OpenStack 開放原始碼雲端運算平台服務需求配置之研究

隨著雲端運算的技術及應用不斷的進步，開放原始碼的雲端運算平台紛紛出現。但這些開放原始碼的平台卻各有其優缺點，因此必須透過不同平台的整合，才能符合使用者需求，使得雲端運算環境建置的成本相對升高。因此，本研究以OpenStack為例，提出一套架構在雲端運算平台的系統架構與虛擬機器配置策略。本研究所建置的系統架構位於平台即服務(Platform as a Service；PaaS)與基礎設施即服務(Infrastructure as a Service；IaaS)之間，可做為資源配置的中介層。而虛擬機器配置策略則利用先到先服務(First Come First Served；FCFS)排班演算法及最先合適(First Fit)資源配置演算法，將使用者的服務需求配置到適當的虛擬機器。透過本研究所提出的系統架構與虛擬機器配置策略，除了可以達到服務需求與虛擬資源的有效配置，更可以降低IaaS中實體與虛擬資源的浪費。

With cloud computing technologies and applications continue to progress, the open source cloud computing platform have been emerged. In order to meet the requirements of user, open source cloud computing platforms need to be integrated. Therefore, a system architecture and virtual machine allocation strategy based on OpenStack are proposed in this study. The system architecture is used as an intermediate layer between PaaS (Platform as a Service) and IaaS (Infrastructure as a Service). The virtual machine allocation strategy uses the First Come First Served (FCFS) scheduling algorithm and the First Fit allocation algorithm to configure the appropriate virtual machine. By using the proposed system architecture and virtual machine allocation strategy, the efficient allocation of virtual resources can be achieved, and the waste of physical and virtual resources in IaaS can be reduced.