From 131ce4fc9742395ca474156f373e56e36ec156a8 Mon Sep 17 00:00:00 2001
From: Matthew Johnson <mjjohnson33@gmail.com>
Date: Fri, 13 Sep 2013 22:48:12 -0400
Subject: [PATCH] add ansible.host_key_checking configuration parameter

---
 plugins/provisioners/ansible/config.rb        | 51 ++++++++++---------
 plugins/provisioners/ansible/provisioner.rb   |  2 +-
 .../source/v2/provisioning/ansible.html.md    |  1 +
 3 files changed, 29 insertions(+), 25 deletions(-)

diff --git a/plugins/provisioners/ansible/config.rb b/plugins/provisioners/ansible/config.rb
index fb162ef27..fbf932a26 100644
--- a/plugins/provisioners/ansible/config.rb
+++ b/plugins/provisioners/ansible/config.rb
@@ -12,38 +12,41 @@ module VagrantPlugins
       attr_accessor :tags
       attr_accessor :skip_tags
       attr_accessor :start_at_task
+      attr_accessor :host_key_checking
 
       # Joker attribute, used to pass unsupported arguments to ansible anyway
       attr_accessor :raw_arguments
 
       def initialize
-        @playbook       = UNSET_VALUE
-        @extra_vars     = UNSET_VALUE
-        @inventory_path = UNSET_VALUE
-        @ask_sudo_pass  = UNSET_VALUE
-        @limit          = UNSET_VALUE
-        @sudo           = UNSET_VALUE
-        @sudo_user      = UNSET_VALUE
-        @verbose        = UNSET_VALUE
-        @tags           = UNSET_VALUE
-        @skip_tags      = UNSET_VALUE
-        @start_at_task  = UNSET_VALUE
-        @raw_arguments  = UNSET_VALUE
+        @playbook          = UNSET_VALUE
+        @extra_vars        = UNSET_VALUE
+        @inventory_path    = UNSET_VALUE
+        @ask_sudo_pass     = UNSET_VALUE
+        @limit             = UNSET_VALUE
+        @sudo              = UNSET_VALUE
+        @sudo_user         = UNSET_VALUE
+        @verbose           = UNSET_VALUE
+        @tags              = UNSET_VALUE
+        @skip_tags         = UNSET_VALUE
+        @start_at_task     = UNSET_VALUE
+        @raw_arguments     = UNSET_VALUE
+        @host_key_checking = "true"
       end
 
       def finalize!
-        @playbook       = nil if @playbook == UNSET_VALUE
-        @extra_vars     = nil if @extra_vars == UNSET_VALUE
-        @inventory_path = nil if @inventory_path == UNSET_VALUE
-        @ask_sudo_pass  = nil if @ask_sudo_pass == UNSET_VALUE
-        @limit          = nil if @limit == UNSET_VALUE
-        @sudo           = nil if @sudo == UNSET_VALUE
-        @sudo_user      = nil if @sudo_user == UNSET_VALUE
-        @verbose        = nil if @verbose == UNSET_VALUE
-        @tags           = nil if @tags == UNSET_VALUE
-        @skip_tags      = nil if @skip_tags == UNSET_VALUE
-        @start_at_task  = nil if @start_at_task == UNSET_VALUE
-        @raw_arguments  = nil if @raw_arguments == UNSET_VALUE
+        @playbook          = nil if @playbook == UNSET_VALUE
+        @extra_vars        = nil if @extra_vars == UNSET_VALUE
+        @inventory_path    = nil if @inventory_path == UNSET_VALUE
+        @ask_sudo_pass     = nil if @ask_sudo_pass == UNSET_VALUE
+        @limit             = nil if @limit == UNSET_VALUE
+        @sudo              = nil if @sudo == UNSET_VALUE
+        @sudo_user         = nil if @sudo_user == UNSET_VALUE
+        @verbose           = nil if @verbose == UNSET_VALUE
+        @tags              = nil if @tags == UNSET_VALUE
+        @skip_tags         = nil if @skip_tags == UNSET_VALUE
+        @start_at_task     = nil if @start_at_task == UNSET_VALUE
+        @raw_arguments     = nil if @raw_arguments == UNSET_VALUE
+        @host_key_checking = nil if @host_key_checking == UNSET_VALUE
       end
 
       def validate(machine)
diff --git a/plugins/provisioners/ansible/provisioner.rb b/plugins/provisioners/ansible/provisioner.rb
index e353b5fed..bbfda33b3 100644
--- a/plugins/provisioners/ansible/provisioner.rb
+++ b/plugins/provisioners/ansible/provisioner.rb
@@ -38,7 +38,7 @@ module VagrantPlugins
 
         # Write stdout and stderr data, since it's the regular Ansible output
         command << {
-          :env => { "ANSIBLE_FORCE_COLOR" => "true" },
+          :env => { "ANSIBLE_FORCE_COLOR" => "true" , "ANSIBLE_HOST_KEY_CHECKING" => "#{config.host_key_checking}" },
           :notify => [:stdout, :stderr],
           :workdir => @machine.env.root_path.to_s
         }
diff --git a/website/docs/source/v2/provisioning/ansible.html.md b/website/docs/source/v2/provisioning/ansible.html.md
index 9b805a918..e72588e33 100644
--- a/website/docs/source/v2/provisioning/ansible.html.md
+++ b/website/docs/source/v2/provisioning/ansible.html.md
@@ -141,3 +141,4 @@ by the sudo command.
 * `ansible.raw_arguments` is an *unsafe wildcard* string that can be used to take advantage of `ansible-playbook` arguments that are not (yet) supported by this Vagrant provisioner plugin. This can be very useful when integrating with bleeding edge Ansible versions. Following precedence rules apply:
   * Any supported options (described above) will override conflicting `raw_arguments` value (e.g. `--tags` or `--start-at-task`)
   * Vagrant default user authentication can be overridden via `raw_arguments` (with custom values for `--user` and `--private-key`)
+* `ansible.host_key_checking` can be set to `false` which will disable host key checking and prevent `"FAILED: (25, 'Inappropriate ioctl for device')"` errors from being reported during provisioner runs.  The default value is `true`, which matches the default behavior of Ansible 1.2.1 and later.