knife-attribute

Manipulate Chef attributes via Knife

Installation

Install via rubygems:

gem install knife-attribute

Usage

In this initial release, only node attribute set is implemented, more to follow in the near future.

To work with attributes of type default, normal, override or automatic, use the -t TYPE flag (default if unspecified is normal).

node attribute set

Setting node attributes may be achieved as follows:

knife node attribute set foo.example.org tz 'Australia/Melbourne'

The above would set the foo.example.org node's normal attribute tz to the string Austraila/Melbourne.

You may specify either a regular string, or a JSON structure, ie:

knife node attribute set foo.example.org apache.listen_ports '["80", "443"]' -t override

The above would set the foo.example.org node's override attribute ['apache']['listen_ports'] to the array ["80", "443"].

node attribute get

Getting node attributes may be achieved as follows:

knife node attribute get foo.example.org apache.listen_ports

Use the standard -F FORMAT flag to set the output format for complex data structures.

Unlike other actions, by default the get action will return the combined (effective) value for the attribute, if an attribute type (-t TYPE) is not specified.

knife node attribute set foo.example.org apache.listen_ports -t override -F json

The above would get the foo.example.org node's override attribute ['apache']['listen_ports'] and output it as JSON.

node attribute delete

Deleting node attributes may be achieved as follows:

knife node attribute delete foo.example.org tz

The above would delete the foo.example.org node's normal attribute tz.

knife node attribute set foo.example.org apache.listen_ports -t override

The above would delete the foo.example.org node's override attribute. ['apache']['listen_ports'].

TODO

• Implement attribute get/set/delete for roles
• Implement attribute get/set/delete for environments