This thesis presents the different ways that have been achieved to improve and widen the interaction possibilities between LiveLab users. LiveLab is a virtual laboratory used at IDA (Institutionen för datavetenskap / The Department of Computer and Information Sciences) at Linköpings Universitet. This virtual laboratory is a virtual machine running an Kubuntu Linux 1 distribution thanks to VMware 2 Player. It was created at the HCS (Human-Centered Systems) division of IDA. Aiming to be used in more and more courses, LiveLab may present a lack of certain functionalities. Thus thesis tries to shows how the development of applications may fulfil this lack.

Context Cloud Computing is the new trend in the IT industry. Traditionally obtaining servers was quiet time consuming for companies. The whole process of research on what kind of hardware to buy, get budget approval, purchase the hardware and get access to the servers could take weeks or months. In order to save time and reduce expenses, most companies are moving towards the cloud. One of the known cloud providers is Amazon Elastic Compute Cloud (EC2). Amazon EC2 makes it easy for companies to obtain virtual servers (known as computer instances) in a cloud quickly and inexpensively. Another advantage of using Amazon EC2 is the flexibility that they offer, so the companies can even import/export the Virtual Machines (VM) that they have built which meets the companies IT security, configuration, management and compliance requirements into Amazon EC2. Objectives In this thesis, we investigate importing a VM running on VMware into Amazon EC2. In addition, we make a performance comparison between a VM running on VMware and the VM with same image running on Amazon EC2. Methods A Case study research has been done to select a persistent method to migrate VMware VMs to Amazon EC2. In addition an experimental research is conducted to measure the performance of Virtual Machine running on VMware and compare it with same Virtual Machine running on EC2. We measure the performance in terms of CPU, memory utilization as well as disk read/write speed using well-known open-source benchmarks from Phoronix Test Suite (PTS). Results Investigation on importing VM snapshots (VMDK, VHD and RAW format) to EC2 was done using three methods provided by AWS. Comparison of performance was done by running each benchmark for 25 times on each Virtual Machine. Conclusions Importing VM to EC2 was successful only with RAW format and replication was not successful as AWS installs some software and drivers while importing the VM to EC2. Migrated EC2 VM performs better than on premise VMware VM in terms of CPU, memory utilization and disk read/write speed.

The purpose of my master's thesis is to make a proposal for optimalization of desktop infrastructure using virtualization. The master's thesis is divided into three main parts. First one is engaged in theoretical ground about virtualization. Second part is dedicated to analysis of current state of desktop infrastructure in company and the third contains proposal to modernization of existing infrastructure including project management

The purpose of this work is to create a functional Key Management Server (KMS) with basic functionality for the vSphere 7.0 platform. It should communicate with vCenter and together provide the functionality to encrypt individual virtual machines. Commercial solutions in this area are very expensive and therefore the question arose whether the entire server can be implemented using freely available tools. Since vCenter uses the publicly available KMIP protocol to communicate with KMS, it turns out to be possible. The resulting implementation is based on the Ubuntu 20.04 operating system. The PyKMIP library for python 3.9 was used for the application logic and ETCD as storage. To connect the application and storage, a custom module was created. Bash scripts were created for whole installation and all of the necessary configuration. The overall result is fully functional and no flaws were found during testing. This work was done in cooperation with Master Internet, s.r.o.

Diplomová práca sa zaoberá návrhom riešenia pre fiktívnu spoločnosť XYZ s.r.o., ako ušetriť náklady vybudovaním výukového prostredia pre jej zamestnancov za účelom rozvíjať ich zručnosti a skúsenosti v danom obore. Toto riešenie môže byť taktiež použité zamestnancami a študentami univerzít, aby si mohli otestovať podnikový softvér pre výukové účely. Autor zdôrazňuje výhody používania Cloud Computingu a otvoreného softvéru, ako aj využitie technológie Docker kontajnerov v kombinácii s komerčným softvérom ako je napr. IBM WebSphere Application Server.

Auch eingefleischte LINUX-Nutzer bekommen mal eine eMail mit Wordanhang oder eine Coreldrawgrafik. Um Dokumente dieser Art anschauen zu können bleibt oft kein anderer Ausweg, als Windows zu booten. VMware bietet eine elegante Möglichkeit, mehrere Betriebssysteme auf einer Maschine gleichzeitig nutzen zu können. Natürlich sind dem Einsatz von VMware kaum Grenzen gesetzt.

Fifty percent of Fortune 500 companies trust Xen, an open-source bare-metal hypervisor, to virtualize their websites and mission critical services in the cloud. Providing superior fault tolerance, scalability, and migration, virtualization allows these companies to run several isolated operating systems simultaneously on the same physical server. These isolated operating systems, called virtual machines, require a virtual traffic guard to cooperate with one another. This guard known as the Credit2 scheduler along with the newest Xen hypervisor was recently developed to supersede the older schedulers. Since wasted CPU cycles can be costly, the Credit2 prototype must undergo significant performance validation before being released into production. Furthermore, leading commercial virtualization products, including VMWare and Microsoft Hyper-V frequently adopt Xen's proven technologies. This thesis provides quantitative performance measurements of the Credit1 and Credit2 schedulers, and provides recommendations for building hypervisor schedulers.

Virtualisering av datorer rent generellt innebär att man delar upp hela eller delar av enmaskinkonfiguration i flera exekveringsmiljöer. Det är inte bara datorn i sig som kanvirtualiseras utan även delar av det, såsom minnen, lagring och nätverk. Virtualiseringanvänds ofta för att kunna nyttja systemets resurser mer effektivt. En hypervisorfungerar som ett lager mellan operativsystemet och den underliggande hårdvaran. Meden hypervisor har virtuella maskiner sitt egna operativsystems kärna. En annan tekniksom bortser från detta mellanlager kallas zoner. Zoner är en naturlig del avoperativsystemet och alla instanser delar på samma kärna, vilket inte ger någon extraoverhead. Problemet är att hypervisorn är en resurskrävande teknik. Genom att användazoner kan detta problem undkommas genom att ta bort hypervisorlagret och istället köramed instanser som kommunicerar direkt med operativsystemets kärna. Detta ärteoretiskt grundande och ingen tidigare forskning har utförts, därmed påkallades dennautredning. För att belysa problemet använde vi oss av Apache som webbserver.Verktyget Httperf användes för att kunna utföra belastningstester mot webbservern.Genom att göra detta kunde vi identifiera att den virtualiserade servern presterade sämreän en fysisk server (referensmaskin). Även att den nyare tekniken zoner bidrar till lägreoverhead, vilket gör att systemet presterar bättre än med den traditionella hypervisorn.För att styrka vår teori utfördes två tester. Det första testet bestod utav en virtualiseradserver, andra testet bestod av tre virtuella servrar. Anledningen var att se hur de olikateknikerna presterade vid olika scenarion. Det visade sig i båda fallen att zonerpresterade bättre och att det inte tappade lika mycket i prestanda i förhållande tillreferensmaskinerna. / Virtualization of computers in general means that the whole or parts of a machineconfiguration is split in multiple execution enviornments. It is not just the computeritself that can be virtualized, but also the resources such as memory, storage andnetworking. Virtualization is often used to utilize system resources more efficient. Ahypervisor acts as a layer between the operating system and the underlying hardware.With a hypervisor a virtual machine has its own operating system kernel. Anothertechnique that doesn't use this middle layer is called zones. Zones are a natural part ofthe operating system and all instances share the same core, this does not provide anyadditional overhead. The problem with hypervisors is that it is a rescource-demandingtechnique. The advantage with zones is that you should be able to avoid the problem byremoving the hypervisor layer and instead run instances that communicate directly tothe operating system kernel. This is just a theoretical foundation. No previous researchhas been done, which result in this investigation. To illustrate the problem we usedApache as a web server. Httperf will be used as a tool to benchmark the web server. Bydoing this we were able to identify that the virtualized server did not perform quite aswell as a physical server. Also that the new technique (zones) did contribute with loweroverhead, making the system perform better than the traditional hypervisor. In order toprove our theory two tests were performed. The first test consisted of one virtual serverand the other test consisted of three virtual servers. The reason behind this was to seehow the different techniques performed in different scenarios. In both cases we foundthat zones performed better and did not drop as much performance in relation to ourreference machines.

The thesis deals with the topic of complexity of current IT. As a result, the consolidation of servers using virtualization is the answer to permanently growing complexity of server infrastructure. The thesis summarizes the basic aspects of this issue, compares the contributions and tries to analyze problems which can emerge. Further, it points a way of consolidation journey, compares different types of virtualization and elaborates the contributions of virtualization for corporate IS/ICT and its flexibility of solution. It analyzes present state of the market with virtualization tools, describes and compares some products of the market key players and analyzes the new opportunities for virtualization, e. g. the virtual desktop infrastructure. At the end, it suggests an approach for consolidated project solution in practice and tries to show some basic steps which should not be omitted. Besides the complex view to the topic, the thesis also presents the contributions, risks and questions to be raised and, at least partly, answers these questions.

Virtualisering är en abstraktion av underliggande fysisk hårdvara som omvandlas till en förutbestämd struktur av hårdvara via mjukvara. En virtuell maskin kan då vara frånkopplad från hårdvaran. Virtualisering tillåter hårdvara att delas upp som flera separata virtuella hårdvaror vilket kan ske transparent för operativsystem i virtuella maskiner. Virtualisering ökade under 90-talet och det utvecklades två virtualiseringsteknologier: (i) den fullständiga systemvirtualisering och (ii) parallell systemvirtualisering. Fullständig systemvirtualisering erbjuder abstraktion som utgör en frånkoppling från hårdvara. Operativsystem som använder en virtuell maskin känner då inte till att virtualisering skett med resultatet att alla operativsystem kan användas. Parallell systemvirtualisering använder en delvis abstraktion då operativsystem modifieras för att virtuell maskin skall vara medveten om att virtualisering utförts för att möjliggöra för prestandaförbättringar. Den problemställningen som ställts försöker utröna vilken av dessa två teknologier som kan leverera bästa prestanda över FTP. Experiment har då utförts och visade att det är inga skillnader mellan teknologierna.