From c5e1c001bb83b30954af8fcdce4502a8926e1195 Mon Sep 17 00:00:00 2001
From: Steven Hardy <shardy@redhat.com>
Date: Thu, 4 Sep 2014 10:28:52 +0100
Subject: [PATCH] Add a server with volumes ResourceGroup example

Adds an example in response to a ML question, shows how you can
create a resource group containing a number of nested stacks containing
identical volumes and volume attachment resources, then pass in the
server ID to have the volumes attached to one server.

Also moves the current basic example into a resource_group subdirectory,
so we can collect related examples, and make more obvious that the
volume_with_attachment template is part of another example rather than
a standalone example template.

Change-Id: I1ffc1656286a981b6dc219038e03adbb8d5af775
---
 hot/{ => resource_group}/resource_group.yaml  |  0
 hot/resource_group/server_with_volumes.yaml   | 52 +++++++++++++++++++
 .../volume_with_attachment.yaml               | 26 ++++++++++
 3 files changed, 78 insertions(+)
 rename hot/{ => resource_group}/resource_group.yaml (100%)
 create mode 100644 hot/resource_group/server_with_volumes.yaml
 create mode 100644 hot/resource_group/volume_with_attachment.yaml

diff --git a/hot/resource_group.yaml b/hot/resource_group/resource_group.yaml
similarity index 100%
rename from hot/resource_group.yaml
rename to hot/resource_group/resource_group.yaml
diff --git a/hot/resource_group/server_with_volumes.yaml b/hot/resource_group/server_with_volumes.yaml
new file mode 100644
index 00000000..aa3ca9d9
--- /dev/null
+++ b/hot/resource_group/server_with_volumes.yaml
@@ -0,0 +1,52 @@
+heat_template_version: 2013-05-23
+
+description: >
+  Example of using ResourceGroup to attach multiple volumes to an instance
+
+parameters:
+  key_name:
+    type: string
+    description: keypair to enable SSH access to the instance.
+    default: stack_key
+
+  image_id:
+    type: string
+    description: ID of the image to use for the instance to be created.
+    default: cirros-0.3.2-x86_64-disk
+
+  volume_size:
+    type: number
+    description: Size of volume to attach to instance
+    default: 1
+    constraints:
+      - range: {min: 1, max: 10}
+
+  num_volumes:
+    type: number
+    description: Number of volumes to attach to instance
+    default: 2
+    constraints:
+      - range: {min: 1, max: 10}
+
+  instance_type:
+    type: string
+    description: Type of the instance to be created.
+    default: m1.nano
+
+resources:
+  instance:
+    type: OS::Nova::Server
+    properties:
+      image: { get_param: image_id }
+      flavor: { get_param: instance_type }
+      key_name: { get_param: key_name }
+
+  group_of_volumes:
+    type: OS::Heat::ResourceGroup
+    properties:
+      count: {get_param: num_volumes}
+      resource_def:
+        type: volume_with_attachment.yaml
+        properties:
+          instance_id: {get_resource: instance}
+          volume_size: {get_param: volume_size}
diff --git a/hot/resource_group/volume_with_attachment.yaml b/hot/resource_group/volume_with_attachment.yaml
new file mode 100644
index 00000000..28ae35b7
--- /dev/null
+++ b/hot/resource_group/volume_with_attachment.yaml
@@ -0,0 +1,26 @@
+heat_template_version: 2013-05-23
+
+parameters:
+  volume_size:
+    type: number
+    description: Size of volume to attach to instance
+    default: 1
+    constraints:
+      - range: {min: 1, max: 10}
+
+  instance_id:
+    type: string
+    description: Server to attach volume to
+
+resources:
+  volume:
+    type: OS::Cinder::Volume
+    properties:
+      size: { get_param: volume_size }
+      description: Volume for stack
+
+  volume_attachment:
+    type: OS::Cinder::VolumeAttachment
+    properties:
+      volume_id: { get_resource: volume }
+      instance_uuid: { get_param: instance_id}