Introduction

In a network of any size, it is only a matter of time before something stops working due to intentional or unintentional circumstances. Situations can vary widely depending on various faults, such as hardware failure, software bugs, human errors, or just about any incident that causes a disruption of a network service. Network monitoring is a practice where network management staff can keep a pulse check of the network they are responsible for.

There isn't one system to monitor everything. A good monitoring system is usually put together with various tools and some type of notification option to send alerts automatically. A Proxmox cluster is the sum of switches, network cables, and physical nodes acting as hosts and virtual machines. A monitoring system should be able to monitor all of these components. There are wide ranges of network monitoring tools available today, such as Icinga, Zabbix, Nagios, OpenNMS, Pandora FMS, Zenoss, and more. There are many more options that are...