Browse Prior Art Database

Method for Autonomic Components to share Opinions

IP.com Disclosure Number: IPCOM000032454D
Original Publication Date: 2004-Nov-05
Included in the Prior Art Database: 2004-Nov-05
Document File: 3 page(s) / 106K

Publishing Venue

IBM

Abstract

This article describes a method by which the autonomic managers of similar elements can share and evaluate opinions regarding which actions to take when a managed element encounters an unexpected condition. This idea enables the planning and analysis aspects of an autonomic manager to be distributed with many different autonomic managers providing their input. The requesting autonomic manager does not need to have rich knowledge to respond to stimuli, instead it can observe stilumi and farm requests out to a network of more knowledgeable autonomic managers for guidance. The requesting autonomic manager evaluates responses before taking any action.

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Method for Autonomic Components to share Opinions

We define an Opinion to be the output of the Plan phase when the analysis and planning have been carried out on information provided by another autonomic component rather than from the current component's monitoring. This article describes a method whereby autonomic components can solicit each others' opinions and aggregate the results to make a decision on the final Plan to be executed. In this way knowledge is implicitly shared between autonomic components resulting in better decision making. The approach consists of:

    1) An interface for components to request opinions from others, receive requests for opinion

2) An interface for receiving the results of requests or unsolicited opinions
3) A method for aggregating different opinions and evaluating them to form a plan

Figure 1: an autonomic managers requests opinions from two others and collate their responses

    When an autonomic element detects possible abnormal behaviour through its sensor, it has ability to contact external systems to obtain assistance in responding to such abnormal behaviour - possibly through a broker network. The element initiates a request for guidance and provides details of requirements. Multi responses may be received and the machine evaluates replies and may then take action based on received guidance. In more detail, the system the implements this consists of:

    1) An interface for components to request opinions from others, receive requests for opinion

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The Opinion Requests include: - a description of the element - the state (or part of the state) of the element being monitored - a description of the effectors available - a description of the 'goal'

    These requests should be presented in a standardized format that is recognizable by other autonomic managers e.g. domain-specific XML

2) An interface for receiving the results of requests - Opinions

    An opinion consis...