Install `Vault`.

cookbooks/vault/attributes.rb

@@ -0,0 +1,8 @@
+# -------------------------------------------
+# Specifying the default settings:
+# -------------------------------------------
+node.reverse_merge!({
+  'vault' => {
+    'manager' => false,
+  }
+})

cookbooks/vault/default.rb

@@ -0,0 +1,4 @@
+include_recipe './attributes.rb'
+
+include_recipe './install.rb'
+

cookbooks/vault/install.rb

@@ -0,0 +1,20 @@
+# Install `Consul`:
+KEYSRV = "https://apt.releases.hashicorp.com/gpg"
+ID = "A3219F7B"
+
+execute "apt-key adv --keyserver #{KEYSRV} --recv-keys #{ID}" do
+  not_if 'apt-key list | grep HashiCorp'
+end
+
+# Retrieve the Ubuntu code:
+DIST = run_command('lsb_release -cs').stdout.chomp
+
+# Deploy the `apt` sources:
+template '/etc/apt/sources.list.d/hashicorp.list' do
+  action :create
+  variables(distribution: DIST)
+end
+
+execute 'apt update'
+
+package 'vault'

cookbooks/vault/templates/etc/apt/sources.list.d/hashicorp.list

@@ -0,0 +1 @@
+deb [arch=amd64] https://apt.releases.hashicorp.com <%= @distribution %> main