Abstract
A log is recording of system's activity, aimed to help system administrator to traceback an attack, find the causes of a malfunction and generally with troubleshooting. The fact that logs are the only information an administrator may have for an incident, makes logging system a crucial part of an IT infrastructure.
In large scale infrastructures, such as LHCb Online, where quite a few GB of logs are produced daily, it is impossible for a human to review all of these logs. Moreover, a great percentage of them as just "noise". That makes clear that a more automated and sophisticated approach is needed.
In this paper, we present a low-cost centralized logging system which allow us to do in-depth analysis of every log.
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