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Reengineering of Two-Tier Applications
Oberreiter, Michal ; Rychlý, Marek (referee) ; Burget, Radek (advisor)
This thesis deals with an analysis of issues regarding reengineering of two-tier applications. Based on the available literature, a comprehensive description of methodology, strategies and approaches is compiled. Relevant software architectures are described, mutually compared and selected problems and their solutions are discussed. As a demonstration of the described methodology, a real-world application was chosen in collaboration with company I&C Energo. This application named Cable Management System is thoroughly analysed and issues concerning the current implementation are identified. Based on the gathered knowledge, a new reengineered cloud-native microservice-based solution is designed and implemented. The result of this thesis is a case study of reengineering application on concrete example of Cable Management System.
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Configurable Parallel Execution of System Tests within the Strimzi Project
Orsák, Maroš ; Rogalewicz, Adam (referee) ; Češka, Milan (advisor)
V poslednych rokoch mnoho spolocnosti prijalo Kubernetes a architekturu mikrosluzieb, ktoru umoznuje. Tato technologia otvorila nove moznosti nielen pre velke spolocnosti, ale aj pre malych vyvojarov softveru. Kubernetes je system riadenia kontajnerov a nedavno sa objavil novy koncept, ako efektivnejsie organizovat kontajnery - vzor operatora. Jeden takyto operator je vyvinuty a udrziavany v ramci open-source projektu s nazvom Strimzi. Projekt Strimzi spaja niekolko nastrojov, ktore sa staraju o nasadenie Apache Kafka na Kubernetes. Kedze Kafka je komplexny, horizontalne skalovatelny, distribuovany system, viete si predstavit, ze jeho instalacia je pomerne zlozita akcia. Preto jednou z najvacsich vyziev pouzivania Kubernetes je, ako efektivne a rychlo otestovat projekty ako Kafka a Strimzi a zaroven overit integraciu s inymi podobnymi produktmi. Zdroje, ktore potrebuje Kubernetes, su ovela narocnejsie v porovnani s nasadenim Kafka na virtualne stroje alebo typicke instancie kontajnerov. Aby sme tento problem vyriesili, prijali sme principy par- alelneho vykonavania a vytvorili mechanizmus v ramci systemovych testov Strimzi, ktory paralelne spusta testy iba proti jedinemu klastru Kubernetes. Okrem toho sme navrhli uplne novu architekturu pre end-to-end testy. Vylepsenia su zamerane na skalovatelnost a skratenie casu vykonavania . Prostrednictvom niekolkych experimentov tato praca ukazuje, ze navrhovany mechanizmus s roznymi konfiguraciami klastra Kubernetes (vratane pocet uzlov Kubernetes , pocet paralelne vykonavanych testov a sad ) vyrazne urychlil vykonavanie testov.
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Operator for MariaDB Galera Cluster in OpenShift
Javorský, Lukáš ; Malinka, Kamil (referee) ; Januš, Filip (advisor)
Hlavným cieľom bakalárskej práce je vytvoriť riadený systém databázových serverov, ktorý je schopný sa adaptovať a reagovať na ich aktuálne zaťaženie. Riešenie tohto problému nachádzame práve v najnovšej platforme, určenej pre riadenie a nasadenie OpenShift 4 postavenej na základoch softwaru Kubernetes. Použitím operátora ako mysle celého OpenShift clustra, zodpovedného za nasadenie, vyvažovanie záťaže, detekciu zlyhaní a zotavenie po zlyhaní MariaDB kontajneroch, môžeme zabezpečiť, že bude databáza bezproblémovo fungovať, dokonca aj pri najvyšších špičkách záťaže počas dňa. Na replikáciu medzi databázovými servermi sa využíva softvér Galera vo vnútri každého MariaDB servera, ktorý zabezpečuje konzistentný obsah.
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Utilization of Linux Containers for HW/SW Co-Design
Juřica, Jiří ; Přikryl, Zdeněk (referee) ; Hruška, Tomáš (advisor)
In this bachelor thesis a way of replacement standard virtual machines by Linux containers is described. The goal is to create a~fully working system for performing parallel jobs with prepared environments for software build and test purposes. For containerization the Docker platform was chosen, which is used with automation tool for computers preparation. The system is also connected with continuous integration tool called Jenkins. This solution proves that usage of the Linux containers is more efficient than older virtualization technologies. The due time of each job was shortened about 24 % in average. The main benefits of this thesis is the comparison of two ways of virtualization and the introduction to the Docker technology.
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Testing Open vSwitch and DPDK
Šabart, Otto ; Grégr, Matěj (referee) ; Čejka, Rudolf (advisor)
The project is about the virtual switch called Open vSwitch and its architecture. It deals with an acceleration of the switch mainly by using Data Plane Development Kit (DPDK). Furthermore, it describes the architecture of the DPDK kit and analyses the individual functional units. Furthermore, it describes the architecture of the DPDK kit, analyses the individual functional units and describes the possibilities of its configuration. Another part of the project describes the methodology chosen for a performance testing of virtual switches. Subsequently, this methodology was used to make a design and environment implementation for fully automatic Open vSwitch s DPDK performance testing with the use of automatic systems such as Koji, Jenkins, Beaker a VSperf. Simultaneously, the tools for automatic comparison of produced results were implemented. The created environment was then used for the performance measurement of several basic Open vSwitch configurations with and without the use of DPDK. The implemented measurements are discussed and evaluated in the project. The final project's stage provides a great amount of the enlargement and improvement of the implemented tests.
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Standardization of service orchestration
Sova, Jiří ; Gála, Libor (advisor) ; Vašíček, Petr (referee)
This thesis is focused on comparison of common standards used for service orchestration. Orchestration is one of main terms in service oriented architecture, which is a considerable trend in information systems development. This paper is divided into four main parts. The first chapter describes services as a part of current information systems. Definition of service oriented architecture is another subject, where service is a main component for system development and integration. Description of principles of service oriented architecture, that are describing its basis, is the last part of this chapter. The next chapter belongs to coordination of service cooperation, where we can find two basic approaches -- orchestration and choreography. The intention of this chapter is to create theoretical definition of both terms and to compare them. The third part is focused on orchestration methods standardization, where the main standard is BPEL. The history and reasons of creation are mentioned in the beginning, while next section concerns principles of BPEL. Following part describes the version of BPEL called BPEL4WS. Specification of its structure is a main primer for comparison with the latest version named WS-BPEL. The major changes are mentioned in this section. The last chapter is devoted to practical comparison of standards mentioned above. At first, there is created a sample process, based on real situation. The process contains the most important parts of BPEL language. Afterwards, the process is divided into parts, where each of them represents one activity. During description of these parts there is made the above mentioned comparison. The end of the practical part contains main conclusions that were found in this chapter.
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