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Diagnostics of GNU/Linux-Based Systems
Hofbauer, Martin ; Doležal, Jan (referee) ; Smrž, Pavel (advisor)
This bachelor thesis focuses on the creation of the light-weighted program, which collects and saves information from GNU/Linux-based systems. Designed and developed solution can also inform about errors in the operating system and its unusual behavior. The program aims at maximum reliability, isolation of individual parts, and ease of use. The theoretical part describes problems of already existing solutions and focuses on the system monitoring context. The practical part then describes program architecture and its implementation. The program was successfully deployed in the company BringAuto, which collaborated with the creation of this thesis. It turned out that the program is able to record information from the operating system without its big load. In case of partial system failure, the program helped with finding its causes.
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Support for Dynamic Config Reload Inside Rsyslog
Lakatos, Attila ; Češka, Milan (referee) ; Rogalewicz, Adam (advisor)
Logy sú jedným z najcennejších aktív, pokiaľ ide o správu IT systému a monitoring. Keďže zaznamenávajú každú činnosť, ktorá sa uskutočnila na stroji, logy poskytujú prehľad správ- covi systému aby vedel zistiť pôvod problémov, ktoré môžu ovplyvniť výkon, súlad a bezpečnosť. Z tohto dôvodu je možné softvérový nástroj rsyslog použiť, keďže ponúka možnosť prijímať vstupy zo širokej škály zdrojov, transformovať ich a odosielať výsledky rôznym destináciám na základe súboru pravidiel. Jedným z nedostatkov tohto softvéru v súčasnosti je to, že ho je potrebné reštartovať, aby akceptoval aktualizované zmeny v pravidlách. Autor tejto diplomovej práce poukazuje na to, s akými typmi problémov sa môže stretnúť užívateľ počas reštartu nástroja. Medzi najkritickejšie patria strata správ vstupujúcich do systému a narušenie TCP/UDP spojenia, aj keď neboli vykonané žiadne zmeny v pravidlách. Cieľom diplomovej práce je navrhnúť a implementovať riešenie, ktoré umožňuje používateľom dynamicky znovu načítať konfiguráciu základných komponentov bez potreby úplného reštartu. Navrhované zmeny sú zamerané aj na riešenie problémov, ktoré boli odhalené počas vývoja ako aj na zvýšenie výkonu opätovným použitím už exis- tujúcich zdrojov.
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Message Logging System
Vrzal, Miroslav ; Křivka, Zbyněk (referee) ; Zendulka, Jaroslav (advisor)
This master's thesis in the first part describes the AS/400 and its message system and concentrates especially on the following areas: predefinition of messages and their storing, types of messages and levels of their importance, work with variables included in message text and ways of sending messages. On the basis of AS/400 message system is designed and implemented message log system for the application loggin for Aegis. s.r.o. The analysis of the message log systems is also a part of the work. The syslog and syslog-ngused in UNIX systems are described, concerning types of messages, importance of messages and filtering and storing of messages. It further describes possibilities of application logging based on Java in the specific case of the Log4jutility. In the second part thesis describes own log message systems design and implementation.
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Log Analysis and Hardware Utilization
Kuchyňka, Jiří ; Homoliak, Ivan (referee) ; Očenášek, Pavel (advisor)
The goal of this thesis is to design and implement a system for long-term monitoring of the state of Linux systems located in a production environment. The thesis focuses mainly on situation in which the system does not have the ability to send the collected data for analysis over the network, so data collection must be completely automatic and data must be transferred from monitored systems to a central system for collection, analysis and visualization. A substantial part of the work is devoted to the design and implementation of a web application used to export data from monitored systems to the transmission medium and import them from it to the system for data collection. The resulting solution aims to simplify the collection of data from systems, previously performed directly by system administrators, so that it can be performed by anyone who can physically approach the monitored system and thus reduce the costs associated with monitoring these remote systems.
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Log Analysis Using TeskaLab Platform
Kocinec, Patrik ; Jeřábek, Kamil (referee) ; Ryšavý, Ondřej (advisor)
This work describes the usage of machine learning methods for processing logging information on LogMan.io system. The work includes a description of methods of processing logging information for the purposes of security monitoring, as well as machine learning methods and principles of data processing. Subsequently, the work focuses on the introduction of the LogMan.io system and its components. Then, an application for processing logging information is designed and implemented on LogMan.io system, which uses machine learning methods to detect malign domains. When implementing the application for model training, several methods were used focusing on the accuracy of detection.
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User tools to support automated functional testing of prototypes in product development
Grabovský, Štěpán ; Macháček, Jiří (referee) ; Svoboda, Radomír (advisor)
This work deals with develop of PC application to support automated testing of prototypes, which are developing in Honeywell International, Inc., ACS division in Brno. There was created a PC software witch executes testing process based on input script files. For select script files and specify other necessary information was designed a graphic user interface. Testing information are being presented in a program information control in real-time as the same as results of tests. The application also allow to users save the log file. The program has been realized in C# programing language.
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Battery powered datalogger with CPU
Andrýs, Jiří ; Beran, Jan (referee) ; Bradáč, Zdeněk (advisor)
In this design are mentioned processes of power consumption reduction of battery-powered devices.Execution of a project is software SPI for MMC card and file system FAT16 without extension of VFAT (Virtual File Allocation Table) – LFN (Long File Names). Hardware design consists of boost power supply, linear stabilizer, external RTC (Real Time Clock), IRQ low power modul, interface for MMC (Multi Media Card) and circuits for RS-232, RS-485. There is either a design of analog measuring interface.
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Dohled firemní infrastruktury pomocí nástroje Zabbix s integrací log manageru ELISA
Jelínek, Roman
Jelinek, R. Monitoring of Company Infrastructure using Zabbix Tool with Integra-tion of ELISA Log Manager. Master's Thesis. Brno: Mendel University in Brno, 2023. This thesis deals with the creation of a monitoring system for a company's infrastructure. The monitoring system is implemented using the Zabbix monitoring tool, configured according to the organization's requirements. Furthermore, log files are analyzed using the ELISA log manager, and the logs are subsequently evaluated based on created rules. As part of this thesis, the integration of these two systems was configured to enable monitor alerts sent from the ELISA system within the Zabbix interface.
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Biomass - a promising source of energy
Pauk, Marek ; Hudák, Igor (referee) ; Skryja, Pavel (advisor)
The thesis deals with possibility of exchanging gas boiler for biomass boiler for heating communal buildings. The goal is to count economic and environmental impacts of combusting biomass compared to combusting natural gas. The last two parts of the thesis proves that. The beginning of the thesis contains introduction of getting biomass for communal boiler room and suggests different boiler constructions. Then it divides types of biomasses and determines which are suitable for energy purposes specifically for combustion. The calculation part solves heating losses and necessary heat output for example buildings. Then the thesis suggests possible solutions of heating communal buildings. One of the solutions is communal boiler room with one boiler with 350 kW heat output, second solution is with two boilers with 200kW and 150kW heat outputs, last solution describes just exchange of old boilers for new ones that can combust biomass. Then all the solutions are compared for financial return, which is 6 years for both communal boiler rooms and around 13 years for solution that counts with exchanging boilers. It describes ecological impact of combustion of these two fuels. There it describes amount of emission of harmful substances during their combustion. At the end it explains carbon dioxide neutrality of biomass combustion. Biomass has several times higher emissions at the place of production during combustion then natural gas, but it is still more environmentally friendly.
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