Microsoft Technology Licensing, LLC

Mark Gray

Bruce Gordon Payette

Kenneth M Hansen

Narayanan Lakshmanan

Hemant Mahawar

Technologies are provided for non-monotonic eventual convergence for desired state configuration ('DSC'). In some situations DSC cannot move toward a desired state without first moving further from that state. For example, a file that needs to be replaced with a newer version but that is currently executing (desired state of 'operating') cannot be replaced without first being stopped. But stopping moves in the wrong direction relative to the desired state, which is to have the service operating. This moving away so as to be able to move forward is a problem for conventional DSC systems that results in failures. The solution to this problem is non-monotonic eventual convergence (&#x201c;NMEC&#x201d;) which enables a DSC system to configure a target system for a desired state by moving further away from a desired state if that is needed to eventually reach the desired state.

Non-monotonic eventual convergence for desired state configuration

Technologies are provided for non-monotonic eventual convergence for desired state configuration. One class of problem in DSC is that, in some situations, DSC cannot move forward toward a desired state without first moving further from the desired state. For example, an executable file providing a service that needs to be replaced with a newer version, but that is currently executing (i.e., in the desired state of 'operating'), cannot be replaced with the newer version without first being stopped. But stopping the service moves in the wrong direction relative to the desired state, which is to have the service operating. This moving away from the desired state so as to be able to move closer to the desired state is a problem for conventional DSC systems that results in failures. The solution to this problem is herein referred to as 'non-monotonic eventual convergence' or &#x201c;NMEC&#x201d;. Such NMEC enables a DSC system to configure a target system for a desired state by moving further away from that state if such is needed to eventually reach the desired state.

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Mark Gray