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sysadmin

2016


Fight cynicism with curiosity

·780 words·4 mins
I’m always interested to talk to college students about technology and business in general.

2015


2014


Install sysstat on Fedora 21

·366 words·2 mins
One of the first tools I learned about after working with Red Hat was sysstat.

Helpful Linux I/O stack diagram

·78 words·1 min
During one of my regular trips to reddit, I stumbled upon an amazingly helpful Linux I/O stack diagram:

Installing Xen on Fedora 20

·264 words·2 mins
I’ve written about installing Xen on Fedora 19 and earlier versions on this blog before.

MySQLTuner v1.3.0

·142 words·1 min
It’s been three long years since the last MySQLTuner release but you’ll now find version 1.

2013


Learn octal file permissions easily with stat

·106 words·1 min
My SANS classmates were learning how to set and recognize file permissions on a Linux server and we realized it would be helpful to display the octal value of the permissions next to the normal rwx display.

Moving from OS X to Linux: Day One

·1418 words·7 mins
The thought of using Linux as a manager in a highly Windows- and Mac-centric corporate environment isn’t something to be taken lightly.

Come and get your SELinux shirts!

·136 words·1 min
After my podcast interview at the 2013 Red Hat Summit, Dan Walsh posted a photo of himself in the SELinux shirt that I gave him at the Summit:

My interview on the Dave and Gunnar Show

·84 words·1 min
David Egts and Gunnar Hellekson were kind enough to invite me to participate in their Dave and Gunnar Show podcast during the 2013 Red Hat Summit.

Installing the Xen hypervisor on Fedora 19

·596 words·3 mins
It’s been a little while since I last posted about installing Xen on Fedora, so I figured that Fedora 19’s beta release was as good a time as any to write a new post.

2012


Lenovo ThinkPad T430s review

·1309 words·7 mins
This post covers the second half of my experience moving back to a Linux desktop but I figured it was a good opportunity to focus on the ThinkPad T430s itself as well as the Lenovo ordering experience.

Going back to Linux as a desktop

·1023 words·5 mins
Although I’ve been exclusively using a Mac for everything but servers since about 2008, I found myself considering a move back to Linux on the desktop after seeing how some people were using it at LinuxCon.

Automatic package updates in CentOS 6

·245 words·2 mins
Automating package updates in CentOS 6 is a quick process and it ensures that your system receives the latest available security patches, bugfixes and enhancements.

Monitoring and protecting your reputation online

·706 words·4 mins
After a recent issue I had with some users in the Puppy Linux forums, I thought it might be prudent to write a post about how to monitor and protect your reputation online.

Privacy and icanhazip.com

·507 words·3 mins
A forum thread cropped in my inbox today from the Puppy Linux forums titled “Major Hayden?

DNS Service Review: Luadns

·709 words·4 mins
Vitalie Cherpec contacted me back in May about his new hosted DNS offering, Luadns.

Off to the 2012 Red Hat Summit

·121 words·1 min
I’m on my way to my first Red Hat Summit and I’m really eager to learn some new things, meet new people, and share my experiences with others.

Preparing for Red Hat Exams

·1011 words·5 mins
I originally wrote this post for the Rackspace Blog but I’ve posted it here just in case anyone following my blog’s feed finds it useful.

Installing Fedora 16 in XenServer

·207 words·1 min
Getting Fedora 16 working in XenServer isn’t the easiest thing to do, but I’ve put together a repository on GitHub that should help.

Getting started with SELinux

·564 words·3 mins
I used to be one of those folks who would install Fedora, CentOS, Scientific Linux, or Red Hat and disable SELinux during the installation.

SELinux and .forward files

·144 words·1 min
If you want to forward e-mail from root to another user, you can usually place a .

2011


Xen Summit 2011: My Takeways

·960 words·5 mins
Quite a few people who couldn’t make it to Xen Summit 2011 this year asked me to write a post summarizing my takeaways from the event.

Success with stress

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

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.

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.

One RHCA exam down, five to go

·212 words·1 min
While I’m not the biggest proponent of certifications, I still think you can learn some valuable information while studying for some certification tests.

2010


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.

Happy Thanksgiving

·131 words·1 min
For those of us in the United States, we celebrate Thanksgiving today.

Switching from GlusterFS to DRBD and OCFS2

·174 words·1 min
As my uptime reports have shown, and as some of you have reported, my blog’s load time has increased steadily over the past few weeks.

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.

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.

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.