Download Policy Technologies for Self-Managing Systems by Dakshi Agrawal, Seraphin Calo, Kang-won Lee, Jorge Lobo, PDF

By Dakshi Agrawal, Seraphin Calo, Kang-won Lee, Jorge Lobo, Dinesh Verma

  coverage applied sciences for Self-Managing structures   Dakshi Agrawal Calo Seraphin Kang-won Lee Jorge Lobo Dinesh Verma   Use regulations to construct self-managing IT platforms that get a better price, enhance availability, and improve agility   IT rules can be utilized to steer and automate determination making within the administration of laptop and community infrastructure, supporting IT enterprises decrease bills, increase provider caliber, and increase enterprise agility. Now, a group of best IBM researchers introduces the newest ideas in guidelines and autonomic computing and demonstrates find out how to placed them to paintings on your association.   The authors conceal the total coverage lifecycle: making plans, definition, illustration in average coverage languages, validation, distribution, enforcement, and extra. They determine confirmed styles for designing policy-enabled self-managing structures and express how regulations should be built-in right into a entire framework for method self administration. They conscientiously introduce key applied sciences similar to principles engines and the IBM coverage administration framework, in addition to rising criteria reminiscent of the DMTF’s universal details version. eventually, they give start-to-finish case reports of coverage administration in parts starting from garage and IP networking to protection.   This book’s insights and sensible suggestions can be worthy to each IT specialist who can take advantage of guidelines: architects, builders, directors, researchers, and bosses alike. assurance comprises   knowing the lifestyles cycle and parts of policy-based self-managing structures picking out your most sensible possibilities to force worth from guidelines Defining the main applicable abstraction point on your guidelines utilizing the DMTF’s universal info version to set up the logical constitution and contents of regulations Validating the consistency and appropriateness of your guidelines Making your regulations immediately enforceable by means of laptop utilizing regulations to simplify and streamline configuration administration for SANs and different IT structures enhancing availability through imposing regulations which may instantly react to faults and blunder stipulations    

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The Layered Policy Architecture Because the mechanisms that can govern and constrain the behavior of a distributed system are provided by the underlying system components, it is necessary to take policies specified for the whole system and refine them into policies for individual components that must be upheld to meet the overall systemwide policies. In the password example just given, one implication of the security policy is that all servers that follow that policy should expire user passwords for Unix® shell access to the servers after 90 days.

Thus, we will define the behavior of a system to be a continuous ordered set of states, where the order is imposed by time. Consider a system S that may behave in many ways. Let B(S) be the set of all possible behaviors the system S can exhibit (that is, any possible continuous ordered set of states). Definition: A policy is a set of constraints on the possible behaviors B(S) of a target system S; that is, it defines a subset of B(S) of acceptable behaviors for S. We note that this is a very generic definition, and it does not say how policies can be implemented or enforced.

A target system may be a single device such as a notebook computer or workstation, or it can be a complex system such as a data center or a bank information system consisting of multiple servers and storage systems. 2. A set of attributes associated with the target system. The value of an attribute can be a simple number or text string, or it can be as complex as a structured object containing other attributes. At this moment we do not need to define a data model for attributes; we need to know only that these attributes are identifiable and accessible and that they take values from a predefined set of types.

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