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encrypted_attributes (9) Versions 0.5.1

Installs and enables chef-encrypted-attributes gem: Chef plugin to add Node encrypted attributes support using client keys.

Policyfile
Berkshelf
Knife
cookbook 'encrypted_attributes', '= 0.5.1', :supermarket
cookbook 'encrypted_attributes', '= 0.5.1'
knife supermarket install encrypted_attributes
knife supermarket download encrypted_attributes
README
Dependencies
Changelog
Quality 100%

Description

Cookbook Version
Dependency Status
Code Climate
Build Status
Coverage Status
Inline docs

Installs and enables chef-encrypted-attributes gem: Chef plugin to add Node encrypted attributes support using client keys.

Requirements

Supported Platforms

This cookbook has been tested on the following platforms:

  • Amazon Linux
  • CentOS
  • Debian
  • Fedora
  • FreeBSD
  • RedHat
  • Ubuntu

Please, let us know if you use it successfully on any other platform.

Required Cookbooks

Required Applications

  • Ruby 1.9.3 or higher.

See also the requirements of the chef-encrypted-attributes gem.

Attributes

Attribute Default Description
node['encrypted_attributes']['version'] calculated chef-encrypted-attributes gem version to install. The latest stable version is installed by default.
node['encrypted_attributes']['mirror'] nil chef-encrypted-attributes mirror to download the gem from. For cases where you do not want to use RubyGems.
node['encrypted_attributes']['data_bag']['name'] 'global' chef-encrypted-attributes user keys, data bag name.
node['encrypted_attributes']['data_bag']['item'] 'chef_users' chef-encrypted-attributes user keys, data bag item name.
node['dev_mode'] calculated If this is true, the Chef::EncryptedAttributesHelpers library will work with unencrypted attributes instead of encrypted attributes. For testing purposes.

Recipes

encrypted_attributes::default

Installs and loads the chef-encrypted-attributes gem.

encrypted_attributes::expose_key

Exposes the Client Public Key in attributes. This is a workaround for the Chef Clients Limitation problem. Should be included by all nodes that need to have read privileges on the attributes.

encrypted_attributes::users_data_bag

Configures chef-encrypted-attributes Chef User keys reading them from a data bag. This is a workaround for the Chef Users Limitation problem.

Helper Libraries

See the Chef::EncryptedAttributesHelpers documentation.

Usage Examples

Including in a Cookbook Recipe

You can simply include it in a recipe:

include_recipe 'encrypted_attributes'

Don't forget to include the encrypted_attributes cookbook as a dependency in the metadata.

# metadata.rb
[...]

depends 'encrypted_attributes'

Including in the Run List

Another alternative is to include the default recipe in your Run List:

{
  "name": "ftp.onddo.com",
  [...]
  "run_list": [
    [...]
    "recipe[encrypted_attributes]"
  ]
}

encrypted_attributes::default Recipe Usage Example

include_recipe 'encrypted_attributes'

self.class.send(:include, Opscode::OpenSSL::Password) # include the #secure_password method

if Chef::EncryptedAttribute.exists?(node['myapp']['ftp_password'])
  # update with the new keys
  Chef::EncryptedAttribute.update(node.set['myapp']['ftp_password'])

  # read the password
  ftp_pass = Chef::EncryptedAttribute.load(node['myapp']['ftp_password'])
else
  # create the password and save it
  ftp_pass = secure_password
  node.set['myapp']['ftp_password'] = Chef::EncryptedAttribute.create(ftp_pass)
end

# use `ftp_pass` for something here ...

You can also use the Chef::EncryptedAttributesHelpers helpers to simplify its use:

include_recipe 'encrypted_attributes'
self.class.send(:include, Chef::EncryptedAttributesHelpers)

ftp_pass = encrypted_attribute_write(['myapp', 'ftp_password']) do
  self.class.send(:include, Opscode::OpenSSL::Password)
  secure_password
end

Note: This example requires the openssl cookbook.

See the chef-encrypted-attributes gem Usage section for more examples.

encrypted_attributes::users_data_bag Recipe Usage Example

This recipe should be called before using the encrypted attributes. It sets the Chef::Config[:encrypted_attributes][:keys] option reading the keys from a data bag.

Before using this recipe, you must create the required data bag:

$ knife data bag create global_data chef_users

You should create a data bag item with the following format:

{
  "id": "chef_users",
  "bob": "-----BEGIN PUBLIC KEY-----\nMIIBIjANBgkqhkiG9w0BAQEFA...",
  "alice": "-----BEGIN PUBLIC KEY-----\nMIIBIjANBgkqhkiG9w0BAQEFA..."
}

The keys can be set in array of strings format if you prefer:

{
  "id": "chef_users",
  "bob": [
    "-----BEGIN PUBLIC KEY-----",
    "MIIBIjANBgkqhkiG9w0BAQEFA...",
    ...
  ],
  "alice": [
    "-----BEGIN PUBLIC KEY-----",
    "MIIBIjANBgkqhkiG9w0BAQEFA...",
    ...
  ]
}

You can retrieve user public keys with knife user show USER -a public_key -f json.

Then, you can use this data bag to configure the Chef::Config[:encrypted_attributes][:keys] chef-encrypted-attributes configuration only by calling the recipe:

node.default['encrypted_attributes']['data_bag']['name'] = 'global_data'
include_recipe 'encrypted_attributes::users_data_bag'

# if Chef::EncryptedAttribute.exist?(...)
#   Chef::EncryptedAttribute.update(...)
# else
#   node.set[...][...] = Chef::EncryptedAttribute.create(...)
# ...

Note: This data bag does not need to be encrypted, because it only stores public keys.

Using Chef::EncryptedAttributesHelpers to Encrypt MySQL Passwords

In the following example we use the official mysql cookbook and its mysql_service resource to save the passwords encrypted in these attributes:

  • node['myapp']['mysql']['server_root_password']
  • node['myapp']['mysql']['server_debian_password']
  • node['myapp']['mysql']['server_repl_password']
# Include the #secure_password method from the openssl cookbook
self.class.send(:include, Opscode::OpenSSL::Password)

# Install Encrypted Attributes gem
include_recipe 'encrypted_attributes'

# Include the Encrypted Attributes cookbook helpers
self.class.send(:include, Chef::EncryptedAttributesHelpers)

# We can use an attribute to enable or disable encryption (recommended for tests)
# self.encrypted_attributes_enabled = node['myapp']['encrypt_attributes']

# Encrypted Attributes will be generated randomly and saved in in the
# node['myapp']['mysql'] attribute encrypted.
def generate_mysql_password(user)
  key = "server_#{user}_password"
  encrypted_attribute_write(['myapp', 'mysql', key]) { secure_password }
end

# Generate the encrypted passwords
mysql_root_password = generate_mysql_password('root')
mysql_debian_password = generate_mysql_password('debian')
mysql_repl_password = generate_mysql_password('repl')

mysql_service node['mysql']['service_name'] do
  version node['mysql']['version']
  port node['mysql']['port']
  data_dir node['mysql']['data_dir']
  server_root_password mysql_root_password
  server_debian_password mysql_debian_password
  server_repl_password mysql_repl_password
  allow_remote_root node['mysql']['allow_remote_root']
  remove_anonymous_users node['mysql']['remove_anonymous_users']
  remove_test_database node['mysql']['remove_test_database']
  root_network_acl node['mysql']['root_network_acl']
  action :create
end

Testing

See TESTING.md.

Contributing

Please do not hesitate to open an issue with any questions or problems.

See CONTRIBUTING.md.

TODO

See TODO.md.

License and Author

Author: Xabier de Zuazo (xabier@onddo.com)
Contributor: @chhsiung
Copyright: Copyright (c) 2014, Onddo Labs, SL. (www.onddo.com)
License: Apache License, Version 2.0
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.

encrypted_attributes CHANGELOG

This file is used to list changes made in each version of the encrypted_attributes cookbook.

v0.5.1 (2015-04-01)

  • Set ffi_yajl version to 1.0.2 (issue #1, thanks @chhsiung).
  • Berksfile: Fix my_cookbook variable value.
  • Gemfile: update vagrant-wrapper to 2.

v0.5.0 (2014-12-15)

  • Add ::expose_key recipe.
  • Update to work with chef-encrypted-attributes gem 0.4.0.
    • Use build-essential and install gem depends only when required.
    • Add Chef::EncryptedAttributesRequirements class.
    • Install gem dependencies explicitly.
  • Fix gem specific and prerelease versions install.
  • Fix integration tests for Chef 12.0.0 and 12.0.1.
  • encrypted_attributes_test: Save the attribute as normal.
  • kitchen: Add suites for previous gem, Chef 11.12, 11.16 and Chef 12.
  • Update to RuboCop 0.28.0.
  • travis.yml: Use the new build env.
  • Gemfile: Use fixed foodcritic and RuboCop versions.
  • Add Ruby documentation, integrated with yard and inch.
    • Move Chef::EncryptedAttributesHelpers documentation to gem docs.
  • README: Add inch-ci documentation badge.

v0.4.0 (2014-11-08)

  • Allow Chef::EncryptedAttributesHelpers to be used from LWRPs.
  • Enable apt compile time update, required by build-essential.
  • FreeBSD compiletime attribute changed to compiletime_portsnap.
  • Add more unit tests: coverage 100%.
  • Integrate tests with coveralls.io.
  • Integrate tests with should_not gem.
  • Fix new RuboCop offenses.
  • Update to ChefSpec 4.1.
  • Update .kitchen.cloud.yml file.
  • TESTING.md:
    • Add Guarfile requirements.
    • Use DO access token and some titles changed.

v0.3.0 (2014-10-21)

  • Add FreeBSD support
  • Berksfile, Rakefile and Guarfile, generic templates copied
  • Added rubocop.yml with AllCops:Include
  • README:
    • Add an example to encrypt MySQL passwords
    • Always include encrypted_attributes recipe to force compile time build-essentials
    • Use single quotes in examples
    • Use markdown for tables
  • Add LICENSE file
  • kitchen.yml: remove empty attributes key
  • License headers homogenized

v0.2.2 (2014-10-02)

  • Added platform support documentation
  • kitchen.yml file updated
  • Rakefile: rubocop enabled
  • Gemfile:
    • Replaced vagrant by vagrant-wrapper
    • Added vagrant-wrapper version with pessimistic operator
    • Berkshelf updated to 3.1
  • Guardfile added
  • TODO: use checkboxes

v0.2.1 (2014-08-28)

  • EncryptedAttributesHelpers bugfix: avoid #node.save on chef-solo
  • EncryptedAttributesHelpers: some code duplication removed
  • README: added gemnasium and codeclimate badges

v0.2.0 (2014-08-26)

  • encrypted_attributes_test::default: node#save unless chef-solo
  • Gemfile:
    • RSpec ~> 2.14.0 to avoid uninitialized constant RSpec::Matchers::BuiltIn::RaiseError::MatchAliases error
    • Updates: ChefSpec 4 and foodcritic 4
    • Added chef-encrypted-attributes gem for unit tests
    • Gemfile clean up
  • README:
    • README file split in multiple files
    • Replace community links by Supermarket links
    • Fixed ::users_data_bag example using #exist? instead of #exists_on_node?
    • Added a link to chef-encrypted-attributes gem requirements
    • Multiple small fixes and improvements
  • ::default: avoid gem install error when no version is specified
  • Install gcc dependency (build-essential cookbook)
  • Added Chef::EncryptedAttributesHelpers helper library
    • Added EncryptedAttributesHelpers unit tests
  • Added RuboCop checking, all offenses fixed
  • TODO: added verify gem task
  • test/kitchen directory removed

v0.1.0 (2014-05-22)

  • Initial release of encrypted_attributes

Foodcritic Metric
            

0.5.1 passed this metric