Leveraging Ansible's Python API to generate infrastructure reports.
An awesome feature in Chef that is not available in Ansible is immediate notification. Ansible has notification handlers but they are only triggered at the end of the current playbook unlike Chef's which can be triggered immediately! This blogpost describes an easier way of having immediate handlers in ansible.
Using nginx maps to allow IP ranges during web server maintenance.
Image compression like Compressor.io, but with open-source tools.
Patching your systems is painlessly easy if you manage your server infrastructure with something like Ansible.
Analyzing how Apache can be crippled by a DOS tool like Slowloris and a side note on Nginx...
Using swiftclient to backup data to OpenStack Swift object storage.
Using find and xargs to parallelize rsync and speed up transfers of large directory hierarchies
Learning to code the Linux way with the Eudyptula Challenge.
Experimenting with hardware-accelerated AES on Sandy Bridge+ chipsets.