Getting started with Chef
Before installing chef, make sure curl is installed and sudo finds your gems
- setup
chef-client: follow this guide Show archive.org snapshot - setup
chef-server: follow this guide Show archive.org snapshot
#Important
- execute all commands from within your
chef-repodirectory, else you'll be missing out on configuration files
Related cards:
Getting started with Puppet
When you simply want to get to know Puppet, follow puppetlabs’ Learning Puppet Docs. They give you a handy introduction inside a virtual machine they provide. You can watch the [talk by Garrett Honeycutt '...
Getting Started with Webrat, Selenium, Rails and Firefox 3 | Viget Extend
Info on install database_cleaner.
Freeze (vendor, unpack) a single Ruby gem with and without Bundler
When you need to patch an existing gem, one way is to "vendor" the gem by copying it into the vendor/gems directory of your Rails project. You can then make any changes you require and Rails will use the vendored version of the gem after a serve...
Working with or without time zones in Rails applications
Rails supports time zones, but there are several pitfalls. Most importantly because Time.now and Time.current are completely different things and code from gems might use one or the other.
Especially configuring an application that cares only...
PSA: When Redis (on LRU noeviction) reaches memory limits, keys with (any) expiry are removed, and keys without are not
In production, you (or your ops team) should configure a maximum number of bytes that Redis can use to store data (maxmemory setting).
They may even want to set maxmemory-policy to noeviction to avoid keys being removed that you want to keep...
Perform HTTP basic authentication in Cucumber (with or without Selenium)
This card describes a Cucumber step that lets you say:
When I perform basic authentication as "username/password" and I visit the admin area
The path component ("... the admin area") is parsed through your path_to helper in `features/s...
Images darken when getting converted with ImageMagick
When using ImageMagick to manipulate images, you might see that images get darker when beeing modified by newer versions of ImageMagick.
This usually happens with CMYK images beeing converted to RGB by IM.
Solution
At least in our version of ...
Getting different results working with SVG files and ImageMagick
When you are working with SVG files and ImageMagick you can get different results on different machines depending on which additional packages you have installed.
From: [http://www.imagemagick.org/script/formats.php](http://www.imagemagick.org/sc...
What's wrong with defining JavaScript variables within if blocks? - Stack Overflow
Because javascript has something called "Hoisting" which makes your code do things it doesn't look like it should be doing. Basically, that means a javascript interpreter will move all var declarations, regardless of where they are in the body of ...
RSpec is getting too intimate with my code | opensoul.org
What if my controller decides to take the Thing.create! and rescue route? What if my model has a special initializer method, like Thing.build_with_foo? My spec for behavior should not fail if I change the implementation.