Soloist: Making chef-solo easier
You just want to use chef solo, not worry about where your config files are, or what they should look like (too much). You might think that json is a data serialization format and not a config file format. You might think that having two config files that you have to pass to an executable every time you run it is two too many.
Soloist is a script packaged as a gem which when run recurses up the file tree looking for a soloistrc file. When it finds it, it uses it to determine 1) Where its cookbooks are and 2) What recipes to run. It generates the necessary config files for chef solo, and kicks it off.
That's exactly what I've always wanted! How do I use it?
- (sudo) gem install soloist
- create a directory to store your cookbooks in, and get a cookbook: sh -c 'mkdir -p chef/cookbooks/pivotal_workstation && cd chef/cookbooks/pivotal_workstation && curl -L http://github.com/pivotal/pivotal_workstation/tarball/master | gunzip | tar xvf - --strip=1'
- create your soloistrc file in the root of your project.
What if I'm just setting up my own machine, and have many projects?
Just put your soloistrc file in your home directory, and point it to wherever you want to keep your cookbooks. Or just dedicate a git repo to it, and go into that directory before running soloist.
How do I write a soloistrc file?
It's a yaml file, currently with two lists to maintain:
The first, cookbook_paths, should point (using an absolute or path relative to your soloistrc file) to the directory containing your cookbooks, such was pivotal_workstation.
The second, recipes should be a list of recipes you wish to run.
Example soloistrc Files
/Users/mkocher/workspace/project/soloistrc <-Config File /Users/mkocher/workspace/project/chef/ /Users/mkocher/workspace/project/chef/cookbooks/pivotal_workstation/
cookbook_paths: - ./chef/cookbooks/ recipes: - pivotal_workstation::ack - pivotal_workstation::bash_path_order - pivotal_workstation::bash_profile - pivotal_workstation::bash_profile-better_history - pivotal_workstation::defaults_fast_key_repeat_rate - pivotal_workstation::dock_preferences - pivotal_workstation::ec2_api_tools - pivotal_workstation::finder_display_full_path - pivotal_workstation::git - pivotal_workstation::git_config_global_defaults - pivotal_workstation::git_scripts - pivotal_workstation::google_chrome - pivotal_workstation::inputrc - pivotal_workstation::mysql - pivotal_workstation::osx_turn_on_locate - pivotal_workstation::rvm - pivotal_workstation::safari_preferences - pivotal_workstation::set_multitouch_preferences - pivotal_workstation::text_mate - pivotal_workstation::textmate_set_defaults - pivotal_workstation::turn_on_ssh - pivotal_workstation::user_owns_usr_local - pivotal_workstation::workspace_directory
Environment Variable Switching
I'm trying out adding support in the soloistrc file for selecting recipes based on environment variables. Cap should allow setting environment variables fairly easily on deploy, and they can be set permanently on the machine if desired. To use these, add a env_variable_switches key to your soloistrc. They keys of the hash should be the environment variable you wish to change the configuration based on, and the value should be a hash keyed by the value of the variable. It's easier than it sounds - see the example below. (NB: Note that the CamelSnake is gone in the soloistrc, and while the basic config accepts the old keys, environment variable switching requires snake case keys)
cookbook_paths: - ./chef/cookbooks/ recipes: - pivotal_workstation::ack env_variable_switches: RACK_ENV: production: cookbook_paths: - ./chef/production_cookbooks/ recipes: - production::foo
The values are merged in, so this results in a cookbook path of [ "./chef/cookbooks/", "./chef/production_cookbooks/" ] and a recipe list of [ "pivotal_workstation::ack", "production::foo" ]
Soloist runs chef at log level info by default. Debug is very verbose, but makes debugging chef recipes much easier. Just set the LOG_LEVEL environment variable to 'debug' (or other valid chef log level) and it will be passed through.
Local Overrides (experimental)
Soloist is an easy way to share configuration across workstations. If you want to have configuration in chef that you don't want to share with the rest of the project, you can create a soloistrc_local file in addition to the soloistrc file. This file will be processed after the soloistrc, and everything in it will be added to the run list. Be careful that you are clear what goes where - if it's a dependency of the project, it should be checked into the soloistrc file in the project.
Soloist is MIT Licensed. See MIT-LICENSE for details.