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Cloud computing system reliability modeling method considering common cause fault

A modeling method and cloud computing technology, applied in reliability/availability analysis, computing, program control design, etc., can solve problems such as ill-considered common-cause failures of virtual machines, and achieve the effect of improving modeling efficiency

Active Publication Date: 2016-07-06
BEIHANG UNIV
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Problems solved by technology

[0004] The purpose of the present invention is to solve the problem of insufficient consideration of common cause failures of virtual machines caused by server failures in the reliability modeling of cloud computing, and use servers and virtual machines as basic elements to analyze the cloud computing system corresponding to given requirements State combination, and a simplification method for the state combination is given, based on the fault tree and state space model, the cloud computing system reliability modeling considering common cause failures under given requirements is realized

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  • Cloud computing system reliability modeling method considering common cause fault
  • Cloud computing system reliability modeling method considering common cause fault
  • Cloud computing system reliability modeling method considering common cause fault

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Embodiment Construction

[0031] The present invention will be further described in detail with reference to the accompanying drawings and embodiments.

[0032] The present invention proposes a cloud computing system reliability modeling method considering common cause failures, the process is as follows figure 1 shown, including the following steps:

[0033] Step 1: Determine the state combination of the same single server in the cloud computing system and give a simplification method;

[0034] Build a cloud computing system, such as figure 2 As shown, the cloud computing operating system (CloudOS) is the core of the cloud computing system. After receiving the service request from the user, it converts it into multiple subtasks, and distributes them to each virtual machine for execution through the virtual machine allocator. The infrastructure of the cloud computing system includes n types of servers, and the number of i type servers is m i and each server contains p i cores, and each core corres...

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Abstract

The invention discloses a cloud computing system reliability modeling method considering a common cause fault, and belongs to the technical field of network reliability. The method comprises the steps of determining a state combination of a similar single server of a cloud computing system and performing simplification; calculating an existence probability of the simplified state combination of the similar single server by adopting a fault tree method; determining state combinations of similar servers of the cloud computing system, performing simplification, and calculating an existence probability of each state combination; enumerating state combinations of different servers of the cloud computing system, and calculating an existence probability of each state combination; and according to the state space of the cloud computing system, calculating the system reliability according to a given demand. According to the method, a common cause fault of all virtual machines running in the servers, caused by server faults, is considered, the state space modeling is adopted, and the state space is simplified, so that the problem of state space explosion during system scale increment is solved and the modeling efficiency is improved.

Description

technical field [0001] The invention belongs to the technical field of network reliability, and in particular relates to a reliability modeling method considering common cause failures of cloud computing. Background technique [0002] As a new computing model, cloud computing combines a large number of computing resources into a data center and provides them to users in the form of services, which brings convenience and reduces computing and storage costs, and has been widely used. However, the frequent failures of cloud computing systems also draw people's attention to its reliability, and its complex structure makes it difficult to analyze the reliability of cloud computing. At the same time, virtualization, as a key feature of cloud computing systems, is realized by creating multiple virtual machines (VMs) on physical servers. On the one hand, it realizes the sharing of cloud computing infrastructure and improves resource utilization. When , multiple virtual machines run...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F11/00G06F9/455
CPCG06F9/45533G06F11/008G06F2009/45591
Inventor 李瑞莹李琼黄宁
Owner BEIHANG UNIV
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