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HP LaserJet 500 colorMFP M570dn, Windows Server 2012 r2 and Offline mode

(I try hard to stay away from Windows environments, but sometimes it’s unavoidable.) Recently I ran across a strange issue with a HP LaserJet 500 colorMFP M570dn. The printer worked great for years, then all of the sudden, it started to act up. Applying the latest firmware didn’t solve the issue, so it started probing. The issue was that the printer randomly …

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Provisioner

Provisioner I’ve been working on Provisioner for a while now and it’s starting to come together. Most recently I rolled out complete API documentation as well as a brand spanking new website (powered by Jekyll and Github Pages). I’m still trying to think of more use cases, so that’s part of what I will be working on next, as well as better documentation at …

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How to migrate from qcow2/raw to iSCSI with KVM/QEMU

I recently had to migrate a number of VMs currently running on an NFS share to an iSCSI target. During my research, I was surprised how little documentation there was around this, so I decided to whip up this quick little piece about how to do it. Here are the steps: Create a new iSCSI target (one per VM/image you’re migrating). This step varies depending on …

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How to fix kernel_task CPU usage on El Capitan

Sometime ago, I wrote the blog post How to fix kernel_task CPU usage on Yosemite. This post still receives a great amount of traction, so I wanted to post an update that reflects the covers how to do this on El Capitan. The process is largely the same, but requires a bit more work due to the changes to the additional security that El Capitan introduced to …

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Using Ansible with Google Cloud Platform (the easy way)

For some time, Ansible has been my configuration management of choice and we use it for both Screenly and YippieMove. Since both of these services are running on Google Compute Engine, we’re using Ansible’s dynamic inventory for GCE. (Behind the scenes, this dynamic inventory is using Apache Libcloud, which is a great Python library for interacting with …

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