If you are doing Chef cookbook developement then you are probably using Vagrant as you local dev/test environment. And most of the time you will also use Berkshelf for cookbook dependency management.
The usual way to integrate Vagrant and Berkshelf is the vagrant-berkshelf plug-in for vagrant. Basically, this is the Berkshelf functionality bundled in the form of an vagrant plug-in. If you have any experience with plugin development for vagrant you'll probably know, that development of more complex Vagrant plug-ins sucks big time: Major changes on the plugin API with every release or Vagrant not being distributed as Ruby gem anymore, making testing with multiple Vagrant versions a real pain. I really like Vagrant for local testing setups and development - it is a great tool. But to be honest, its plug-in concept has major flaws, if you plan to write complex plug-ins, which bring a few Ruby dependencies along themselves.
Basically the root of the problem: Vagrant brings its own Ruby gem dependencies. All plug-ins run in the same Ruby process - the Vagrant Ruby process. So in case your plug-in needs one Ruby gem in another version than Vagrant, stuff starts to break. Just have a look at the vagrant-berkshelf issue tracker. The developers of Berkshelf finally got tired of maintaining vagrant-berkshelf and will retire it in the future.
Since I rely heavily on Vagrant / Berkshelf integration for a customers Chef cookbook development life cycle, used an alternative approach to integrate Berkshelf into Vagrant.
Continue reading "Replace vagrant-berkshelf with berkshelf and vagrant-triggers"
While debugging network related stuff on my router, I noticed that something in my network was using all the available DSL upstream bandwidth. The only active application at that time was Spotify and it wasn't even playing a song. After digging around in the interwebz for a time, I found quite a few reports about this behaviour. Spotify is using p2p techniques to distribute content. So, if somebody plays a song, Spotify tries to download it from another user (maybe you!) who has the song already sitting in his computers disk cache. While Spotify is saving money by using p2p, because it decreases bandwidth usage on their servers, it can lead to problems on your side. Spotify sometimes decides to use ALL of the available upstream, causing short lag spikes in games or SSH sessions. Or maybe your ISP limits traffic to a certain amount of data per month.
Since Spotify does not include an option to limit p2p upstream (Hey Spotify, I am a paying customer and I am pissed!) you have to help yourself and use the neat Linux tool "trickle" to limit the Spotify upstream maximum.
Continue reading "Limit Spotify upstream bandwidth with trickle"
I have been trying out Barracuda Networks cloud file storage "Copy" for the last few day. The Linux client seems stable and syncing has been reliable up to now. Although there are claims that Copy stores files encrypted, it is also an architectural fact that Copy needs to store your encryption keys on the server side.
So, if you want to store private Data, then you'll have to setup encryption yourself - Enter EncFS.
Continue reading "Using EncFS with Copy Cloud File Storage"
Copy is a new cloud storage solution similar to Dropbox. They have a better price model, allowing you to use 250GB of storage for 99$ per year. The free account starts with 5GB and you can get a few extra GB by promoting the service. You get client agents for most operating systems, including Linux.
Barracuda only supplies Linux users with a simple tgz installer. This installer is perfectly working, but I wanted to install and update software with dpkg. So I hacked a little script to download the current version of the client agent and build a Debian package from the tgz.
You can find the script on GitHub: https://github.com/neovatar/copycom2deb
Spotify is great and it is nearly the only choice if you want a music streaming service with a native Linux client. But the client is still in a "preview" stage. So if Spotify releases a new version of the Linux client, it sometimes botches your spotify installation. So if you do your "apt-get update && apt-get upgrade" dance, it might leave you without music (eeeeeeek!). But fear not! There is an easy way to backup your working Spotify installation on an Ubuntu/Debian system.
Continue reading "Spotify and Linux: Backing it up with dpkg-repack"