Monitoring

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Monitoring Linux And Unix Server Temperatures With Opsview

Monitoring Linux And Unix Server Temperatures With Opsview

Managing power consumption in a Datacenter is a key factor in helping keep overall business energy costs down and ensuring servers are running at optimum performance. Overheating can lead to increased costs for cooling and also runs the risk of servers crashing.  Opsview server monitoring software can be used to check and alert on server temperature and also the temperature of individual components within a server (Memory, CPU and Hard drives). Thresholds and alerts can be set for when critical temperatures are exceeded, helping to keep hot-running servers in check. This blog post details how to configure Opsview to monitor the temperature of Linux and Unix servers.

Installing Nagios 3.4.4 On CentOS 6.3

Installing Nagios 3.4.4 On CentOS 6.3

Nagios is a monitoring tool under GPL licence. This tool lets you monitor servers, network hardware (switches, routers, ...) and applications. A lot of plugins are available and its big community makes Nagios the biggest open source monitoring tool. This tutorial shows how to install Nagios 3.4.4 on CentOS 6.3.

Configure Monit To Send SMS Instead Of Email

Configure Monit To Send SMS Instead Of Email

This tutorial helps you configure monit  to send alert messages using SMS to your mobile phone when a service fails instead of traditional email notification. Because monit can send only emails but not SMS, we will use an email-to-sms gateway where monit will send its emails to, and the email-to-sms gateway will convert the emails to SMS messages.

How To Set Up Multi-Level/Master-Slave Umbrella Network Monitoring

How To Set Up Multi-Level/Master-Slave Umbrella Network Monitoring

This guide provides an overview on how to set up umbrella monitoring to monitor applications and devices in distributed networks. Multiple instances of monitoring systems (in this example Verax NMS express) can be configured in a tree-like, master-slave, federated umbrella monitoring structure. This umbrella-like monitoring can be used to monitor geographically distributed networks e.g. by telecommunications operators to manage regional, state and national networks or managed service providers for managing their clients' infrastructure.

How To Use Nagios Plugins In Verax NMS

How To Use Nagios Plugins In Verax NMS

This guide shows how to use Nagios plugins to monitor devices in Verax NMS Express. Verax NMS is a cross-platform network and application monitoring software.

How To Simulate Network Devices Using SNMP Simulator

How To Simulate Network Devices Using SNMP Simulator

This tutorial explains how you can simulate network devices for testing purposes with the free Verax SNMP Simulator. Verax SNMP agent simulator is a tool that can simulate multiple SNMPv1/v2c agents on a single host on standard 161 port through multi-netting. It allows IT personnel to build virtual, simulated networks of devices without purchasing any additional hardware, for instance for testing purposes. Individual simulated agent responses can be initially retrieved from existing devices and modified at runtime by user defined rules.

Server Monitoring With Icinga On Ubuntu 11.10

Server Monitoring With Icinga On Ubuntu 11.10

Icinga is an enterprise grade open source monitoring system which keeps watch over networks and any conceivable network resource, notifies the user of errors and recoveries and generates performance data for reporting. It is a fork of Nagios. This tutorial explains how to install Icinga on an Ubuntu 11.10 server to monitor this server and another Ubuntu 11.10 server.

Server Monitoring With munin And monit On Debian Squeeze

Server Monitoring With munin And monit On Debian Squeeze

In this article I will describe how you can monitor your Debian Squeeze server with munin and monit. munin produces nifty little graphics about nearly every aspect of your server (load average, memory usage, CPU usage, MySQL throughput, eth0 traffic, etc.) without much configuration, whereas monit checks the availability of services like Apache, MySQL, Postfix and takes the appropriate action such as a restart if it finds a service is not behaving as expected. The combination of the two gives you full monitoring: graphics that lets you recognize current or upcoming problems, and a watchdog that ensures the availability of the monitored services.

Centralized RSYSLOG Server Monitoring

Centralized RSYSLOG Server Monitoring

This tutorial provides step-by-step instructions on how to install RSYSLOG server on Debian 6 (Squeeze) and how to send syslog data to it from multiple client servers. We will also show how to install an Apache webserver and a MySQL database server to gather the syslog data and how to install LogAnalyzer to easily browse the collected data with a web-browser.

Icinga Configuration For Nginx On Debian Wheezy/Ubuntu 11.10

Icinga Configuration For Nginx On Debian Wheezy/Ubuntu 11.10

Icinga is an enterprise grade open source monitoring system which keeps watch over networks and any conceivable network resource, notifies the user of errors and recoveries and generates performance data for reporting. It is a fork of Nagios. This tutorial explains how to serve the Icinga Web interface from an nginx server on Debian Wheezy/Ubuntu 11.10 (the tutorial might work for Debian Squeeze as well but I didn't test; Squeeze's Icinga version is a lot older than the versions for Wheezy and Ubuntu 11.10, so there might be small differences).

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