diff --git a/ceph-storage-post.yaml b/ceph-storage-post.yaml
index 2a0fa04377..12d03f188c 100644
--- a/ceph-storage-post.yaml
+++ b/ceph-storage-post.yaml
@@ -5,4 +5,14 @@ description: 'Ceph Storage Post Deployment'
 
 parameters:
   servers:
-    type: json
\ No newline at end of file
+    type: json
+
+resources:
+
+  # Note, this should come last, so use depends_on to ensure
+  # this is created after any other resources.
+  ExtraConfig:
+    type: OS::TripleO::NodeExtraConfigPost
+    properties:
+        servers: {get_param: servers}
+
diff --git a/cinder-storage-post.yaml b/cinder-storage-post.yaml
index 0331685aa3..0881838140 100644
--- a/cinder-storage-post.yaml
+++ b/cinder-storage-post.yaml
@@ -6,3 +6,13 @@ description: 'Common Block Storage Post Deployment'
 parameters:
   servers:
     type: json
+
+resources:
+
+  # Note, this should come last, so use depends_on to ensure
+  # this is created after any other resources.
+  ExtraConfig:
+    type: OS::TripleO::NodeExtraConfigPost
+    properties:
+        servers: {get_param: servers}
+
diff --git a/compute-post.yaml b/compute-post.yaml
index 8c49709f14..bd7639c527 100644
--- a/compute-post.yaml
+++ b/compute-post.yaml
@@ -6,3 +6,14 @@ description: 'Compute Post Deployment'
 parameters:
   servers:
     type: json
+
+resources:
+
+
+  # Note, this should come last, so use depends_on to ensure
+  # this is created after any other resources.
+  ExtraConfig:
+    type: OS::TripleO::NodeExtraConfigPost
+    properties:
+        servers: {get_param: servers}
+
diff --git a/controller-post.yaml b/controller-post.yaml
index 31a3062a34..e630c221f8 100644
--- a/controller-post.yaml
+++ b/controller-post.yaml
@@ -6,3 +6,12 @@ description: 'Controller Post Deployment'
 parameters:
   servers:
     type: json
+
+resources:
+
+  # Note, this should come last, so use depends_on to ensure
+  # this is created after any other resources.
+  ExtraConfig:
+    type: OS::TripleO::NodeExtraConfigPost
+    properties:
+        servers: {get_param: servers}
diff --git a/extraconfig/post_deploy/default.yaml b/extraconfig/post_deploy/default.yaml
new file mode 100644
index 0000000000..ddfe02432b
--- /dev/null
+++ b/extraconfig/post_deploy/default.yaml
@@ -0,0 +1,5 @@
+heat_template_version: 2014-10-16
+description: 'Extra Post Deployment Config'
+parameters:
+  servers:
+    type: json
diff --git a/extraconfig/post_deploy/example.yaml b/extraconfig/post_deploy/example.yaml
new file mode 100644
index 0000000000..6b816d40d2
--- /dev/null
+++ b/extraconfig/post_deploy/example.yaml
@@ -0,0 +1,27 @@
+heat_template_version: 2014-10-16
+
+description: >
+  Example extra config for post-deployment
+
+# Note extra parameters can be defined, then passed data via the
+# environment parameter_defaults, without modifying the parent template
+parameters:
+  servers:
+    type: json
+
+resources:
+
+  ExtraConfig:
+    type: OS::Heat::SoftwareConfig
+    properties:
+      group: script
+      config: |
+        #!/bin/sh
+        echo "extra" > /root/extra
+
+  ExtraDeployments:
+    type: OS::Heat::StructuredDeployments
+    properties:
+      servers:  {get_param: servers}
+      config: {get_resource: ExtraConfig}
+      actions: ['CREATE'] # Only do this on CREATE
diff --git a/overcloud-resource-registry-puppet.yaml b/overcloud-resource-registry-puppet.yaml
index 2536053003..c725ae850e 100644
--- a/overcloud-resource-registry-puppet.yaml
+++ b/overcloud-resource-registry-puppet.yaml
@@ -16,6 +16,7 @@ resource_registry:
   OS::TripleO::AllNodes::SoftwareConfig: puppet/all-nodes-config.yaml
   OS::TripleO::BootstrapNode::SoftwareConfig: puppet/bootstrap-config.yaml
   OS::TripleO::NodeUserData: firstboot/userdata_default.yaml
+  OS::TripleO::NodeExtraConfigPost: extraconfig/post_deploy/default.yaml
 
 parameter_defaults:
   EnablePackageInstall: false
diff --git a/overcloud-resource-registry.yaml b/overcloud-resource-registry.yaml
index aba2212a53..7436ea48b9 100644
--- a/overcloud-resource-registry.yaml
+++ b/overcloud-resource-registry.yaml
@@ -16,3 +16,4 @@ resource_registry:
   OS::TripleO::AllNodes::SoftwareConfig: all-nodes-config.yaml
   OS::TripleO::BootstrapNode::SoftwareConfig: bootstrap-config.yaml
   OS::TripleO::NodeUserData: firstboot/userdata_default.yaml
+  OS::TripleO::NodeExtraConfigPost: extraconfig/post_deploy/default.yaml
diff --git a/puppet/ceph-storage-post-puppet.yaml b/puppet/ceph-storage-post-puppet.yaml
index 53ecbe1f51..93cc8d1d6d 100644
--- a/puppet/ceph-storage-post-puppet.yaml
+++ b/puppet/ceph-storage-post-puppet.yaml
@@ -22,3 +22,12 @@ resources:
     properties:
       servers:  {get_param: servers}
       config: {get_resource: CephStoragePuppetConfig}
+
+  # Note, this should come last, so use depends_on to ensure
+  # this is created after any other resources.
+  ExtraConfig:
+    depends_on: CephStorageDeployment_Step1
+    type: OS::TripleO::NodeExtraConfigPost
+    properties:
+        servers: {get_param: servers}
+
diff --git a/puppet/compute-post-puppet.yaml b/puppet/compute-post-puppet.yaml
index 9b7eb0cfe6..26c1a9799b 100644
--- a/puppet/compute-post-puppet.yaml
+++ b/puppet/compute-post-puppet.yaml
@@ -23,3 +23,12 @@ resources:
     properties:
       servers:  {get_param: servers}
       config: {get_resource: ComputePuppetConfig}
+
+  # Note, this should come last, so use depends_on to ensure
+  # this is created after any other resources.
+  ExtraConfig:
+    depends_on: ComputePuppetDeployment
+    type: OS::TripleO::NodeExtraConfigPost
+    properties:
+        servers: {get_param: servers}
+
diff --git a/puppet/controller-post-puppet.yaml b/puppet/controller-post-puppet.yaml
index 009a10aeef..debd715402 100644
--- a/puppet/controller-post-puppet.yaml
+++ b/puppet/controller-post-puppet.yaml
@@ -71,3 +71,12 @@ resources:
       config: {get_resource: ControllerPuppetConfig}
       input_values:
         step: 3
+
+  # Note, this should come last, so use depends_on to ensure
+  # this is created after any other resources.
+  ExtraConfig:
+    depends_on: ControllerDeploymentOvercloudServices_Step4
+    type: OS::TripleO::NodeExtraConfigPost
+    properties:
+        servers: {get_param: servers}
+
diff --git a/puppet/swift-storage-post.yaml b/puppet/swift-storage-post.yaml
index edceba97d6..3e01fe7722 100644
--- a/puppet/swift-storage-post.yaml
+++ b/puppet/swift-storage-post.yaml
@@ -37,3 +37,12 @@ resources:
     properties:
       servers:  {get_param: servers}
       config: {get_resource: StorageRingbuilderPuppetConfig}
+
+  # Note, this should come last, so use depends_on to ensure
+  # this is created after any other resources.
+  ExtraConfig:
+    depends_on: StorageRingbuilderDeployment_Step2
+    type: OS::TripleO::NodeExtraConfigPost
+    properties:
+        servers: {get_param: servers}
+
diff --git a/swift-storage-post.yaml b/swift-storage-post.yaml
index dfac4b2aeb..dd51af0eb8 100644
--- a/swift-storage-post.yaml
+++ b/swift-storage-post.yaml
@@ -6,3 +6,13 @@ description: 'Swift Storage Post Deployment'
 parameters:
   servers:
     type: json
+
+resources:
+
+  # Note, this should come last, so use depends_on to ensure
+  # this is created after any other resources.
+  ExtraConfig:
+    type: OS::TripleO::NodeExtraConfigPost
+    properties:
+        servers: {get_param: servers}
+