Initial commit

CHANGELOG.md

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+# v0.0.1
+* Initial commit

README.md

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+# DNS
+
+Automatically create DNS records for your nodes

attributes/default.rb

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+default[:dns][:provider] = node[:cloud][:provider]
+default[:dns][:domain] = node[:domain]
+default[:dns][:credentials] = {}
+default[:dns][:disable] = !node[:cloud]
+default[:dns][:entry][:name] = node[:fqdn]
+default[:dns][:entry][:type] = 'A'
+default[:dns][:entry][:value] = node[:ipaddress]
+default[:dns][:chef_client_config] = false

metadata.rb

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+name 'dns'
+maintainer 'Chris Roberts'
+maintainer_email '[email protected]'
+license 'Apache 2.0'
+description 'Create DNS entries for nodes'
+
+version '0.0.1'
+
+depends 'build-essential', '>= 1.1.0' # set minimum so we get compile time support

recipes/chef-client.rb

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+include_recipe 'chef-client::config'
+
+# Force chef-client config to use node name
+begin
+  client_config = node.run_context.resource_collection.lookup("template[#{node["chef_client"]["conf_dir"]}/client.rb]")
+  client_config.variables.update(:chef_node_name => Chef::Config[:node_name])
+rescue => e
+  Chef::Log.warn "Failed to locate chef client.rb template resource. If client.rb is managed, please check why it cannot be found: #{e}"
+end

recipes/default.rb

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+require 'resolv'
+
+include_recipe 'dns::fog'
+
+ruby_block 'Apply DNS information' do
+  block do
+    require 'fog'
+
+    node.default[:dns][:entry][:name] = [node.name, node[:dns][:domain]].join('.')
+
+    con = Fog::DNS.new(
+      node[:dns][:credentials].merge(
+        :provider => node[:dns][:provider]
+      )
+    )
+    domain = con.list_domains.body['domains'].detect do |domain_hash|
+      domain_hash['name'] == node[:dns][:domain]
+    end
+    raise "Failed to locate registered domain in account for configured domain: #{node[:dns][:domain]}" unless domain
+    zone = con.zones.get(domain['id'])
+    raise "Failed to locate zone for configured domain: #{node[:dns][:domain]}" unless zone
+    record = zone.records.detect do |r|
+      r.name == node[:dns][:entry][:name]
+    end
+    if(record)
+      Chef::Log.info "DNS - Found existing record for: #{node[:dns][:entry][:name]}. Updating."
+      Chef::Log.info "DNS - Existing type: #{record.type} Existing value: #{record.value}"
+      record.value = node[:dns][:entry][:value]
+      record.type = node[:dns][:entry][:type].upcase
+      record.save
+    else
+      Chef::Log.info "DNS - No existing record found for #{node[:dns][:entry][:name]}. Creating."
+      zone.records.create(
+        :value => node[:dns][:entry][:value],
+        :name => node[:dns][:entry][:name],
+        :type => node[:dns][:entry][:type].upcase
+      )
+    end
+    Chef::Log.info "DNS - Record saved: name: #{node[:dns][:entry][:name]} type: #{node[:dns][:entry][:type]} value: #{node[:dns][:entry][:value]}"
+  end
+  not_if do
+    node[:dns][:disable] ||
+    begin
+      Resolv.getaddress(node[:dns][:entry][:name]) == node[:dns][:entry][:value]
+    rescue Resolv::ResolvError
+      false
+    end
+  end
+end
+
+if(node[:dns][:chef_client_config])
+  include_recipe 'dns::chef-client'
+end

recipes/fog.rb

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+node.set[:build_essential][:compiletime] = true
+include_recipe 'build-essential'
+
+# Dependencies required by nokogiri (for fog)
+%w(libxslt-dev libxml2-dev).each do |pkg|
+  c_pkg = package(pkg)
+  c_pkg.run_action(:install)
+end
+
+
+# TODO: Remove this once the gem_hell cookbook is ready to roll
+chef_gem "fog" do
+  version '1.10.1'
+  action :install
+end

recipes/fqdn.rb

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+# Ensure we have our entry name defaulted
+node.default[:dns][:entry][:name] = [node.name, node[:dns][:domain]].join('.')
+
+# Set desired hostname and fqdn based on entry name
+node.set[:hosts_file][:hostname] = node[:dns][:entry][:name].split('.').first
+node.set[:hosts_file][:fqdn] = node[:dns][:entry][:name]
+
+include_recipe 'hosts_file'
+
+template 'fqdn_set_hosts_file' do
+  source 'hosts.erb'
+  path node[:hosts_file][:path]
+  mode 0644
+  action :nothing
+  not_if do
+    node[:fqdn] == node[:dns][:entry][:name]
+  end
+end.run_action(:create)
+
+file '/etc/hostname' do
+  content "#{node[:hosts_file][:hostname]}\n"
+end
+
+execute "Set hostname to #{node[:hosts_file][:hostname]}" do
+  action :nothing
+  command "hostname #{node[:hosts_file][:hostname]}"
+  not_if "hostname | grep #{node[:hosts_file][:hostname]}"
+end.run_action(:run)
+
+ohai 'fqdn' do
+  action :nothing
+end.run_action(:reload)
+