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Posts

2011


Highlight IP addresses with a double click in Firefox

··145 words·1 min
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

··529 words·3 mins
This is a copy of a post I wrote for the Rackspace Talent blog.

Handy networking cheat sheets from Packet Life

··59 words·1 min
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

··934 words·5 mins
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

··979 words·5 mins
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

··197 words·1 min
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

··576 words·3 mins
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

··510 words·3 mins
Although it’s not a glamorous subject for system administrators, backups are necessary for any production environment.

2010


Tap into your Linux system with SystemTap

··641 words·4 mins
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

··535 words·3 mins
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

··250 words·2 mins
The pv command is one that I really enjoy using but it’s also one that I often forget about.

Securing your ssh server

··748 words·4 mins
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

··85 words·1 min
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

··533 words·3 mins
Let’s go ahead and get this out of the way: The following post contains only my personal opinions.

Very unscientific GlusterFS benchmarks

··375 words·2 mins
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

··1153 words·6 mins
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

··106 words·1 min
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

··193 words·1 min
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

··776 words·4 mins
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

··829 words·4 mins
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

··314 words·2 mins
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

··262 words·2 mins
When you need to measure network throughput and capacity, I haven’t found a simpler solution than iperf.

SIGTERM vs. SIGKILL

··397 words·2 mins
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

··371 words·2 mins
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.