MySQLTuner

XenServer 6 is a solid virtualization platform, but the installer doesn't give you many options for customized configurations. By default, it installs with a 4GB root partition and uses GUID Partition Tables (GPT). GPT is new in XenServer 6. I'd ... [More] rather use MBR partition tables and get a larger root partition. If you want to [...]XenServer 6: Disable GPT and get a larger root partition is a post from: Major Hayden's Racker Hacker blog. Thanks for following the blog via the RSS feed. Please don't copy my posts or quote portions of them without attribution. [Less]

Get informed about what the US government is trying to accomplish with SOPA and PIPA. Get involved and do what you can to prevent it from moving any further. WordPress > Help Stop SOPA/PIPA Reddit - SOPA Stop American Censorship Wikipedia - Stop ... [More] Online Piracy Act EFF - Take Action Why Rackspace opposes the Stop [...]Fight SOPA & PIPA is a post from: Major Hayden's Racker Hacker blog. Thanks for following the blog via the RSS feed. Please don't copy my posts or quote portions of them without attribution. [Less]

It's no secret that I'm a big fan of the Routerboard devices and the RouterOS software from Mikrotik that runs on them. The hardware is solid, the software is stable and feature-rich, and I found a great vendor that ships quickly. I recently added a ... [More] RB493G (~ $230 USD) to sit in front of a [...]Native IPv6 connectivity in Mikrotik's RouterOS is a post from: Major Hayden's Racker Hacker blog. Thanks for following the blog via the RSS feed. Please don't copy my posts or quote portions of them without attribution. [Less]

If you want to forward e-mail from root to another user, you can usually place a .forward file in root's home directory and your mail server will take care of the rest: echo "[email protected]" > /root/.forward With SELinux, you'll end up getting ... [More] an AVC denial each time your mail server tries to read the contents [...]SELinux and .forward files is a post from: Major Hayden's Racker Hacker blog. Thanks for following the blog via the RSS feed. Please don't copy my posts or quote portions of them without attribution. [Less]

Anyone who has used a 3G ExpressCard or USB stick knows how handy they can be when you need internet access away from home (and away from Wi-Fi). I've run into some situations recently where I needed to share my 3G connection with more than one ... [More] device without using internet sharing on my MacBook Pro. [...]Getting online with a CradlePoint PHS-300 and an AT&T USBConnect Mercury is a post from: Major Hayden's Racker Hacker blog. Thanks for following the blog via the RSS feed. Please don't copy my posts or quote portions of them without attribution. [Less]

When you install Scientific Linux, it will keep you on the same point release that you installed. For example, if you install it from a 6.0 DVD, you'll stay on 6.0 and get security releases for that point release only. Getting it to behave like Red ... [More] Hat Enterprise Linux and CentOS is a painless process. [...]Automatically upgrading to new point releases of Scientific Linux is a post from: Major Hayden's Racker Hacker blog. Thanks for following the blog via the RSS feed. Please don't copy my posts or quote portions of them without attribution. [Less]

I added a DisplayLink USB to DVI adapter to my MacBook Pro a while back and it occasionally has some issues where it won't start the display after connecting the USB cable. My logs in Console.app usually contain something like this: The IOUSBFamily ... [More] is having trouble enumerating a USB device that has been plugged in. [...]DisplayLink USB to DVI issues in OS X Lion is a post from: Major Hayden's Racker Hacker blog. Thanks for following the blog via the RSS feed. Please don't copy my posts or quote portions of them without attribution. [Less]

Before we get started, I really ought to drop this here: Upgrading Fedora via yum is not the recommended method. Your first choice for upgrading Fedora should be to use preupgrade. Seriously. This begs the question: When should you use another method ... [More] to upgrade Fedora? What other methods are there? You have a few other [...]Live upgrade Fedora 15 to Fedora 16 using yum is a post from: Major Hayden's Racker Hacker blog. Thanks for following the blog via the RSS feed. Please don't copy my posts or quote portions of them without attribution. [Less]

My work at Rackspace has changed a bit in the last few weeks and I've shifted from managing a team of engineers to a full technical focus on OpenStack Nova. Although it was difficult to leave my management position, I'm happy to get back to my roots ... [More] and dig into the technical stuff again. One [...]Tracing a build through OpenStack Compute (Nova) is a post from: Major Hayden's Racker Hacker blog. Thanks for following the blog via the RSS feed. Please don't copy my posts or quote portions of them without attribution. [Less]

I've floated back and forth between graphical IRC clients and terminal-based clients for a long time. However, I was sad to see that irssi wouldn't build via MacPorts on OS X Lion. During the build, I saw quite a few errors from the compiler: -E, -S ... [More] , -save-temps and -M options are not allowed with multiple [...]Installing irssi via MacPorts on OS X Lion 10.7.1 is a post from: Major Hayden's Racker Hacker blog. Thanks for following the blog via the RSS feed. Please don't copy my posts or quote portions of them without attribution. [Less]