Cloud computing system reliability modeling method capable of considering common cause and virtual machine fault migration

A technology of failover and modeling method, applied in reliability/availability analysis, calculation, program control design, etc., it can solve the problem of ill-considered virtual machine failover, and achieve the goal of simplifying the state space and improving modeling efficiency. Effect

Active Publication Date: 2016-12-21
BEIHANG UNIV
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Problems solved by technology

[0004] The purpose of the present invention is to solve the problem of poor consideration of virtual machine failure migration in the reliability modeling of cloud computing. On the basis of the cloud computing system reliability mod

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  • Cloud computing system reliability modeling method capable of considering common cause and virtual machine fault migration
  • Cloud computing system reliability modeling method capable of considering common cause and virtual machine fault migration
  • Cloud computing system reliability modeling method capable of considering common cause and virtual machine fault migration

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Embodiment Construction

[0036] The present invention will be further described in detail with reference to the accompanying drawings and embodiments.

[0037] The present invention proposes a cloud computing system reliability modeling method considering common cause failures and virtual machine failure migration, the process is as follows figure 1 shown, including the following steps:

[0038] Step 1: Establish a cloud computing system and allocate resources.

[0039] Build a cloud computing system, such as figure 2 As shown, the infrastructure of the cloud computing system includes n types of servers, and the number of servers of the i type is m i and each server contains p i cores, and each core corresponds to a virtual machine, where the failure rate of the i-th server is subject to failure rate λ S Exponential distribution of (i), the failures between servers are independent; the failure rate of the virtual machine under the i-type server is λ V Exponential distribution of (i). n, m i ,p...

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Abstract

The invention discloses a cloud computing system reliability modeling method capable of considering cloud computing common cause faults and virtual machine fault migration, and belongs to the technical field of network reliability. The method comprises the following steps: establishing a cloud computing system, and carrying out resource distribution; carrying out state space division on the cloud computing system, and calculating the existence probability of each state; determining a cloud computing system reliability modeling mode; calculating a probability that the amount of virtual machines which normally work meets a requirement; calculating the migration failure probability of each state according to different states; and calculating the cloud computing system reliability capable of considering common causes and the virtual machine fault migration under a given requirement. The method considers a plurality of virtual machine common cause faults caused by server faults and the fault-tolerance strategy of virtual machine migration, the problem that other models can not thoughtfully consider the common cause fault and the virtual machine fault migration is solved on the basis of the state space model, the state space is simplified, and 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 cloud computing common cause failure and virtual machine failure migration. Background technique [0002] As a new computing model, cloud computing has been widely used due to its advantages of high availability and high scalability. However, frequent failures of cloud computing systems have also drawn people's attention to its reliability. Virtualization is a key feature of cloud computing systems. It is realized by creating multiple virtual machines (VMs) on physical servers, which realizes the sharing of cloud computing infrastructure and improves resource utilization. Due to server failures, it will cause Multiple virtual machines fail together, therefore, reliability modeling of cloud computing systems needs to consider common cause failures. At the same time, in order to improve the availability of the syst...

Claims

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Application Information

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IPC IPC(8): G06F11/00G06F9/455
CPCG06F9/45533G06F11/008G06F2009/45591
Inventor 李瑞莹李琼
Owner BEIHANG UNIV
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