I was trying to install Opscode’s Chef using the “Bootstrap Chef Rubygems Installation” method. It was failing hard with something about a ‘hotspot’.

[mbailey@island chef]$ sudo chef-solo -c /etc/chef/solo.rb -j ~/chef.json -r http://s3.amazonaws.com/chef-solo/bootstrap-latest.tar.gz
[sudo] password for mbailey:
[Mon, 14 Feb 2011 15:20:34 +1100] INFO: Setting the run_list to ["recipe[chef::bootstrap_server]"] from JSON
[Mon, 14 Feb 2011 15:20:34 +1100] INFO: Starting Chef Run (Version 0.9.12.1)
[Mon, 14 Feb 2011 15:20:34 +1100] ERROR: Running exception handlers
[Mon, 14 Feb 2011 15:20:34 +1100] ERROR: Exception handlers complete
/usr/local/lib/ruby/gems/1.9.1/gems/mbailey-chef-0.9.12.1/lib/chef/node/attribute.rb:428:in `method_missing': Attribute hotspot is not defined! (ArgumentError)

There’s a bug in ohai-0.5.8 (19 Oct 2010) that is fixed in HEAD. The simple steps fixed my problem and allowed me to install Chef.

$ git clone git://github.com/opscode/ohai.git
$ cd ohai
$ sudo rake install
gem install pkg/ohai-0.5.8 # but I wanted sudo gem install
Successfully installed ohai-0.5.8
1 gem installed
$ sudo gem install pkg/ohai-0.5.8.gem
Successfully installed ohai-0.5.8
1 gem installed

I hope this saves you some time and frustration.