Spremljanje sistemskih virov in delovanja vtičnikov spletne učilnice

VRH, VID (author), Bešter, Janez (mentor)

V tej diplomski nalogi sem se ukvarjal s spremljanjem uporabe sistemskih virov strežnika in delovanja spletne učilnice pri množični uporabi le-te. Pri tem sem želel ugotoviti tudi, ali je infrastruktura, ki jo uporabljamo v Centru Univerze v Ljubljani za uporabo IKT v pedagoškem procesu, ustrezna za morebitne večje obremenitve strežnika. Preden sem se lotil samega spremljanja delovanja naprav, sem najprej izbral ustrezno orodje, s katerim sem izvedel spremljanje naprav. Nato sem na vsebnike (angl. container), ki sem jih pripravil v virtualizacijskem okolju, namestil strežnike podatkovne baze, na katerih sem nastavil še podvojevanje podatkovnih baz, spletne strežnike s spletnimi učilnicami in osrednji strežnik za orodje za spremljanje delovanja naprav. Na vsebnike s podatkovnimi bazami in spletnimi strežniki sem namestil še agente, ki so na osrednji strežnik posredovali podatke o stanju naprav. Za spremljanje naprav sem izbral orodje Zabbix. Da je prišlo do večjih obremenitev strežnika, so tri skupine študentov reševale naloge, ki so bile v spletnih učilnicah Moodle ustvarjene z uporabo vtičnika STACK. Ta je namenjen ustvarjanju nalog s področja matematike, predstavlja pa verjetno za strežnik najbolj zahteven vtičnik iz nabora orodij, ki jih Center v svoji infrastrukturi podpira. Pri največji skupini študentov sem izmeril skoraj 45-odstotno obremenitev procesorja in uporabo malo več kot 670 MB delovnega pomnilnika. Internetni promet na omrežni kartici je najvišje vrednosti dosegel pri 14,85 Mbps v smeri proti strežniku in 15,7 Mbps v smeri iz strežnika v primeru spletnega strežnika ter 11,1 Mbps dohodnega in 64,89 Mbps izhodnega prometa pri strežniku podatkovne baze. Takšen internetni promet predstavlja le del od 1 Gbps internetne povezave, ki je speljana do strežnika.

• Language: Slovenian
• Keywords: spremljanje sistemskih virov, delovanje spletne učilnice, Zabbix, Moodle, STACK
• Work type: Bachelor thesis/paper
• Organization: FE - Faculty of Electrical Engineering
• Year: 2022
• PID: 20.500.12556/RUL-140396
• COBISS.SI-ID: 121815811
• Publication date in RUL: 14.09.2022

Secondary language

• Language: English
• Title: Monitoring of system resources and performance of e-classroom plugins

Abstract

In this diploma thesis, I dealt with monitoring the consumption of server system resources and the operation of the online classroom during its mass use. I also wanted to find out whether the infrastructure we use at the Center for the use of ICT in the pedagogical process is suitable for potential heavy server loads. Before I started with monitoring of the performance of the devices, I first selected the appropriate tool with which I was to monitor the devices. Then I installed the database servers on the containers I prepared in the virtual environment, on which I also set up database replication, web servers with online classrooms, and a central server for the device monitoring tool. I also installed agents on the containers with databases and web servers, which forwarded information about the state of the devices to the central server. I chose the Zabbix tool to monitor the devices. In order to increase the load on the server, three groups of students were asked to solve tasks that were created in Moodle online classrooms using the STACK plugin. The STACK plugin is intended for creating questions from the field of mathematics, and it is probably the most demanding plugin for the server from the set of tools that the Center supports in its infrastructure. When conducting the test with the largest group of students, I measured nearly 45 percent CPU load and just over 670 MB of RAM usage. Internet traffic at the network card of the servers peaked at 14,85 Mbps in the inbound and at 15,7 Mbps in the outbound direction in case of web servers and at 11,1 Mbps in the inbound and 64,89 Mbps in the outbound direction in case of database server. Such internet traffic is only a fraction of the 1 Gbps internet connection to the server.

• Keywords: system resource monitoring, online classroom operation, Zabbix, Moodle, STACK