[chef] Re: Check for changed attribute values

[Joe Nuspl < >]

Within a chef client run?  You could do something like…

last = Chef::Node.load(node.name)

if last.default[‘some-attribute’] != node.default[‘some-attribute’]

# do something

end

This only works is you call Chef::Node.load before any recipe does a "node.save”.  Substitute “override” for “default” if you’re looking at overrides.

If external to a client run and you are loading node attributes via role/cookbook/data_bag backed by git, you could use "knife node show” and compare that to what the new code would load and then execute rake.

Hope this helps.

Joe

On Mar 18, 2014, at 9:06 AM, Stewart, Curtis < "> > wrote:

Is there anyway to check if a node attribute has changed since the last chef-client run?

My particular case is to run a rake task ONLY IF the specified git branch attribute has changed since the last chef-client run.

Thanks,

Curtis