cookbook 'application_ruby', '= 1.1.0'
application_ruby
(18) Versions
1.1.0
-
Follow70
A Chef cookbook for deploying application code.
cookbook 'application_ruby', '= 1.1.0', :supermarket
knife supermarket install application_ruby
knife supermarket download application_ruby
Description
This cookbook is designed to be able to describe and deploy Ruby web applications. Currently supported:
- Ruby on Rails
- Apache 2 with Passenger
- Unicorn
- Memcached client
Note that this cookbook provides the Ruby-specific bindings for the application
cookbook; you will find general documentation in that cookbook.
Other application stacks may be supported at a later date.
Requirements
Chef 0.10.0 or higher required (for Chef environment use).
The following Opscode cookbooks are dependencies:
- application
- apache2
- passenger_apache2
- runit
- unicorn
Resources/Providers
The LWRPs provided by this cookbook are not meant to be used by themselves; make sure you are familiar with the application
cookbook before proceeding.
rails
The rails
sub-resource LWRP deals with deploying Ruby on Rails webapps from an SCM repository. It uses the deploy_revision
LWRP to perform the bulk of its tasks, and many concepts and parameters map directly to it. Check the documentation for deploy_revision
for more information.
For applications that use Bundler, if a Gemfile.lock is present then gems will be installed with bundle install --deployment
, which results in gems being installed inside the application directory.
When running Bundler, unnecessary groups will be skipped. The list of groups to skip is determined with this algorithm:
- start with this Array:
development test cucumber staging production
; - the group corresponding to the current environment will be removed from the Array;
- if the
bundler_without_groups
attribute is set, those groups will be added to the Array.
For example, for a node running in the production
Chef environment, and given:
bundler_without_groups ["mysql"]
Bundler will be run with:
bundle install --without development test cucumber staging mysql
Attribute Parameters
- gems: an Array of gems to install
- bundler: if true,
bundler
will always be used; if false it will never be. Defaults to true ifgems
includes bundler - bundle_command: The command to execute when calling bundler commands. Useful for specifing alternate commands such as RVM wrappers. Defaults to
bundle
. - bundler_deployment: if true, Bundler will be run with the
--deployment
options. Defaults to true if aGemfile.lock
is present - bundler_without_groups: an Array of additional Bundler groups to skip
- database_master_role: if a role name is provided, a Chef search will be run to find a node with than role in the same environment as the current role. If a node is found, its IP address will be used when rendering the
database.yml
file, but see the "Database block parameters" section below - database_template: the name of the template that will be rendered to create the
database.yml
file; if specified it will be looked up in the application cookbook. Defaults to "database.yml.erb" from this cookbook - database: a block containing additional parameters for configuring the database connection
- precompile_assets: if true, precompile assets for the Rails 3 asset pipeline. The default is nil, in which case we will try to autodetect whether the pipeline is in use by looking for
config/assets.yml
Database and memcached block parameters
The database and memcached blocks can accept any method, which will result in an entry being created in the @database
and @memcached_envs
Hashes which are passed to the respective templates. See Usage below for more information.
passenger_apache2
The passenger_apache2
sub-resource LWRP configures Apache 2 with Passenger to run the application.
Attribute Parameters
- server_aliases: an Array of server aliases
- webapp_template: the template to render to create the virtual host configuration. Defaults to "#{application name}.conf.erb"
- params: an Hash of extra parameters that will be passed to the template
unicorn
The unicorn
sub-resource LWRP configures Unicorn to run the application.
Attribute Parameters
- bundler: if true, Unicorn will be run with
bundle exec
; if false it will be installed and run from the default gem path. Defaults to inheriting this setting from the rails LWRP - preload_app: passed to the
unicorn_config
LWRP - worker_processes: passed to the
unicorn_config
LWRP - before_fork: passed to the
unicorn_config
LWRP - port: passed to the
unicorn_config
LWRP - worker_timeout: passed to the
unicorn_config
LWRP
memcached
The memcached
sub-resource LWRP manages configuration for a Rails-compatible Memcached client.
Attribute Parameters
- role: a Chef search will be run to find a node with than role in the same environment as the current node. If a node is found, its IP address will be used when rendering the
memcached.yml
file. - options: a block containing additional parameters for configuring the memcached client
Usage
A sample application that needs a database connection:
application "redmine" do
path "/usr/local/www/redmine"
rails do
database do
database "redmine"
username "redmine"
password "awesome_password"
end
database_master_role "redmine_database_master"
end
passenger_apache2 do
end
end
You can invoke any method on the database block:
application "my-app" do
path "..."
repository "..."
revision "..."
rails do
database_master_role "my-app_database_master"
database do
database 'name'
quorum 2
replicas %w[Huey Dewey Louie]
end
end
end
The corresponding entries will be passed to the context template:
<%= @database['quorum'] %>
<%= @database['replicas'].join(',') %>
A sample application that connects to memcached:
application "my-app" do
path "..."
repository "..."
revision "..."
memcached do
role "memcached_master"
options do
ttl 1800
memory 256
end
end
end
This will generate a config/memcached.yml file:
production:
ttl: 1800
memory: 256
servers:
- 192.168.0.10:11211
License and Author
Author:: Adam Jacob (adam@opscode.com)
Author:: Andrea Campi (andrea.campi@zephirworks.com.com)
Author:: Joshua Timberman (joshua@opscode.com)
Author:: Seth Chisamore (schisamo@opscode.com)
Copyright 2009-2012, Opscode, Inc.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
Dependent cookbooks
application >= 0.0.0 |
unicorn >= 0.0.0 |
apache2 >= 0.0.0 |
passenger_apache2 >= 0.0.0 |
runit ~> 1.0 |