Category Archives: Technical

Writings, research, and software code. Everything from my technical sphere of life.

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Setting up a Hosting Environment, Part 5: Apache and PHP

Figuring out the possibilities for Apache and PHP reminds me of a Dr. Seuss book, “Fox in Sox”. It’s a favorite of mine. I love reading it to the kids. In it, Mr. Fox tries to get Mr. Knox to say all kinds of ridiculous (in meaning and hard to say) tongue twisters. At one […]

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Atop – Apache Top, for keeping tabs on the web servers

When I first became a systems administrator of a large web server, I wanted to know what the current traffic to all of the virtual hosts (vhosts) looked like. I wanted to see which domains were getting the most traffic and where that traffic was coming from. So began my long search for a sufficient […]

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3D printing in the field of history

I was asked to lead a discussion on the current status of 3D printing in the humanities, particularly the field of history with a great group of fellow PhD students here at GMU during one of their classes. Here is what we came up with. First of all, 3D printing (in general, but specifically for […]

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OSSEC, Suhosin, and WordPress

I had a problem show up on some of our servers. Visiting sites would work fine, but as soon as you log in to a WordPress site, then your IP was blocked at the firewall level. It took a bit of hunting around the OSSEC logs to figure out the cause, and then finally tipped […]

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Four Steps to a Personal Website

There are four basic steps to creating a personal website. 1. Content You may want to start out with a cool design, or fun idea on how to interact with visitors, or what have you. But really, the most important thing a website has going for it is the content. Design is a close second […]

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Setting up a Hosting Environment, Part 3: RedHat Cluster and GFS2

Previous posts in this series: Part 1: Setting up the servers Part 2: Connecting the Array RedHat Cluster and GFS2 Setup Required reading: https://alteeve.com/w/2-Node_Red_Hat_KVM_Cluster_Tutorial Seriously. Don’t do anything until you read his tutorial a couple of times. Might as well read a bunch of his other tutorials, too. Unless mentioned, the following commands should be […]

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If at first you don’t succeed

…copy somebody’s code. Or at least your own from the past that works. I finally got the map to work for my Exhibit exhibit. See.   First I copied the tutorial here. When that was working, I carefully copied it to the file I wanted it to be in and… nothing. Still broken. So next […]

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When your OS updates break your CAM

As I’m sure many people have run into this before, and from personal experience, found nothing roaming the Interwebs on how to fix it, and seeings how I just fixed it, I’ll write up a little how to fix it post.   The set up: Two SunFire X2100 M2 servers connected to a StorageTek 2530 […]

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Making Multiple MySQL Instances on One Server

I’m trying this new idea for backing up our production MySQL servers. I have a backup server that basically runs rdiff-backup in the morning across several servers, but then does nothing for the rest of the day. It’s a pretty decent machine, so I’d like to utilize some resources. Replicating a MySQL server is a […]