雲端系統虛擬機快速重啟復原排程機制之比較

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姓名

孫秉顥(Ping-Hao Sun) 查詢紙本館藏

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資訊工程學系

論文名稱

雲端系統虛擬機快速重啟復原排程機制之比較
(Comparison of Virtual Machine Evacuation Strategies for Cloud Systems)

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摘要(中)

在雲端環境中，為使虛擬機器所提供之服務不中斷，故雲端環境需要虛擬機器具有高可用性(High Availability, HA)。若是因為機器故障而導致虛擬機無法繼續提供服務，對使用者來說每分鐘的故障代表著每分鐘的金錢損失。為降低提供服務之虛擬機中斷時間。一般而言，當虛擬機器錯誤發生時，雲端系統必須要很快地偵測出錯誤，然後進行快速復原。在雲端HA的作法上，當檢測出運算節點發生故障，就需要將虛擬機疏散(Evacuate)至其他運算節點。本研究針對的是基於OpenStack雲端平台之各種現存虛擬機器疏散策略的比較，了解最迅速的排程法將虛擬機更快的重啟，達到虛擬機快速復原，以提高雲端系統之高可用性。藉由本論文的實驗發現，最佳情況下 RR較 Random多減少了約 10%的時間，較 Nova Filter Scheduler減少了減少了 20%的

摘要(英)

In the cloud environment, to avoid the services provided by the virtual machine being interrupted, the cloud environment requires virtual machine with high availability (HA). If the suspension of virtual machine leading to stop providing services due to the mechanical failures, failures per minutes will turn into cost for users. In order to reduce the interruption time of virtual machine, when a virtual machine error occurs, the cloud systems should detect and recover errors as soon as possible. In a real situation of HA in the cloud, when the computing node failure is detected, it is necessary to evacuate the virtual machine to other computing nodes. This study is aimed at analyzing the difference between the existing virtual machines evacuation strategies based on OpenStack cloud platform, to acknowledge the most rapid method to schedule restarting the virtual machine faster and to achieve rapid recovery to improve the availability of cloud systems. According to the experiments in this paper, RR reduced about 10% of the time less than Random, and about 20% of the time less than Nova Filter Scheduler.

關鍵字(中)

★ 雲端運算
★ 高可用性
★ 虛擬機器
★ 軟體定義運算叢集

關鍵字(英)

★ Cloud Computing
★ High Availability
★ Virtual Machine
★ Software-Defined High Availability Cluster

論文目次

摘要 ................................ ................................ ................................ ............................... V
Abstract ................................ ................................ ................................ ........................ VI
目錄 ................................ ................................ ................................ ............................ VII
圖目錄 ................................ ................................ ................................ ....................... VIII
表目錄 ................................ ................................ ................................ .......................... IX
第一章緒論 ................................ ................................ ................................ ................ 1
1-1 研究背景 ................................ ................................ ................................ ........ 1
1-2 研究動機與實作目標 ................................ ................................ .................... 6
1-3 論文貢獻 ................................ ................................ ................................ ........ 7
1-4 論文架構 ................................ ................................ ................................ ........ 8
第二章相關研究 ................................ ................................ ................................ ........ 9
2-1 背景知識 ................................ ................................ ................................ ........ 9
2-1-1 OpenStack ................................ ................................ ................................ ..... 9
2-1-2 OpenStack HA機制 ................................ ................................ ................... 11
2-1-3 Nova ................................ ................................ ................................ ............ 13
2-2 相關排程研究 ................................ ................................ .............................. 15
2-2-1 OpenStack nova-scheduler ................................ ................................ .......... 15
2-2-2 Virtual Machine Boot Time Model[ 21] ................................ .................. 17
2-3 相關文獻探討 ................................ ................................ .............................. 21
第三章系統設計 ................................ ................................ ................................ ...... 23
3-1 系統架構模型 ................................ ................................ .............................. 23
3-2 軟體定義高可靠度叢集 ................................ ................................ .............. 25
3-3 Scheduling................................ ................................ ................................ .... 26
第四章實驗環境及測量 ................................ ................................ .......................... 31
4-1 實驗環境及架構 ................................ ................................ .......................... 31
4-2 OpenStack比較實驗 ................................ ................................ ................... 32
4-2-1實驗假設 ................................ ................................ ................................ ..... 32
4-2-2實驗案例 ................................ ................................ ................................ ..... 32
4-2-3實驗結果 ................................ ................................ ................................ ..... 32
4-3 實驗效能分析與討論 ................................ ................................ .................. 37
第五章結論與未來研究 ................................ ................................ .......................... 39
參考文獻 ................................ ................................ ................................ ...................... 40

參考文獻

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指導教授

梁德容

審核日期

2019-11-22

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