CAJ | 학술논문

针对传统企业信息系统如何向云服务模式过渡、降低服务运行成本的问题，分析用于搭设云服务的开源PaaS平台“Cloud Foundry”的技术架构及其动态扩展性特征，提出一种基于此平台重用已有服务器的混搭云构建方法。通过对用户访问量的典型特征分析，针对用户访问具有周期性的特点，提出一种结合预测的混搭云负载均衡节点调度算法。考虑云服务采用虚拟化技术的性能损耗，从总计算成本最小化的角度出发，给出物理服务器与虚拟服务器的最优配比算法。
침대전통기업신식계통여하향운복무모식과도、강저복무운행성본적문제，분석용우탑설운복무적개원PaaS평태“Cloud Foundry”적기술가구급기동태확전성특정，제출일충기우차평태중용이유복무기적혼탑운구건방법。통과대용호방문량적전형특정분석，침대용호방문구유주기성적특점，제출일충결합예측적혼탑운부재균형절점조도산법。고필운복무채용허의화기술적성능손모，종총계산성본최소화적각도출발，급출물리복무기여허의복무기적최우배비산법。
For the migration from traditional enterprise information system to the mode of cloud service and the effort to reduce service running cost,the technology architecture and dynamic expansion features of Cloud Foundry (CF)as well as an open source platform of PaaS were analyzed,and a construction method of mix cloud was proposed to reuse legacy servers based on CF.Besides that,an node scheduling algorithm of mix cloud load balancing was put forward based on forecasting through the analysis of typical characteristics of user traffic.Considering the performance loss of virtualization technology used in cloud ser-vices,an algorithm to acquire the optimized proportion of physical servers and virtual server was given from the perspective of minimizing total computing cost.