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This was written by Patrick Debois (www.jedi.be) What's the next step once you implement some config management tools? Testing, right? Wouldn't you like to automate that with some nice clean and sandboxed environment for testing your config management changes? You can use Vagrant to help ease the VM management. It is a great tool often used as a sandbox environment to develop Chef recipes or Puppe

By: Ania Kapuścińska (@lambdanis) Edited by: Shaun Mouton (@sdmouton ) Like many engineers, for a long time I’ve thought of the Linux kernel as a black box. I've been using Linux daily for many years - but my usage was mostly limited to following the installation guide, interacting with the command line interface and writing bash scripts. Some time ago I heard about eBPF (extended BPF). The first

I'm compelled to write about this subject today because of having received this question multiple times since sysadvent began. Capistrano or Puppet? Both. Puppet provides you with a way to specify a state your system should be in. Puppet's features will help you keep a machine in the same state. If someone hand-edits an apache config, you can have puppet automatically replace it with the correct o