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Linux Cloud Technologies 2013

  Build the cloud on Linux!  This year looks very promising for Linux when it comes to building your private cloud using open source technologies.  Finally, Linux-based software and application

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Linux Cloud Technologies 2013

Install vSphere CLI in CentOS 6

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by on May 7, 2013 at 4:04 pm

I recently installed VMware’s vSphere CLI 5.1 tools on a CentOS 6 x86_64 VM.  Despite the rather reassuring documentation released by VMware, installing these tools was no simple task.  I will outline the steps that I took for a successful installation of the vSphere CLI software, as some of it is not very obvious, especially for beginners.

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Ubuntu: install packages from CD

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by on January 12, 2013 at 10:18 pm

Recently I installed a system with Ubuntu Server, and neglected to install openssh-server.  While I had terminal access, I didn’t have internet access, so I simply couldn’t run apt-get to install the missing packages.  I was stuck in the data center (virtually stuck, anyway) with a decision:  Spending another 40 minutes re-installing the operating system, or somehow install the packages from the installation disk.  I chose the latter, and while it took more time than just re-installing the system to figure it out, it will surely save me time in the long run as this is most likely not the last time I will encounter this missing package problem.

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in Distros, How-To, Ubuntu

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Ubuntu 10.04 rescue information

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by on January 12, 2013 at 9:35 pm

I recently encountered a problematic server running Ubuntu 10.04 server.  The problem was simple, and so was the solution, but there were many hurdles in the way that, if you’re not familiar with them, will prevent you from accomplishing the task.  This should apply to later Ubuntu distros as well.

Scenario:  The server is a Dell, on the other side of the country.  You have only DRAC access, no ability to manipulate anything physically.  Somehow, the root password was changed, and now no one can log into the server remotely. (more…)

in Distros, How-To, Ubuntu

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Top 5 Reasons to use the vi/vim editor

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by on July 12, 2012 at 4:24 pm

It is debatable as to what the ‘best’ editor is in Unix/Linux world.  I’m not going to attempt to answer that here, as it’s very subjective and besides the point.  What I will do is outline the top 5 reasons that you should use vi, or at least familiarize yourself with it’s commands and basic usage.

1:

It’s free!

2:

Commands are quick and intuitive.  After you’ve acquainted yourself with the commands, the built in functionality covers just about any task you can complete with a mouse.

3:

Color syntax highlighting.  If your terminal supports color, integrated syntax highlighting makes reading and editing scripts a much easier proposition.

4:

You never have to leave your terminal.  Most servers and production systems are located in a cold room with funny lighting, somewhere far away.  If you’re working from a non-free operating system (GASP!), there’s nothing more annoying than having to upload the same file several times while you’re trying to tweak a setting.  If you posses vi skills, you’ve already made your changes, saved the new file, and restarted your application, all before your mouse can even find the locally saved file!

5:

It’s a ubiquitous application.  It’s available on just about any *nix machine you’re likely to find in production today.  If you work on or in a mixed OS environment, then you know it’s not very often your tools are so portable.  Learn vi, and you’re covered for just about any appliance you can ssh into!

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