Starting with chef-solo

2014-11-30 18:39:07 +0000

This is part of my quest to sort out my website. Starting with chef-solo.

Earlier in this quest, I talked about using Chef Solo with Vagrant.

Now we need to use it in AWS. This is essentially the same as using it on any other server, but it’s different from using it in Vagrant, where the Vagrant provision did some of the work for us.

Note: I could have used vagrant to configure the AWS instance; I didn’t want to mess around with AWS Access Keys and secrets today. In future, I might explore using vagrant to manage this.

Revision Control

Because I’m that kind of person, and because it’s the right thing to do, I’m going to keep as much of this under revision control as possible. In short, that means github.

git clone https://github.com/rlipscombe/chef-repo

solo.rb

chef-solo needs a configuration file, called solo.rb. It looks like this:

ssl_verify_mode :verify_peer
cookbook_path File.expand_path("../cookbooks", __FILE__)
json_attribs File.expand_path("../node.json", __FILE__)

node.json

We want to put our node into at least one role, so put the following in the node.json file:

{
    "run_list": [ "role[base]" ]
}

Roles

Create a file, roles/base.rb containing:

name 'base'

run_list(
        'apt'
)

Cookbooks

We’re managing the cookbooks with berkshelf, so we’ll need a Berksfile that looks like this:

source "https://supermarket.getchef.com"

cookbook 'apt'

And then we’ll need to install those cookbooks:

berks install
berks vendor cookbooks/

Running chef-solo

cd ~/chef-repo
sudo chef-solo -c solo.rb

Hurrah!

And that should happily “converge”, meaning that it’s run apt-get update for us.