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Optimization of Distributed Network Flow Collector
Wrona, Jan ; Grégr, Matěj (referee) ; Žádník, Martin (advisor)
This thesis is focused on the optimization of distributed IP flow information collector. Nowadays, the centralized collector is a frequently used solution but is already reaching its performance limits in large scale and high-speed networks. The implementation of the distributed collector is in its early phase and it is necessary to look for solutions that will use it to its full potential. Therefore this thesis proposes a shared nothing architecture without a single point of failure. Using the above proposed architecture, the distributed collector is tolerant to the failure of at least one node. A distributed flow data analysis software, whose performance scales linearly with the number of nodes, is also part of this thesis.
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Implementation of high-availability cluster
HEŘMAN, Zdeněk
This bachelor thesis is dedicated to the part of IT (information technology) field focusing on technical background and providing of services. It describes how to create high availability computer systems and how to protect them from unexpected failures. Many state and private companies know that the right implementation is very important for provisioning of IT services. The thesis compares the early investment cost against the gained benefits. The objective of this work is to describe in detail the process of creating and imple mentation of the HA cluster based on operating system Linux with Proxmox extension. The demands on hardware and software equipment are gradually presented here. The physical connections and configurations of individual parts of the system are analyzed to find the optimal design. Several options of virtualization platforms which are available on the market are listed here. Demands on the financial investment and consequent implementation of the HA cluster depend on the selected type of solution.
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Available Solutions for Server Clustering
Bílek, Václav ; Čejka, Rudolf (referee) ; Kašpárek, Tomáš (advisor)
The goal of this master thesis is to analyze Open Source resources for loadbalancing and high availability, with aim on areas of its typical usage. These areas are particularly solutions of network infrastructure (routers, loadbalancers), generally network and internet services and parallel filesystems. Next part of this thesis is analysis of design, implementation and plans of subsequent advancement of an fast growing Internet project. The effect of this growth is necessity of solving scalability on all levels. The last part is performance analysis of individual loadbalancing methods in the Linux Virtual Server project.
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Virtualisation and Optimalisation of IT in a Production Company
Popelka, David ; Hégr, Robert (referee) ; Ondrák, Viktor (advisor)
The master‘s thesis deals with the implementation of server virtualization in the Entity production, s.r.o., which is a small company by it’s size, but needs modern IT technologies for the normal operations. The thesis shows how to reuse the server virtualization technologies from large corporations, that have been unavailable to small business companies in past. It also design show to optimize the current IT environment.
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High availability Microsoft Sql Server
Pyszko, Pavel ; Lattenberg, Ivo (referee) ; Zeman, Václav (advisor)
The thesis contains a complete theoretical overview of high availability technologies in Microsoft SQL Server. For each technology, guidance is provided for the deployment of technologies. Technologies are analyzed from a security perspective, they are determined advantages and disadvantages of using technology in practice and is determined the optimal variant of use of the technology. High availability technology are compared with each other and is given the availability of individual technologies in versions of MS SQL Server. The thesis contains three scenarios with practical examples of using technology for high availability in practice. It provides an analysis of high-availability features in Oracle and are subsequently compared high availability features in Oracle environments with high availability technology in MS SQL Server.
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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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High-availability solutions for network filesystems in Linux
Kravec, Martin ; Pavlíček, Luboš (advisor) ; Vadinský, Ondřej (referee)
The goal of this paper is to inform readers about high availability problematics and provide basic overview of free technologies you can use to achieve high availability. I focus mainly on solution of problems caused by hardware failures. Document can by used to gain basic knowledge needed for configuration of your own solution. In practical part I will try to realize high available cluster using free technologies and compare performance of different filesystems on this platform. Document will provide instructions for choosing and testing appropriate filesystem for specific configuration that can be used in production environment.
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Redundancy in data networks
Šoun, Jan ; Pavlíček, Luboš (advisor) ; Beneš, Jiří (referee)
This thesis focuses on redundancy in data networks and on technologies which are used to achieve high availability in network infrastructure. This thesis is based on industry standards published by well-known standardization authorities. One proprietary technology which can effectively replace these standards and simplify the whole network is also presented in more detail. The theoretical part individually describes all such technologies and standards. The practical part deals with an appropriate combination of these technologies and their application in a specific product environment. This work is meant to describe the whole concept of high availability in network infrastructure and should be instrumental in understanding how these technologies are deployed in practice.
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Red Hat Enterprise Linux
GARABIK, Bohumil
The paper introduces Red Hat company and its products. Basic concepts, e. g. Linux, distributions, clusters, high availability and several other concepts on this issue are explained. The differences between commercial and non-commercial Linux distributions are described further. Empirical part of the paper deals with the installation, configuration and the use of several key products of Red Hat company. The comparison of certain products and their characteristics with competitive products is also included in the paper.
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Virtualization aplication for monitoring networks
Kafka, Jan ; Pavlíček, Luboš (advisor) ; Gála, Libor (referee)
Virtualization is a promising information technology industry today. Whether for reasons of economies, achieve high availability of services, or facilitate the administration etc., gets more and more benefits.With the development of virtualization has been the transition from simple emulation, which was simply procesed as the code processor and simulated a complete computer, the hardware assisted emulation or Paravirtualization make the directing of this process has become almost negligible - literature generally indicates less than three percent. Virtualization also opens the way into the most demanding server applications, where in addition to high availability of services depends also on the optimal use of available hardware resources.The first part is a description of the reasons brought the benefits of deploying a virtualization server environment. The following section discusses virtualization techniques, their characteristics, advantages and disadvantages and most common server virtualization products. In the next chapter are explained the ways to achieve high service availability in a virtualized server environment, and examples of products of VMware, which is the industry leader. Chapter discussed concepts such as cold migration, live migration, technology VMware High Availability, VMware Fault Tolerance, and more. The last chapter is devoted to the practical part of the bachelor thesis. Describes hardware preparation for the experimental environment, the setup, configuration, problems during preparation laboratory network and the installation of dedicated virtualization product, VMware ESX 4.0 64bit. In last part will be describe installation and configuration monitoring software, OpenNMS on server virtualization. At the end, will be examination how fail activities impact on virtualization monitoring software and how rescue this software application VMware ESX 4.0.
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