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

[AJ Christensen < >]

..run with -l debug to see the StringIO exception being bubbled up
from popen or whatever the fuck it was, already fixed in the RC.

–AJ

On 28 September 2011 16:18, AJ Christensen 
<
 >
 wrote:
> 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
>>
>