Using Abduction in Markov Logic Networks for Root Cause Analysis
This work addresses root cause analysis for IT infrastructure failures, offering a reusable tool for users without specific infrastructure knowledge, but it appears incremental as it adapts existing methods to a new application.
The authors tackled the problem of identifying root causes for failures in IT infrastructure by proposing a new approach based on abduction in Markov Logic Networks, which they implemented in a tool and demonstrated in a sample scenario.
IT infrastructure is a crucial part in most of today's business operations. High availability and reliability, and short response times to outages are essential. Thus a high amount of tool support and automation in risk management is desirable to decrease outages. We propose a new approach for calculating the root cause for an observed failure in an IT infrastructure. Our approach is based on Abduction in Markov Logic Networks. Abduction aims to find an explanation for a given observation in the light of some background knowledge. In failure diagnosis, the explanation corresponds to the root cause, the observation to the failure of a component, and the background knowledge to the dependency graph extended by potential risks. We apply a method to extend a Markov Logic Network in order to conduct abductive reasoning, which is not naturally supported in this formalism. Our approach exhibits a high amount of reusability and enables users without specific knowledge of a concrete infrastructure to gain viable insights in the case of an incident. We implemented the method in a tool and illustrate its suitability for root cause analysis by applying it to a sample scenario.