diff options
Diffstat (limited to 'ChangeLog')
| -rw-r--r-- | ChangeLog | 249 |
1 files changed, 249 insertions, 0 deletions
@@ -1,4 +1,253 @@ --------------------------------------------------------------------------- +Version 5.3.5 [DEVEL] (rgerhards), 2009-11-?? +- bugfixes imported from earlier releases + * bugfix: named pipes did no longer work (they always got an open error) + this was a regression from the omfile rewrite in 4.5.0 + * bugfix(testbench): sequence check was not always performed correctly, + that could result in tests reporting success when they actually failed +- [import v4]: added a so-called "On Demand Debug" mode, in which debug + output can be generated only after the process has started, but not right + from the beginning. This is assumed to be useful for hard-to-find bugs. + Also improved the doc on the debug system. +--------------------------------------------------------------------------- +Version 5.3.4 [DEVEL] (rgerhards), 2009-11-04 +- added the ability to create custom message parsers +- added $RulesetParser config directive that permits to bind specific + parsers to specific rulesets +- added omruleset output module, which provides great flexibility in + action processing. THIS IS A VERY IMPORTANT ADDITION, see its doc + for why. +- added the capability to have ruleset-specific main message queues + This offers considerable additional flexibility AND superior performance + (in cases where multiple inputs now can avoid lock contention) +- bugfix: correct default for escape ('#') character restored + This was accidently changed to '\\', thanks to David Lang for reporting +- bugfix(testbench): testcase did not properly wait for rsyslogd shutdown + thus some unpredictable behavior and a false negative test result + could occur. +--------------------------------------------------------------------------- +Version 5.3.3 [DEVEL] (rgerhards), 2009-10-27 +- simplified and thus speeded up the queue engine, also fixed some + potential race conditions (in very unusual shutdown conditions) + along the way. The threading model has seriously changes, so there may + be some regressions. +- enhanced test environment (inlcuding testbench): support for enhancing + probability of memory addressing failure by using non-NULL default + value for malloced memory (optional, only if requested by configure + option). This helps to track down some otherwise undetected issues + within the testbench. +- bugfix: potential abort if inputname property was not set + primarily a problem of imdiag +- bugfix: message processing states were not set correctly in all cases + however, this had no negative effect, as the message processing state + was not evaluated when a batch was deleted, and that was the only case + where the state could be wrong. +--------------------------------------------------------------------------- +Version 5.3.2 [DEVEL] (rgerhards), 2009-10-21 +- enhanced omfile to support transactional interface. This will increase + performance in many cases. +- added multi-ruleset support to imudp +- re-enabled input thread termination handling that does avoid thread + cancellation where possible. This provides a more reliable mode of + rsyslogd termination (canceling threads my result in not properly + freed resouces and potential later hangs, even though we perform + proper cancel handling in our code). This is part of an effort to + reduce thread cancellation as much as possible in rsyslog. + NOTE: the code previously written code for this functionality had a + subtle race condition. The new code solves that. +- enhanced immark to support non-cancel input module termination +- improved imudp so that epoll can be used in more environments, + fixed potential compile time problem if EPOLL_CLOEXEC is not available. +- some cleanup/slight improvement: + * changed imuxsock to no longer use deprecated submitAndParseMsg() IF + * changed submitAndParseMsg() interface to be a wrapper around the new + way of message creation/submission. This enables older plugins to be + used together with the new interface. The removal also enables us to + drop a lot of duplicate code, reducing complexity and increasing + maintainability. +- bugfix: segfault when starting up with an invalid .qi file for a disk queue + Failed for both pure disk as well as DA queues. Now, we emit an error + message and disable disk queueing facility. +- bugfix: potential segfault on messages with empty MSG part. This was a + recently introduced regression. +- bugfix: debug string larger than 1K were improperly displayed. Max size + is now 32K, and if a string is even longer it is meaningfully truncated. +--------------------------------------------------------------------------- +Version 5.3.1 [DEVEL] (rgerhards), 2009-10-05 +- added $AbortOnUncleanConfig directive - permits to prevent startup when + there are problems with the configuration file. See it's doc for + details. +- included some important fixes from v4-stable: + * bugfix: invalid handling of zero-sized messages + * bugfix: zero-sized UDP messages are no longer processed + * bugfix: random data could be appended to message + * bugfix: reverse lookup reduction logic in imudp do DNS queries too often +- bugfixes imported from 4.5.4: + * bugfix: potential segfault in stream writer on destruction + * bugfix: potential race in object loader (obj.c) during use/release + * bugfixes: potential problems in out file zip writer +--------------------------------------------------------------------------- +Version 5.3.0 [DEVEL] (rgerhards), 2009-09-14 +- begun to add simple GUI programs to gain insight into running rsyslogd + instances and help setup and troubleshooting (active via the + --enable-gui ./configure switch) +- changed imudp to utilize epoll(), where available. This shall provide + slightly better performance (just slightly because we called select() + rather infrequently on a busy system) +--------------------------------------------------------------------------- +Version 5.1.6 [v5-beta] (rgerhards), 2009-09-?? +- feature imports from v4.5.6 +- bugfix: potential race condition when queue worker threads were + terminated +- bugfix: solved potential (temporary) stall of messages when the queue was + almost empty and few new data added (caused testbench to sometimes hang!) +- fixed some race condition in testbench +- added more elaborate diagnostics to parts of the testbench +- bugfixes imported from 4.5.4: + * bugfix: potential segfault in stream writer on destruction + * bugfix: potential race in object loader (obj.c) during use/release + * bugfixes: potential problems in out file zip writer +- included some important fixes from 4.4.2: + * bugfix: invalid handling of zero-sized messages + * bugfix: zero-sized UDP messages are no longer processed + * bugfix: random data could be appended to message + * bugfix: reverse lookup reduction logic in imudp do DNS queries too often +--------------------------------------------------------------------------- +Version 5.1.5 [v5-beta] (rgerhards), 2009-09-11 +- added new config option $ActionWriteAllMarkMessages + this option permites to process mark messages under all circumstances, + even if an action was recently called. This can be useful to use mark + messages as a kind of heartbeat. +- added new config option $InputUnixListenSocketCreatePath + to permit the auto-creation of pathes to additional log sockets. This + turns out to be useful if they reside on temporary file systems and + rsyslogd starts up before the daemons that create these sockets + (rsyslogd always creates the socket itself if it does not exist). +- added $LogRSyslogStatusMessages configuration directive + permitting to turn off rsyslog start/stop/HUP messages. See Debian + ticket http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=463793 +- bugfix: hostnames with dashes in them were incorrectly treated as + malformed, thus causing them to be treated as TAG (this was a regression + introduced from the "rfc3164 strict" change in 4.5.0). Testbench has been + updated to include a smaple message with a hostname containing a dash. +- bugfix: strings improperly reused, resulting in some message properties + be populated with strings from previous messages. This was caused by + an improper predicate check. +- added new config directive $omfileForceChown [import from 4.7.0] +--------------------------------------------------------------------------- +Version 5.1.4 [DEVEL] (rgerhards), 2009-08-20 +- legacy syslog parser changed so that it now accepts date stamps in + wrong case. Some devices seem to create them and I do not see any harm + in supporting that. +- added $InputTCPMaxListeners directive - permits to specify how many + TCP servers shall be possible (default is 20). +- bugfix: memory leak with some input modules. Those inputs that + use parseAndSubmitMsg() leak two small memory blocks with every message. + Typically, those process only relatively few messages, so the issue + does most probably not have any effect in practice. +- bugfix: if tcp listen port could not be created, no error message was + emitted +- bugfix: discard action did not work (did not discard messages) +- bugfix: discard action caused segfault +- bugfix: potential segfault in output file writer (omfile) + In async write mode, we use modular arithmetic to index the output + buffer array. However, the counter variables accidently were signed, + thus resulting in negative indizes after integer overflow. That in turn + could lead to segfaults, but was depending on the memory layout of + the instance in question (which in turn depended on a number of + variables, like compile settings but also configuration). The counters + are now unsigned (as they always should have been) and so the dangling + mis-indexing does no longer happen. This bug potentially affected all + installations, even if only some may actually have seen a segfault. +--------------------------------------------------------------------------- +Version 5.1.3 [DEVEL] (rgerhards), 2009-07-28 +- architecture change: queue now always has at least one worker thread + if not running in direct mode. Previous versions could run without + any active workers. This simplifies the code at a very small expense. + See v5 compatibility note document for more in-depth discussion. +- enhance: UDP spoofing supported via new output module omudpspoof + See the omudpspoof documentation for details and samples +- 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. +- bugfix: minor static memory leak while reading configuration + did NOT leak based on message volume +- internal: added ability to terminate input modules not via pthread_cancel + but an alternate approach via pthread_kill. This is somewhat safer as we + do not need to think about the cancel-safeness of all libraries we use. + However, not all inputs can easily supported, so this now is a feature + that can be requested by the input module (the most important ones + request it). +--------------------------------------------------------------------------- +Version 5.1.2 [DEVEL] (rgerhards), 2009-07-08 +- bugfix: properties inputname, fromhost, fromhost-ip, msg were lost when + working with disk queues +- some performance enhancements +- 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 +- some internal code cleanup +--------------------------------------------------------------------------- +Version 5.1.1 [DEVEL] (rgerhards), 2009-07-03 +- bugfix: huge memory leak in queue engine (made rsyslogd unusable in + production). Occured if at least one queue was in direct mode + (the default for action queues) +- imported many performance optimizations from v4-devel (4.5.0) +- 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) +--------------------------------------------------------------------------- +Version 5.1.0 [DEVEL] (rgerhards), 2009-05-29 + +*********************************** NOTE ********************************** +The v5 versions of rsyslog feature a greatly redesigned queue engine. The +major theme for the v5 release is twofold: + +a) greatly improved performance +b) enable audit-grade processing + +Here, audit-grade processing means that rsyslog, if used together with +audit-grade transports and configured correctly, will never lose messages +that already have been acknowledged, not even in fatal failure cases like +sudden loss of power. + +Note that large parts of rsyslog's important core components have been +restructured to support these design goals. As such, early versions of +the engine will probably be less stable than the v3/v4 engine. + +Also note that the initial versions do not cover all and everything. As +usual, the code will evolve toward the final goal as version numbers +increase. +*********************************** NOTE ********************************** + +- redesigned queue engine so that it supports ultra-reliable operations + This resulted in a rewrite of large parts. The new capability can be + used to build audit-grade systems on the basis of rsyslog. +- added $MainMsgQueueDequeueBatchSize and $ActionQueueDequeueBatchSize + configuration directives +- implemented a new transactional output module interface which provides + superior performance (for databases potentially far superior performance) +- increased ompgsql performance by adapting to new transactional + output module interface +--------------------------------------------------------------------------- +Version 4.7.0 [v4-devel] (rgerhards), 2009-09-?? +- added function getenv() to RainerScript +- added new config option $InputUnixListenSocketCreatePath + to permit the auto-creation of pathes to additional log sockets. This + turns out to be useful if they reside on temporary file systems and + rsyslogd starts up before the daemons that create these sockets + (rsyslogd always creates the socket itself if it does not exist). +- added $LogRSyslogStatusMessages configuration directive + permitting to turn off rsyslog start/stop/HUP messages. See Debian + ticket http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=463793 +- added new config directive $omfileForceChown to (try to) fix some broken + system configs. + See ticket for details: http://bugzilla.adiscon.com/show_bug.cgi?id=150 +- imported changes from 4.5.6 and below +--------------------------------------------------------------------------- Version 4.5.7 [v4-beta] (rgerhards), 2009-11-?? - added a so-called "On Demand Debug" mode, in which debug output can be generated only after the process has started, but not right from |