Mitchel Humpherys

It's the end of an era (blog redesign!)

2022-03-22T00:00:00+00:00

Well, after more than a decade running Bootstrap v1.2.0 🤯 I decided to finally bite the bullet and update the blog design. The old design was fun but it wasn’t responsive at all, which has become increasingly problematic.

How To Build A Custom Linux Kernel For Qemu Using Docker

2021-03-23T00:00:00+00:00

This is an updated version of my Linux Kernel/Qemu tutorial from 2015.

OpenVPN On CoreOS Container Linux On DigitalOcean

2019-11-11T00:00:00+00:00

Using a VPN is useful for a whole host of reasons. Unfortunately, you either have to pay for a hosted service (which means trusting the service provider) or you have to host it yourself (and VPNs are famously difficult to configure and maintain).

Block Invalid Http Hosts With Haproxy And Django

2016-07-06T00:00:00+00:00

In Django >= 1.5, an error is logged every time a request comes in where the HTTP host header isn’t present in your ALLOWED_HOSTS setting. You’ll see error messages (and probably emails) with stuff like:

Evil Bouncie Ball Shooter (Halloween Pi)

2015-10-30T00:00:00+00:00

I had so much fun shooting trick-or-treaters with silly string last year that I decided to up the ante this year with an “Evil Bouncey Ball Shooter”. Before diving into the details, here’s the final product in action at our local “Trunk or Treat”:

Atmega8 Bare Bones Dev Board

2015-10-30T00:00:00+00:00

Several years ago I decided it would be nice to have a simple dev board for the Atmega8’s I had laying around. So I spun up this little guy:

Installing A Custom Openwrt Build On An ASUS RT-N16

2015-07-13T00:00:00+00:00

My home router has been acting up recently so I decided to take control of it by installing OpenWRT. I’ve used DD-WRT and tomato in the past, but wanted something a little more hackable and less shiny. OpenWRT seems like a perfect fit!

How to Build A Custom Linux Kernel For Qemu (2015 Edition)

2015-05-16T00:00:00+00:00

Rafty -- Ripper and Friggin Transcoder, Y'all

2015-04-02T00:00:00+00:00

See the main blog post.

Rafty -- DVD Backups using Systemd, Docker, Rabbitmq, and go

2015-04-02T00:00:00+00:00

Rafty is a scalable, fully-automated system for backing up DVD collections.

Enable arcfour and Other Fast Ciphers on Recent Versions of OpenSSH

2014-10-22T00:00:00+00:00

After a recent update to my Arch Linux box I noticed that some of my backup scripts started complaining about not being able to connect to my machine. The error message I was seeing was:

git submodule update --init --remote --recursive Considered Harmful

2014-07-03T00:00:00+00:00

I use a repository (gh.el) that has a submodule to itself. The .gitmodules looks like:

Hacking Your ELF For Fun And Profit

2013-05-10T00:00:00+00:00

Have you ever wondered how the Linux kernel module_init and *_initcall(e.g. subsys_initcall) macros work? Even after a quick glance at their definition things might not be exactly clear:

localhost considered harmful (nginx ipv6 fun)

2013-05-04T00:00:00+00:00

After a recent update to one of my CentOS servers that hosts some django applications, I started getting 502’s with the following error message:

Make Readme Markdown

2013-02-16T00:00:00+00:00

make-readme-markdown.el is an Emacs script (i.e. invoked with --script) that can be used to convert typical Elisp file comment headers into README.md files, suitable for usage on GitHub, etc.