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Description

Creates a path to install custom ohai plugins and loads it with Ohai during a chef-client run. tun0.rb is the plugin that uses the tun0 interface IP address as the ipaddress automatic attribute.

Attributes

  • node['ohai']['plugin_path'] - location to drop off plugins directory, default is /etc/chef/ohai_plugins. This is not FHS-compliant, an FHS location would be something like /var/lib/ohai/plugins, or /var/lib/chef/ohai_plugins or similar.

    Neither an FHS location or the default value of this attribute are in the default Ohai plugin path. Set the Ohai plugin path with the config setting "Ohai::Config[:plugin_path]" in the Chef config file (the chef-client::config recipe does this automatically for you!). The attribute is not set to the default plugin path that Ohai ships with because we don't want to risk destroying existing essential plugins for Ohai.

  • node['ohai']['plugins'] - sources of plugins, defaults to the files/default/plugins directory of this cookbook. You can add additional cookbooks by adding the name of the cookbook as a key and the path of the files directory as the value. You have to make sure that you don't have any file conflicts between multiple cookbooks. The last one to write wins.

Usage

Include ohai-openvpn-ipaddress after your openvpn recipe and run notifies :reload, 'ohai[custom_plugins]', :delayed within your openvpn recipe.

For information on how to write custom plugins for Ohai, please see the Chef wiki pages.

http://wiki.opscode.com/display/chef/Writing+Ohai+Plugins

PLEASE NOTE - This recipe reloads the Ohai plugins a 2nd time during the Chef run if:

  • The "Ohai::Config[:plugin_path]" config setting has NOT been properly set in the Chef config file
  • The "Ohai::Config[:plugin_path]" config setting has been properly set in the Chef config file and there are updated plugins dropped off at "node['ohai']['plugin_path']".

License & Authors

Based off https://github.com/opscode-cookbooks/ohai

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.