【摘要】：隨著云計算的發(fā)展,云主機的應(yīng)用領(lǐng)域越來越廣,大部分云計算提供商都提供了公有云下的云主機租用服務(wù),該服務(wù)也受到了各行各業(yè)的用戶的青睞,用戶按需租用,并可以根據(jù)業(yè)務(wù)需求靈活調(diào)配資源,幫助用戶快速構(gòu)建項目,安全部署應(yīng)用,降低開發(fā)運維的難度和整體IT成本。多數(shù)云主機提供的是面向公眾的標準化服務(wù),而不能在某些特定情景下最大地發(fā)揮它的優(yōu)勢,另外,大部分云主機以Xen和KVM這種“重型”的虛擬化技術(shù)為主,Docker容器技術(shù)的出現(xiàn),逐漸模糊了PaaS和IaaS之間嚴格的界限,其輕量級虛擬化的特性逐漸把傳統(tǒng)的應(yīng)用開發(fā)和運維機制變成了一種全新的方式。本論文主要研究和實現(xiàn)了一套基于Docker的私有云主機系統(tǒng),該系統(tǒng)主要面向項目研發(fā)團隊。本文分析了該云主機系統(tǒng)的需求,按照需求對該系統(tǒng)進行了模塊劃分,并詳細地設(shè)計了基于Docker的云主機系統(tǒng)的架構(gòu),在此基礎(chǔ)之上,首先分析了Docker Swarm內(nèi)置的調(diào)度策略,并對其不足進行總結(jié),針對不足之處分別給出解決方案,綜合這些解決方案,提出了多維度的動態(tài)權(quán)重的調(diào)度策略,既考慮了節(jié)點上各種類型的資源使用情況,又考慮了待調(diào)度容器偏重的資源類型,以此來均衡集群中各節(jié)點的資源使用情況,提高系統(tǒng)的穩(wěn)定性。其次,根據(jù)Docker鏡像和容器分層的存儲方式,提出了基于私有倉庫的遷移方案來縮短遷移總時間,降低傳輸數(shù)據(jù)量,提高遷移效率。然后,為了契合Docker容器的微服務(wù)思維,每個容器盡可能地只運行一個服務(wù)進程,提出了堡壘機架構(gòu)的多級認證的解決方案,該方案既滿足了多客戶端登錄的需求,又避免了在容器中安裝多余的ssh服務(wù),同時降低了遠程登錄管理的復雜度。最后利用Docker容器和鏡像的優(yōu)勢,提出一種易擴展的持續(xù)集成的模式,根據(jù)實際項目的需求,可橫向擴展代碼管理容器,處理項目中依賴關(guān)系并實現(xiàn)自動化部署,提高了持續(xù)集成的靈活性,可以幫助項目團隊人員快速部署項目,提升工作效率。另外,本文對實現(xiàn)的負載調(diào)度、容器遷移、遠程登錄和持續(xù)集成四個模塊進行功能測試和性能測試,證明了本文提出的解決方案不僅降低了項目人員的繁瑣的工作量,提高了工作效率,而且均衡了集群中各節(jié)點資源的使用情況,提高了系統(tǒng)的高效性和穩(wěn)定性。
[Abstract]:With the development of cloud computing, cloud host applications become more and more widespread, most cloud computing providers provide cloud host rental services under the public cloud, this service is also favored by users in various industries, users rent on demand. And can flexibly allocate resources according to the business needs, help users to quickly build projects, secure deployment of applications, reduce the difficulty of development and maintenance and overall IT costs. Most cloud hosts offer standardized services to the public that do not maximize their benefits in certain contexts, and most cloud hosts are dominated by "heavy" virtualization technologies such as Xen and KVM. With the emergence of Docker container technology, the strict boundary between PaaS and IaaS is gradually blurred, and its lightweight virtualization has gradually turned the traditional application development and operation and maintenance mechanism into a new way. This paper mainly studies and implements a set of private cloud host system based on Docker, which is mainly oriented to the project research and development team. In this paper, the requirements of the cloud host system are analyzed, the modules of the system are divided according to the requirement, and the architecture of the cloud host system based on Docker is designed in detail. On this basis, firstly, the scheduling strategy of Docker Swarm is analyzed. And summarize its shortcomings, give solutions to the shortcomings, synthesize these solutions, put forward a multi-dimensional dynamic weight scheduling strategy, not only consider the use of various types of resources on the node, but also put forward a multi-dimensional dynamic weight scheduling strategy, both considering the use of various types of resources on the node, In order to balance the resource usage of each node in the cluster and to improve the stability of the system, the resource types of the container to be scheduled are considered to balance the resource usage of each node in the cluster. Secondly, according to the storage mode of Docker mirror and container tiering, this paper proposes a migration scheme based on private warehouse to shorten the total migration time, reduce the amount of data transferred, and improve the migration efficiency. Then, in order to fit the micro-service thinking of Docker container, each container runs only one service process as far as possible, and puts forward a multi-level authentication solution of barrier machine architecture, which not only meets the requirement of multi-client login. It also avoids installing redundant ssh services in the container and reduces the complexity of remote login management. Finally, taking advantage of the advantages of Docker container and mirror, this paper puts forward an easy-to-expand mode of continuous integration. According to the requirements of the actual project, it can scale-out the code management container, deal with the dependencies in the project and realize automatic deployment. Increased flexibility in continuous integration can help project teams quickly deploy projects and improve productivity. In addition, the paper tests the function and performance of the four modules of load scheduling, container migration, remote login and continuous integration, which proves that the solution proposed in this paper not only reduces the tedious workload of the project personnel, but also proves that the solution proposed in this paper can not only reduce the tedious workload of the project personnel. It improves the efficiency of the system, balances the use of the node resources in the cluster, and improves the efficiency and stability of the system.
【學位授予單位】：電子科技大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：TP393.09

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