Howtos / Articles

Load Balancing With HAProxy

HAProxy is a free, reliable, high performance load balancing solution capable of proxying TCP and HTTP applications. This article will outline how to set up a simple HAProxy server to allow you to load balance web site requests to one or more back-end web servers. While this example may not be suitable for a production set up on the internet, its a good start if you just want to set up a simple load balanced web site. The following example…

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Top 5 Network Monitoring Tools for Linux

Below is a list of my top 5 network monitoring tools for Linux, in no particular order. Nagios Nagios is a network monitoring application that is capable of alerting a system administrator in the event that something goes wrong on a network, and even when it comes good again. Nagios lets you monitor network services (such as FTP, HTTP, SMTP, POP3, etc), host availability, host resources (CPU load, memory usage, etc), bandwidth utilization, and via the customizable nature of Nagios,…

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Live monitoring of Apache log files

The “ApacheTop” package has been written to allow users to monitor real time statistics based on the Apache log files. ApacheTop is a great way to keep an eye on your Apache web server statistics. It allows you to monitor how many requests you get (total and per second), bandwidth usage (total and per second), the number of 2xx, 3xx, 4xx, and 5xx HTTP return code responses, individual page/url requests, and more. ApacheTop is similar in style to the ‘top’…

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Updating CentOS with the YUM package manager

Updating the software running on a operating system is an important part of maintaining a computer. Not only does it allow you to keep up to date with the latest features in the applications you use, it is also crucial to keep your system as secure as possible. The YUM (Yellowdog Updater Modified) package management tools makes installing/updating/removing packages extremely simple. Run the one of the following command to update all packages: If logged in as root: # yum update…

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Updating Ubuntu with the APT package manager

Updating the software running on a operating system is an important part of maintaining a computer. Not only does it allow you to keep up to date with the latest features in the applications you use, it is also crucial to keep your system as secure as possible. The APT (Advanced Package Tool) package management system makes installing/updating/removing packages extremely simple. The first step in the process is to update the APT sources. This downloads the latest package lists, so…

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