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Memory Reduction of Stateful Network Traffic Processing
Hlaváček, Martin ; Puš, Viktor (referee) ; Kořenek, Jan (advisor)
This master thesis deals with the problems of memory reduction in the stateful network traffic processing. Its goal is to explore new possibilities of memory reduction during network processing. As an introduction this thesis provides motivation and reasons for need to search new method for the memory reduction. In the following part there are theoretical analyses of NetFlow technology and two basic methods which can in principle reduce memory demands of stateful processing. Later on, there is described the design and implementation of solution which contains the application of these two methods to NetFlow architecture. The final part of this work summarizes the main properties of this solution during interaction with real data.
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Design and Implementation of SAP CAR with Automatic Disaster Recovery Function
Svitálek, Petr ; Dierzé, Lukáš (referee) ; Luhan, Jan (advisor)
The main purpose of this master's thesis is to propose and implement a SAP CAR (customer activity repository) solution as an application into the current enterprise information system. Following the analysis of the existing system, there will be a solution created, which is fulfilling the customer demands and at the same time it is feasible under given conditions and in the current environment. This project is closely related with addressing the disaster recovery issue for making the system highly available. The final design is implemented, tested and then handed over to the customer.
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Cooling of Data Center
Ostrezi, Jakub ; Katolický, Jaroslav (referee) ; Štětina, Josef (advisor)
The aim of this work is to design data center placed into an ISO container used for transportation. Maximization of the space efficiency and minimization of the running costs are primary. This work also contains a measurement of data center electronic parts power consumption, a computational fluid dynamics model, a simulation of external thermal gains and a 3D model with basic technical drawings.
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Asynchronous Task Processing in PCS Project
Pospíšil, Michal ; Pavela, Jiří (referee) ; Rogalewicz, Adam (advisor)
Projekt PCS je distribuovaná aplikácia. Z toho vyplýva, že potrebuje spôsob ako spúšťať akcie vo vzdialených inštanciách PCS. Cieľom tejto práce je vyvinúť minimálne životaschopné riešenie pre spúšťanie akcií cez REST API, ktoré je implementované metódami asynchrónneho programovania. Tieto akcie však nie sú implementované asynchrónne, takže nemôžu byť spustené priamo z asynchrónneho kódu. REST API je preto napojené na asynchrónny plánovač, ktorý obchádza toto obmedzenie spúšťaním akcií v sade procesov (process pool). Plánovač skrýva akcie za abstrakčnú vrstvu úloh, ktoré uchovávajú informácie o stave a výsledkoch akcií. Všetky akcie potrebujú posielať aktualizácie svojho stavu klientom v reálnom čase. Toto je dosiahnuté jednosmerným komunikačným kanálom medzi akciami a plánovačom, ktorý správy od akcií ukladá do úloh. REST API umožňuje vytváranie, kontrolu stavu a rušenie spracovania úloh. Klient teda môže opakovane žiadať o stav úlohy a takto zobrazovať aktualizácie stavu z akcií. Klient tiež môže zrušiť spracovanie úloh, ktoré bežia príliš dlho.
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Cluster Solution for HA OpenVPN
Dokoupil, Jiří ; Kašpárek, Tomáš (referee) ; Halfar, Patrik (advisor)
The aim of this bachelor's thesis is to analyze the possibilities for running the OpenVPN daemon in a cluster and to implement such a solution. At first, the thesis analyzes current technologies and possible approaches to this matter. Next there's one possible solution described more and implemented. In the end there are results being analyzed, mostly by describing the tests, that took place with the implemented solution.
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Study Statistics for Portal
Gruzová, Michaela ; Eysselt, Miloš (referee) ; Marušinec, Jaromír (advisor)
The master's thesis discusses the project and implementation of study statistics of the Portal of Brno University of Technology. It analyses the structure of the BUT portal and the technologies used for its creation. The technologies we are speaking about are the server-side scripting language PHP, query language SQL and cascading style sheets CSS. It describes the Oracle database technology and the st01 database scheme, a large scheme containing data used by information systems. It analyses the initial state of web applications and the situation at single faculties. The thesis analyses different solutions of certain parts of the application and studies the most appropriate ones. At the end it describes the implementation of study statistics and its integration into the central information system.
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Cluster analysis of data traffic
Nagyová, Simona ; Martinásek, Zdeněk (referee) ; Blažek, Petr (advisor)
This thesis is meant to present the methods of cluster analysis, their use for detecting network traffic anomalies. It deals with various types of cyber attacks particularly DoS (DDoS) attacks. It contains a list of well-known DoS attacks. Also includes a program in Python, using the k-means method for detection of anomalous traffic.
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Design of reliable VLAN-based enterprise data nework
Vrablic, Pavol ; Krkoš, Radko (referee) ; Novotný, Vít (advisor)
The main aim of this work is to identify the potential issues within a robust network to provide a highly reliable and fault free service – with a smooth and reliable functionality of critical services. This work contains new methods of branch networking and virtualization that is increasingly used in enterprise networks. It is important to note that computer clustering provides the functionality of critical services that can surpass potential partial failures and network QoS; which overall, achieves a high quality and reliable service.
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CDN and clustering in GNU/Linux with performance testing
Mikulka, Pavel ; Pelka, Tomáš (referee) ; Šimek, Milan (advisor)
Fault tolerance is essential in a production-grade service delivery network. One of the solution is build a clustered environment to keep system failure to a minimum. This thesis examines the use of high availability and load balancing services using open source tools in GNU/Linux. The thesis discusses some general technologies of high availability computing as virtualization, synchronization and mirroring. To build relatively cheap high availability clusters is suitable DRDB tool. DRDB is tool for build synchronized Linux block devices. This paper also examines Linux-HA project, Redhat Cluster Suite, LVS, etc. Content Delivery Networks (CDN) replicate content over several mirrored web servers strategically placed at various locations in order to deal with the flash crowds. A CDN has some combination a request-routing and replication mechanism. Thus CDNs offer fast and reliable applications and services by distributing content to cache servers located close to end-users. This work examines open-source CDNs Globule and CoralCDN and test performance of this CDNs in global deployment.
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