Merge pull request #39 from shahaan/mcc-nectar

I'm merging this one, but I'd like a couple of extra features down the line. In particular I would like the dynamic inventory to take as an argument the heat stack name or ID and walk down the tree from there (so that I can run two independent clusters out of the same tenancy). I like the use of ansible_host_group and ansible_ssh_user in the metadata.

dynamicInventory

+#!/usr/bin/env python
+import sys, os, string, subprocess, socket, re
+import copy, shlex,uuid, random, multiprocessing, time, shutil, json
+import novaclient.v1_1.client as nvclient
+import novaclient.exceptions as nvexceptions
+
+class Authenticate:
+	
+	def __init__(self, username, passwd):
+		self.username=username
+		self.passwd=passwd
+		self.tenantName= os.environ['OS_TENANT_NAME']
+		self.tenantID= os.environ['OS_TENANT_ID']
+		self.authUrl="https://keystone.rc.nectar.org.au:5000/v2.0"
+	
+	def gatherInfo(self):
+
+		## Fetch the Nova Object
+
+		nc = nvclient.Client(	auth_url=self.authUrl,
+			username=self.username,
+			api_key=self.passwd,
+			project_id=self.tenantName,
+			tenant_id=self.tenantID,
+			service_type="compute"
+			)
+		inventory = {}
+		inventory['_meta'] = { 'hostvars': {} }
+		for server in nc.servers.list():
+			if server.metadata:
+				hostname = socket.gethostbyaddr(server.networks.values()[0][0])[0]
+				# Set Ansible Host Group
+				if server.metadata['ansible_host_group'] in inventory:
+					inventory[server.metadata['ansible_host_group']].append(hostname)
+				else:
+					inventory[server.metadata['ansible_host_group']] = [hostname]
+				# Set the other host variables
+				inventory['_meta']['hostvars'][hostname] = {}
+				inventory['_meta']['hostvars'][hostname]['ansible_ssh_user'] =  server.metadata['ansible_ssh_user']
+				inventory['_meta']['hostvars'][hostname]['ansible_ssh_private_key_file'] = server.metadata['ansible_ssh_private_key_file']	
+				
+			else:
+				continue
+		print json.dumps(inventory)
+
+if __name__ == "__main__":
+	username = os.environ['OS_USERNAME']
+	passwd = os.environ['OS_PASSWORD']
+	auth = Authenticate(username, passwd)
+	auth.gatherInfo()

headNode.yaml

+--- 
+description: " A simple template to boot a 3 node cluster"
+heat_template_version: 2013-05-23
+parameters:
+ image_id:
+  type: string
+  label: Image ID
+  description: Image to be used for compute instance
+  default: a5e74703-f343-415a-aa23-bd0f0aacfc9e
+ key_name:
+  type: string
+  label: Key Name
+  description: Name of key-pair to be used for compute instance
+  default: shahaan
+ availability_z:
+  type: string
+  label: Availability Zone
+  description: Availability Zone to be used for launching compute instance
+  default: monash-01
+resources:
+  headNode:
+   type: "OS::Nova::Server"
+   properties:
+    availability_zone: { get_param: availability_z }
+    flavor: m1.small
+    image: { get_param: image_id }
+    key_name: { get_param: key_name }
+    metadata:
+     ansible_host_group: headNode
+     ansible_ssh_user: ec2-user
+     ansible_ssh_private_key_file: /home/sgeadmin/.ssh/shahaan.pem
+  headVolume:
+   type: OS::Cinder::Volume
+   properties:
+    availability_zone: { get_param: availability_z }
+    description: Volume that will attach the headNode
+    name: headNodeVolume
+    size: 50
+  volumeAttachment:
+   type: OS::Cinder::VolumeAttachment
+   properties:
+    instance_uuid: { get_resource: headNode }
+    volume_id: { get_resource: headVolume }

installNFS.yml

@@ -3,10 +3,7 @@
   hosts: openvpn-servers
   remote_user: ec2-user
   roles:
-    - easy-rsa-common
-    - easy-rsa-CA
-    - easy-rsa-certificate
-    - OpenVPN-Server 
+    #- OpenVPN-Server 
     - nfs-server
   sudo: true
   vars: 
@@ -15,9 +12,9 @@
   hosts: openvpn-clients
   remote_user: ec2-user
   roles:
-    - easy-rsa-common
-    - easy-rsa-certificate 
-    - OpenVPN-Client
+    #- easy-rsa-common
+    #- easy-rsa-certificate 
+    #- OpenVPN-Client
     - syncExports
     - nfs-client
   sudo: true

provisionCluster.yaml

+--- 
+description: " A simple template to boot a 3 node cluster"
+heat_template_version: 2013-05-23
+parameters:
+ image_id:
+  type: string
+  label: Image ID
+  description: Image to be used for compute instance
+  default: a5e74703-f343-415a-aa23-bd0f0aacfc9e
+ key_name:
+  type: string
+  label: Key Name
+  description: Name of key-pair to be used for compute instance
+  default: shahaan
+ availability_z:
+  type: string
+  label: Availability Zone
+  description: Availability Zone to be used for launching compute instance
+  default: monash-01
+resources:
+  computeNodes:
+   type: "OS::Heat::ResourceGroup"
+   properties:
+    count: 2
+    resource_def:
+     type: "OS::Nova::Server"
+     properties:
+      availability_zone: { get_param: availability_z }
+      flavor: m1.small
+      image: { get_param: image_id }
+      key_name: { get_param: key_name }
+      metadata:
+       ansible_host_group: computeNodes
+       ansible_ssh_user: ec2-user
+       ansible_ssh_private_key_file: /home/sgeadmin/.ssh/shahaan.pem
+  headNodes:
+    type: "OS::Heat::ResourceGroup"
+    properties:
+      count: 1
+      resource_def: 
+       type: headNode.yaml