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Highlight IP addresses with a double click in Firefox

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My daily work involves working with a large number of servers and one of my frustrations with Firefox is that it’s not possible to select an entire IP address with a double click with the default settings.

Success with stress

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This is a copy of a post I wrote for the Rackspace Talent blog.

Handy networking cheat sheets from Packet Life

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If you find yourself forgetting bits and pieces about network topics, Packet Life’s cheat sheets should be a handy resource for you.

How to survive as a technical manager

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Anyone who says management is easy obviously hasn’t done it for very long or they’re not doing their job very well.

Dual-primary DRBD with OCFS2

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As promised in one of my previous posts about dual-primary DRBD and OCFS2, I’ve compiled a step-by-step guide for Fedora.

Gearing up for FUDCon 2011

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FUDCon 2011 in Tempe hasn’t even fully started yet, but it’s been well worth the trip already.

Single boot Linux on an Intel Mac Mini

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After reading the title of this post, you might wonder “Why would someone pay for a Mac Mini and then not use OS X with it?

Strategies for storing backups

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Although it’s not a glamorous subject for system administrators, backups are necessary for any production environment.


Tap into your Linux system with SystemTap

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One of the most interesting topics I’ve seen so far during my RHCA training at Rackspace this week is SystemTap.

Keep web servers in sync with DRBD and OCFS2

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The guide to redundant cloud hosting that I wrote recently will need some adjustments as I’ve fallen hard for the performance and reliability of DRBD and OCFS2.

Monitor MySQL restore progress with pv

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The pv command is one that I really enjoy using but it’s also one that I often forget about.

Securing your ssh server

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One of the most common questions that I see in my favorite IRC channel is: “How can I secure sshd on my server?

Installing Xen 4 on Fedora 13

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Installing Xen can be a bit of a challenge for a beginner and it’s made especially difficult by distribution vendors who aren’t eager to include it in their current releases.

A nerd’s perspective on cloud hosting

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Let’s go ahead and get this out of the way: The following post contains only my personal opinions.

Very unscientific GlusterFS benchmarks

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I’ve been getting requests for GlusterFS benchmarks from every direction lately and I’ve been a bit slow on getting them done.

One month with GlusterFS in production

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As many of you might have noticed from my previous GlusterFS blog post and my various tweets, I’ve been working with GlusterFS in production for my personal hosting needs for just over a month.

Adding comments to iptables rules

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After I wrote a recent post on best practices for iptables, I noticed that I forgot to mention comments for iptables rules.

Parsing mdadm output with paste

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My curiosity is always piqued when I find new ways to manipulate command line output in simple ways.

How to sell: a guide for technical people

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I’ll admit it right now: I love engaging customers and learning more about how what we do at Rackspace can help their business or ideas take flight.

Best practices: iptables

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Anyone who has used iptables before has locked themselves out of a remote server at least once.

Adjusting tty’s in Fedora 13 with upstart

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Fedora 13 has quite a few changes related to upstart, and one of the biggest ones is how terminals are configured.

Why I’m a Racker

··176 words·1 min
I normally try to keep my work-related items separate from this blog, but I felt that I needed to break tradition for a moment.

Testing network throughput with iperf

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When you need to measure network throughput and capacity, I haven’t found a simpler solution than iperf.


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Sending signals to processes using kill on a Unix system is not a new topic for most systems administrators, but I’ve been asked many times about the difference between kill and kill -9.

Crash course in dsh

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Thanks to a recommendation from [Michael][1] and [Florian][2], I’ve been using [dsh][3] with a lot of success for quite some time.