How to monitor server memory usage with Nagios Remote Plugin Executor (NRPE)

In a previous tutorial, we have seen how we can set up Nagios Remote Plugin Executor (NRPE) in an existing Nagios setup. However, the scripts and plugins needed to monitor memory usage do not come with stock Nagios. In this tutorial, we will see how we can configure NRPE to monitor RAM usage of a […]
Continue reading…

 

How to set up a web-based lightweight system monitor on Linux

Sometimes we, as a normal user or a system admin, need to know how well our system is running. Many questions related to system status can be answered by checking log files generated by active services. However, inspecting every bit of log files is not easy even for seasoned system admins. That is why they […]
Continue reading…

 

How to monitor a Linux server and desktop remotely from web browser

When it comes to monitoring a Linux box, there are more than enough options to choose from. While there are many production-quality monitoring solutions (e.g., Nagios, Zabbix, Zenoss), boasting of fancy UI, monitoring scalability, comprehensive reporting capabilities, etc., these solutions are probably an overkill for most of us end users. If all you need is […]
Continue reading…

 

How to set up Nagios Remote Plugin Executor (NRPE) in Linux

As far as network management is concerned, Nagios is one of the most powerful tools. Nagios can monitor the reachability of remote hosts, as well as the state of services running on them. However, what if we want to monitor something other than network services for a remote host? For example, we may want to […]
Continue reading…

 

How to monitor common services with Nagios

Nagios comes with a wide range of built-in scripts for monitoring services. This tutorial will cover the process of using some of these scripts for checking common services, such as MySQL, Apache web server, DNS, etc. To keep the article focused on service monitoring, we will not be configuring hostgroups or templates, as they have […]
Continue reading…

 

How to configure Nagios for audio alerts and mobile notifications

In a Network Operation Centre (NOC) environment, setting up alerts is extremely important. As one of the most popular NOC monitoring systems, Nagios features powerful alerting services. Alerts generated by Nagios can be sent out in various means, so that they can be acted upon immediately. Email notification is the most commonly used option. This […]
Continue reading…

 

How to install and configure Nagios on Linux

Nagios is one of the most powerful network monitoring systems, which is widely used in the industry. It can actively monitor any network, and generate audio/email warnings and alerts when any problem is detected. The check types and alert timers are fully customizable. Another incredible capability of Nagios is that it can monitor both hosts […]
Continue reading…

 

How to install and configure Conky on Linux

Conky is a light-weight system monitoring tool combined with a fully-customized desktop theme, which can completely change your Linux desktop experience. Using Conky, you will get a fully personalized desktop theme, populated with an eye-catching smart clock, current date and time, as well as the current status of your Linux system such as used/free HDD […]
Continue reading…

 

How to monitor Linux servers with SNMP and Cacti

SNMP (or Simple Network Management Protocol) is used to gather data on what is going on within a device, such as load, hard disk states, bandwidth. These data are used by network monitoring tools such as Cacti to generate graphs for monitoring purposes. In a typical deployment of Cacti and SNMP, there will be one […]
Continue reading…

 

How to manage Linux server with GUI

A typical Linux server runs in a command line interface (CLI) environment, preloaded with bare essential tools needed to install and configure various headless services. Compared to a full-blown GUI desktop image, such a minimal setup is advantageous in terms of security, resource consumption and speed. If you are used to GUI-based environment, however, you […]
Continue reading…