High availability system for control and monitoring

Nejc Zupan (2014) High availability system for control and monitoring. EngD thesis.

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Abstract

As we see an increase in the use of web services, having a control over networks became a priority. More and more services are available online and consequently, the number of users has increased. Since our aim is to get more stability, we are using high available monitoring system. In this thesis we addressed few protocols and systems for monitoring networks, based on which we chose the most appropriate ones and described them in a greater detail. Following that description is experimental part in which we set up a high available monitoring system that ensures smooth user interaction even during failover to the other node. The solution includes monitoring system Zabbix which communicates with the agents via the selected SNMP protocol. For failover we used open-source programs like Pacemaker, Corosync and Heartbeat, while we used Nginx for monitoring web page. Data are stored in the PostgreSQL database that operates in active-passive mode and also supports failover between nodes.

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