Gluster Heal Not able to fetch volfile from glusterd

Wednesday, February 25, 2015

I recently setup a two node replica Gluster cluster on CentOS 6.6 with Gluster version 3.6.2-1. I setup a private network specifically for Gluster replication and communication and binded the Gluster daemons to this network.

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Change Gluster Volume Connection Timeout for GlusterFS Native Client

Tuesday, February 24, 2015

After setting up a two node replica Gluster cluster to use as a web content backend, I began testing what would happen when I brought down one of the Gluster nodes. The web nodes access the Gluster cluster using the GlusterFS native client and I expected them to quickly see that one of the Gluster nodes was down and begin serving content from the healthy Gluster node, but that was not happening. My test involved simply rebooting one of the Gluster nodes and that node was coming back online within about 30 seconds. However, within that 30 seconds my website was down.

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An Actual Temporary Fix for OS X Yosemite's UI Lag

Saturday, January 31, 2015

Every since I upgraded to OS X Yosemite, the experience has been lackluster. A simple Google search will reveal a host of problems Yosemite has introduced, but the absolute most annoying problem for me has been the UI lag. This UI lag mainly occurs when I have an external monitor attached.

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Inject Content into a Jekyll Post

Wednesday, January 14, 2015

There was a period where I wanted to inject an ad into a particular part of every Jekyll post. I did not want to put the actual ad markup in the middle of the Markdown text file because it was ugly and would be difficult to manage if I had to change something.

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Remove a User's Ability to Unlock File Vault 2 with their User Password

Sunday, January 11, 2015

I have used File Vault 2 since OS X Lion without issue and it has worked as expected. With File Vault 2 enabled, before I can login with my user password, I have to first unlock the hard drive using the disk encryption password I previously set.

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Problems Provisioning Ubuntu with Cobbler and Kickstart Profiles

Friday, December 19, 2014

Using cobbler to provision Ubuntu systems is no problem when using Preseed, but it is a problem when using Kickstart Profiles (Ubuntu has had Kickstart compatibility since at least 10.04).

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Making the iPhone Physically Smaller But Keeping the Same Screen Size

Wednesday, December 10, 2014

With the release of the iPhone 6 and 6 Plus, the iPhone has now joined the ranks of Android phones with large screens. Personally, I think these screen sizes are just right, but everyone always want more. In this case, more means a physically smaller phone that some how retains the 4.7” or 5.5” screen size. How could Apple conceivably do this?

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ExifTool Commands Cheat Sheet

Tuesday, December 9, 2014

ExifTool by Phil Harvey is a fantastic tool to edit the exif metadata on your pictures. It is especially useful when you have a lot of pictures to edit and have no desire to change metadata by hand.

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Understanding the OpenStack Swift Ring

Tuesday, December 9, 2014

The folks over at SwiftStack have put together a great blog post and video describing how the ring works in OpenStack Swift.

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libpng Not Symlinking When Installing ImageMagick on OS X Yosemite

Monday, December 8, 2014

After upgrading from OS X Mavericks to OS X Yosemite, I attempted to install ImageMagick via Homebrew, but encountered the following error when brew was trying to install the libpng dependency:

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