Paper Info
Title
Specification-enhanced policies for automated management of changes in IT systems
Abstract
Enterprise and grid computing systems are complex and subject to a broad range of changes such as configuration updates, failures, and performance degradations. These changes affect infrastructure elements such as computation and storage nodes, applications, and system management elements such as monitoring infrastructures. Today's best practices in use by system administrators to manage these changes are manual and ad-hoc. In large complex installations, this would lead to high operational costs, broken closed loop automation, and reduced agility. Providing tools and mechanisms to administrators that automate the reaction to these changes is highly desirable and is an active research area. Policy-based management using Event-Condition-Action (ECA) rules is a well-known approach for such automated change management where management actions are executed when specified event-conditions are observed. In complex systems, the interdependence of components generates multiple events when a single change happens causing multiple rules to be triggered. The order of execution of rule actions determines the system behavior necessitating reasoning about execution order. ECA rules do not contain explicit action specifications needed for reasoning and are therefore unsuited for specifying management rules. In this paper, we propose a specification-enhanced ECA model called Event-Condition-Precondition-Action-Postcondition (ECPAP) for designing adaptation rules. ECPAP rules contain action specifications in first order predicate logic enabling us to develop reasoning algorithms to determine enforcement order of multiple rules. The enforcement order is represented as a Boolean Interpreted Petri Net workflow. We introduce a new notion called enforcement semantics that provides guarantees about rule ordering. We have built an adaptation framework using ECPAP model and have demonstrated it for automated change management of Ganglia and HP OpenView monitoring systems. The evaluation of the framework illustrates the significance of the ECPAP model and demonstrates its applicability for managing complex IT environments.
Year
Venue
Keywords
2006
LISA
system management,change management,autonomic computing,best practice,grid computing,petri net,complex system,first order
Field
DocType
Citations 
Change management,Data mining,Grid computing,Petri net,Software engineering,Information technology,Computer science,Automation,First-order logic,Systems management,Workflow,Art history
Conference
4
PageRank 
References 
Authors
0.44
16
6
Name
Order
Citations
PageRank
Chetan Shiva Shankar1434.01
Vanish Talwar267941.38
Subu Iyer317115.65
Yuan Chen4876.16
Dejan S. Milojicic524931.80
Roy Campbell65133573.61