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Devialog is a simple anomaly based syslog analyzer written in Perl. The package consists of two Perl scripts:
The style of programming reminds top quality shell scripts style, not so much perverted complexity many Perl gurus adopt as the style.
There some architectural strong points
Codebase of devialog can be substantially simplified, probably cut in half
With an included utility, devialogsig, the initial "draft" signatures are created automatically and can edited as you get experience with the product.
Alert email contain generated signature so if the message represents noise it can be immediately added to the signature file.
The script operates on a single message basis. There is no ability to correlate sequences of syslog messages (like for example in case of reboot).
Signature additions are as simple as a cut and paste of regular expressions.
# syslogd -r
./devialogsig.pl -l /var/log/messages -c signatures.pl -t syslog -C
* devialog needs at least a day (ideally a week) of syslog to truly generate a useful signature base.
./devialog.pl -c devialog.conf
Groupthink : Two Party System as Polyarchy : Corruption of Regulators : Bureaucracies : Understanding Micromanagers and Control Freaks : Toxic Managers : Harvard Mafia : Diplomatic Communication : Surviving a Bad Performance Review : Insufficient Retirement Funds as Immanent Problem of Neoliberal Regime : PseudoScience : Who Rules America : Neoliberalism : The Iron Law of Oligarchy : Libertarian Philosophy
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The Peter Principle : Parkinson Law : 1984 : The Mythical Man-Month : How to Solve It by George Polya : The Art of Computer Programming : The Elements of Programming Style : The Unix Haterís Handbook : The Jargon file : The True Believer : Programming Pearls : The Good Soldier Svejk : The Power Elite
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Last modified: March 12, 2019