Skip to main content

2.0.0 experiences

As it turned out the 2.0.0 release was not so bad after all. At least I have not received show-stopper bugreports, which either means that noone is using it, or everything is fine and dandy :). Hopefully it is the latter, rc releases were tested by a few people.

In the meanwhile I started adding a few missing bits that were still present in 1.6.x but I never got around to implementing in the 2.0.0 tree. Among them I readded the remove_if_older() option. By the way, I don't really like the name of this option, does anyone have a better idea? If you do, please put it in a comment here or send me an email. (I was thinking about retention_time() but I'm afraid it is more difficult to understand what it would do)

The other bit is the new/shiny DNS cache, which also supports persistent entries. This means that syslog-ng can read your /etc/hosts file, resolve IPs that are present there, and use IP addresses for anything else. This removes the dependency on DNS, and should also improve overall performance.

So all in all, syslog-ng 2.0 is in a good shape, give it a try. Testing the latest snapshots, especially the new DNS cache parts, would be appreciated.

Comments

Anonymous said…
spoof_source missing :(
This was llovely to read

Popular posts from this blog

syslog-ng fun with performance

I like christmas for a number of reasons: in addition to the traditional "meet and have fun with your family", eat lots of delicious food and so on, I like it because this is the season of the year when I have some time to do whatever I feel like. This year I felt like doing some syslog-ng performance analysis. After reading Ulrich Deppert's series about stuff "What every programmer should know about memory" on LWN, I thought I'm more than prepared to improve syslog-ng performance. Before going any further, I'd recommend this reading to any programmer, it's a bit long but every second reading it is worth it. As you need to measure performance in order to improve it, I wrote a tool called "loggen". This program generates messages messages at a user-specifyable rate. Apart from the git repository you can get this tool from the latest syslog-ng snapshots. Loggen supports TCP, UDP and UNIX domain sockets, so really almost everything can be me...

syslog-ng contributions redefined

syslog-ng has been around for about 12 years now, but I think the biggest change in the project's life is imminent: with the upcoming release of syslog-ng OSE 3.2, syslog-ng will become an independent entity. Until now, syslog-ng was primarily maintained & developed by BalaBit, copyrights needed to be reassigned in order to grant BalaBit special privileges. BalaBit used her privileges to create a dual-licensed fork of syslog-ng, named "syslog-ng Premium Edition". The value we offer over the Open Source Edition of syslog-ng are things that larger enterprises require: support on a large number of UNIX platforms (27 as of 3.1), smaller and larger feature differences (like the encrypted/digitally signed logfile feature) better test coverage and release management longer term support Although perfectly legal, this business model was not welcome in various Free Software communities, and has caused friction and harm, because BalaBit has enjoyed a privilege that no others cou...

syslog-ng message parsing

Earlier this month, I announced the new syslog-ng 3.0 git tree, adding a lot of new features to syslog-ng Open Source Edition. I thought it'd be useful to describe the new features with some more details, so this time I'd write about message parsing. First of all, the message structure was a bit generalized in syslog-ng. Earlier it was encapsulating a syslog message and had little space to anything beyond that. That is, every log message that syslog-ng handled had date, host , program and message fields, but syslog-ng didn't care about message contents. This has changed, a LogMessage became a set of name-value pairs , with some "built-in" pairs that correspond to the parts of a syslog message. The aim with this change is: new name-value pairs can be associated with messages through the use of a parsing. It is now possible to parse non-syslog logs and use the columns the same way you could do it with syslog fields. Use them in the name of files, SQL tables or c...