hostsfile LWRP

hostsfile provides an LWRP for managing your /etc/hosts (or Windows equivalent) file using Chef.

Requirements

Chef 11 or higher
Ruby 1.9.3 or higher

Please stop opening Pull Requests to restore Ruby 1.8 support! Any of the 1.x.y series of this cookbook will work with Chef 10 and Ruby 1.8. You can use Opscode's Omnibus installer to install Ruby 1.9+ and Seth Chisamore's Vagrant Omnibus plugin to get Ruby 1.9+ on your Vagrant box.

Attributes

Attribute	Description	Example	Default
ip_address	(name attribute) the IP address for the entry	`1.2.3.4`
hostname	(required) the hostname associated with the entry	`example.com`
unique	remove any existing entries that have the same `hostname`	`true`	`false`
aliases	array of aliases for the entry	`['www.example.com']`	`[]`
comment	a comment to append to the end of the entry	`'interal DNS server'`	`nil`
priority	the relative position of this entry	`20`	(varies, see Priorities section)

Actions

Please note: In v0.1.2, specifying a hostname or alias that existed in another automatically removed that hostname from the other entry before. In v2.1.0, the unique option was added to give the user case-by-case control of this behavior. For example, given an /etc/hosts file that contains:

1.2.3.4          example.com www.example.com

when the Chef recipe below is converged:

hostsfile_entry '2.3.4.5' do
  hostname  'www.example.com'
  unique    true
end

then the /etc/hosts file will look like this:

1.2.3.4          example.com
2.3.4.5          www.example.com

Not specifying the unique parameter will result in duplicate hostsfile entries.

`create`

Creates a new hosts file entry. If an entry already exists, it will be overwritten by this one.

hostsfile_entry '1.2.3.4' do
  hostname  'example.com'
  action    :create
end

This will create an entry like this:

1.2.3.4          example.com

`create_if_missing`

Create a new hosts file entry, only if one does not already exist for the given IP address. If one exists, this does nothing.

hostsfile_entry '1.2.3.4' do
  hostname  'example.com'
  action    :create_if_missing
end

`append`

Append a hostname or alias to an existing record. If the given IP address doesn't not already exist in the hostsfile, this method behaves the same as create. Otherwise, it will append the additional hostname and aliases to the existing entry.

1.2.3.4         example.com www.example.com # Created by Chef

hostsfile_entry '1.2.3.4' do
  hostname  'www2.example.com'
  aliases   ['foo.com', 'foobar.com']
  comment   'Append by Recipe X'
  action    :append
end

would yield:

1.2.3.4         example.com www.example.com www2.example.com foo.com foobar.com # Created by Chef, Appended by Recipe X

`update`

Updates the given hosts file entry. Does nothing if the entry does not exist.

hostsfile_entry '1.2.3.4' do
  hostname  'example.com'
  comment   'Update by Chef'
  action    :update
end

This will create an entry like this:

1.2.3.4           example # Updated by Chef

`remove`

Removes an entry from the hosts file. Does nothing if the entry does not exist.

hostsfile_entry '1.2.3.4' do
  action    :remove
end

This will remove the entry for 1.2.3.4.

Usage

If you're using Berkshelf, just add hostsfile to your Berksfile:

cookbook 'hostsfile'

Otherwise, install the cookbook from the community site:

knife cookbook site install hostsfile

Have any other cookbooks depend on hostsfile by editing editing the metadata.rb for your cookbook.

# metadata.rb
depends 'hostsfile'

Priority

Priority is a relatively new addition to the cookbook. It gives you the ability to (somewhat) specify the relative order of entries. By default, the priority is calculated for you as follows:

Local, loopback
IPV4
IPV6

However, you can override it using the priority option.

Contributing

Fork the project
Create a feature branch corresponding to you change
Commit and test thoroughly
Create a Pull Request on github

License & Authors

Author:: Seth Vargo (sethvargo@gmail.com)

Copyright 2012-2013, Seth Vargo
Copyright 2012, CustomInk, LLC

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.

elhsmart/hostsfile