[chef] Re: How to use Ohai in a EC2 userdata script?

[AJ Christensen < >]

It's broken, gem install ohai --pre

–AJ

On 28 September 2011 16:15, Hedge Hog 
<
 >
 wrote:
> Hi,
> I am using Ohai 0.6.4.
> I don't seem to be able to get Ohai to return EC2 data consistently.
> When I run this ruby script by passing it in via the AMI userdata:
>
>
> require 'ohai'
> o = Ohai::System.new
> o.all_plugins
> o.require_plugin('ec2')
> $stderr.puts o.fetch_metadata
> $stderr.puts o.looks_like_ec2?
> $stderr.puts o[:ec2].inspect
>
> I get the results:
>
> <ec2/ami-data-hash>
> false
> nil
>
> So, the metadata is retrieved, but the second two EC2 methods don't
> seem to work.
> More puzzling is that if I SSH to the instance, and run this same
> script, the o[:ec2] contains the data I'd expect.
>
> So how does one use Ohai, correctly, in an EC2 user data script?
>
> Appreciate any insights.
>
> --
> πόλλ' οἶδ ἀλώπηξ, ἀλλ' ἐχῖνος ἓν μέγα
> [The fox knows many things, but the hedgehog knows one big thing.]
>   Archilochus, Greek poet (c. 680 BC – c. 645 BC)
> http://hedgehogshiatus.com
>