controlling + worker thread shutdown period +- restructured rsyslog.conf documentation +- bugfix: memory leak in ompgsql + Thanks to Ken for providing the patch +--------------------------------------------------------------------------- Version 3.22.2 [v3-stable] (rgerhards), 2009-07-?? - bugfix: sending syslog messages with zip compression did not work --------------------------------------------------------------------------- @@ -92,9 +369,12 @@ Version 3.21.6 [DEVEL] (rgerhards), 2008-10-22 - bugfix: solved a segfault condition - bugfix: subsecond time properties generated by imfile, imklog and internal messages could be slightly inconsistent +- bugfix: (potentially big) memory leak on HUP if queues could not be + drained before timeout - thanks to David Lang for pointing this out - added capability to support multiple module search pathes. Thank to Marius Tomaschewski for providing the patch. - bugfix: im3195 did no longer compile +- improved "make distcheck" by ensuring everything relevant is recompiled --------------------------------------------------------------------------- Version 3.21.5 [DEVEL] (rgerhards), 2008-09-30 - performance optimization: unnecessary time() calls during message |