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README.md

Description

To date, this cookbook has only been designed and tested on the Ubuntu and Debian platforms.

Requirements

The carton cookbook depends on 'perlbrew' and on a development version of the 'runit' cookbook.

The 'perlbrew' cookbook is available from the Opscode Community site or from the perl-chef git repository.

The required development version of 'runit' uses a LWRP instead of a definition file. See CHEF-154. This cookbook requires the CHEF-154 branch of my clone of the Opscode runit repository, available here: https://github.com/dagolden/runit/tree/CHEF-154. Hopefully, these changes will be merged upstream soon.

Attributes

  • node['carton']['perlbrew'] = 'perl-5.14.2' - Sets default perl for carton apps if not specified by user

Recipes

carton

Loads the 'perlbrew' and 'runit' recipes to ensure those LWRPs are ready for use. This must be loaded before using the 'carton_app' LWRP.

Resources/Providers

carton_app

This LWRP sets up a carton application as a runit service and passes through runit commands to start/stop or otherwise control the service.

Example:

carton_app "hello-world" do
  perlbrew node['hello-world']['perl_version']
  command "starman -p #{node['hello-world']['port']} app.psgi"
  cwd node['hello-world']['deploy_dir']
  user node['hello-world']['user']
  group node['hello-world']['group']
end

carton_app "hello-world" do
  action :start
end

This installs all dependencies of a carton app in a deployment directory using a particular perl, sets up a runit service using the given command, and starts the service.

Actions:

  • :enable - ensure carton dependencies are installed and set up the runit service (default action)
  • :disable - disables the runit service
  • :start - start the service
  • :stop - stop the service
  • :restart - restart the service

Attributes:

  • :perlbrew - name of a perlbrew perl to use to run the application. This will be installed using the perlbrew LWRP if not already availble
  • :command - shell command to launch the application. This must launch the application in the foreground; runit will ensure it is properly daemonized
  • :cwd - directory containing the application. The service will also be launched in this directory (via "carton exec -I lib -- $command").
  • :user - user under which the service will run
  • :group - group under which the service will run
  • :environment - a hash of environment variables that will be set prior to running the service

Usage

If you wish to use the LWRP, be sure to include the carton recipe, which ensures that carton is ready for use.

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