Archive for the Linux Category

3ware RAID status script

August 24, 2013 by  |  No Comments

Recently I have had a streak of bad luck with hard drives behind 3ware RAID controllers dying. The 3ware CLI is a great tool, but it doesn’t have a simple way of setting up recurring health checks of the RAID array and to send alerts if an array becomes degraded. Therefore, I set out to […]

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How to measure bandwidth between computers with iperf

August 5, 2012 by  |  No Comments

To test bandwidth between computers, iperf is a great CLI tool to use. There’s also a graphical front-end to iperf, written in Java, called jperf, which works on Linux, Mac OS and Windows. On most Linux distributions, iperf can easily be installed from CLI using the distribution’s package manager. In Debian/Ubuntu you would install it […]

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GlusterFS: Build a three-node storage cluster

July 26, 2012 by  |  No Comments

This article will guide you step by step through a three-node GlusterFS cluster. For this setup I’m using three Ubuntu 12.04 servers with a second hard drive attached to hold all the data.

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How to Install OpenVPN Access Server on Proxmox VE

June 10, 2009 by  |  9 Comments

How to Install OpenVPN Access Server on Proxmox VE

I thought OpenVPN Access Server, or OpenVPN AS, was going to be easy to install on Proxmox VE using an OpenVZ container, but it turned out to be a bit more complicated than I had anticipated. So, I decided to write it all up here for others to benefit from.

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T-Mobile webConnect on Ubuntu 9.04

June 2, 2009 by  |  5 Comments

T-Mobile webConnect on Ubuntu 9.04

I couldn’t resist trying the T-Mobile (Huawei E181) HSDPA modem on my netbook running Ubuntu 9.04 Desktop. This is all I had to do to get it working …

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OpenVPN Access Server

May 29, 2009 by  |  No Comments

OpenVPN Access Server

Yesterday OpenVPN Technologies, the company behind the OpenVPN open source project, announced the immediate availability of their new OpenVPN Access Server. OpenVPN Access Server, or OpenVPN AS, is a commercial product based on the open source version originally developed by James Yonan. OpenVPN AS lends itself perfectly to use either on an appliance-style server or […]

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Proxmox Virtual Environment – Part 1

May 12, 2009 by  |  3 Comments

Proxmox Virtual Environment - Part 1

For a few years now I’ve been using a bunch of different virtualization products. I’ve mainly used VMware, although I’ve tested a bunch of other alternatives. I’ve used Fusion on Macs, Player and Server on Windows, and Server on headless Linux machines. When it comes to data center equipment I’ve been working with VMware ESX. Then, not too long ago, about half a year ago or so, as I was researching Qumranet and KVM, I stumbled across a little known open source product from an Austrian company called Proxmox Virtual Environment (Proxmox VE).

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How-to Install Redmine on Ubuntu 8.04

July 4, 2008 by  |  17 Comments

This tutorial assumes that you have some knowledge of Linux and know how to install Ubuntu. It further assumes you have root access and are logged in as root on the server on which you will install Redmine. If you’re not logged in as root, all command below needs to be prepended with sudo, like: […]

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The small firm’s and road warrior’s dilemma. Solution: Step 1 – a VPN.

September 15, 2007 by  |  No Comments

I work with a lot of individuals and small companies, companies ranging in size from 1-20 people. Many of the companies are consulting companies in various industries. Oftentimes the companies do not have much in common except that they are relatively small. What they do have in common, however, is their need for computer and […]

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