Add section 3 to shade FAAFO tutorial

Change-Id: I66f0fd64107db479686d6492d8e3e6839db45efb

firstapp/samples/shade/scaling_out.py

@@ -0,0 +1,107 @@
+# step-1
+for instance in conn.list_servers():
+    if instance.name in ['all-in-one','app-worker-1', 'app-worker-2', 'app-controller']:
+        print('Destroying Instance: %s' % instance.name)
+        conn.delete_server(instance.id, wait=True)
+
+for group in conn.list_security_groups():
+    if group['name'] in ['control', 'worker', 'api', 'services']:
+        print('Deleting security group: %s' % group['name'])
+        conn.delete_security_group(group['name'])
+
+# step-2
+api_group = conn.create_security_group('api', 'for API services only')
+conn.create_security_group_rule(api_group['name'], 80, 80, 'TCP')
+conn.create_security_group_rule(api_group['name'], 22, 22, 'TCP')
+
+worker_group = conn.create_security_group('worker', 'for services that run on a worker node')
+conn.create_security_group_rule(worker_group['name'], 22, 22, 'TCP')
+
+services_group = conn.create_security_group('services', 'for DB and AMQP services only')
+conn.create_security_group_rule(services_group['name'], 22, 22, 'TCP')
+conn.create_security_group_rule(services_group['name'], 3306, 3306, 'TCP', remote_group_id=api_group['id'])
+conn.create_security_group_rule(services_group['name'], 5672, 5672, 'TCP', remote_group_id=worker_group['id'])
+conn.create_security_group_rule(services_group['name'], 5672, 5672, 'TCP', remote_group_id=api_group['id'])
+
+# step-3
+def get_floating_ip(conn):
+    '''A helper function to re-use available Floating IPs'''
+    return conn.available_floating_ip()
+
+# step-4
+userdata = '''#!/usr/bin/env bash
+curl -L -s http://git.openstack.org/cgit/stackforge/faafo/plain/contrib/install.sh | bash -s -- \
+    -i database -i messaging
+'''
+
+instance_services = conn.create_server(wait=True, auto_ip=False,
+    name='app-services',
+    image=image_id,
+    flavor=flavor_id,
+    key_name='demokey',
+    security_groups=[services_group['name']],
+    userdata=userdata)
+
+services_ip = conn.get_server_private_ip(instance_services)
+
+# step-5
+userdata = '''#!/usr/bin/env bash
+curl -L -s http://git.openstack.org/cgit/stackforge/faafo/plain/contrib/install.sh | bash -s -- \
+    -i faafo -r api -m 'amqp://guest:guest@%(services_ip)s:5672/' \
+    -d 'mysql+pymysql://faafo:password@%(services_ip)s:3306/faafo'
+''' % { 'services_ip': services_ip }
+
+instance_api_1 = conn.create_server(wait=True, auto_ip=False,
+    name='app-api-1',
+    image=image_id,
+    flavor=flavor_id,
+    key_name='demokey',
+    security_groups=[api_group['name']],
+    userdata=userdata)
+instance_api_2 = conn.create_server(wait=True, auto_ip=False,
+    name='app-api-2',
+    image=image_id,
+    flavor=flavor_id,
+    key_name='demokey',
+    security_groups=[api_group['name']],
+    userdata=userdata)
+
+api_1_ip = conn.get_server_private_ip(instance_api_1)
+api_2_ip = conn.get_server_private_ip(instance_api_2)
+
+for instance in [instance_api_1,  instance_api_2]:
+    floating_ip = get_floating_ip(conn)
+    conn.attach_ip_to_server(instance['id'], floating_ip['id'])
+    print('allocated %(ip)s to %(host)s' % {'ip': floating_ip['floating_ip_address'], 'host': instance['name']})
+
+# step-6
+userdata = '''#!/usr/bin/env bash
+curl -L -s http://git.openstack.org/cgit/stackforge/faafo/plain/contrib/install.sh | bash -s -- \
+    -i faafo -r worker -e 'http://%(api_1_ip)s' -m 'amqp://guest:guest@%(services_ip)s:5672/'
+''' % {'api_1_ip': api_1_ip, 'services_ip': services_ip}
+
+instance_worker_1 = conn.create_server(wait=True, auto_ip=False,
+    name='app-worker-1',
+    image=image_id,
+    flavor=flavor_id,
+    key_name='demokey',
+    security_groups=[worker_group['name']],
+    userdata=userdata)
+
+instance_worker_2 = conn.create_server(wait=True, auto_ip=False,
+    name='app-worker-2',
+    image=image_id,
+    flavor=flavor_id,
+    key_name='demokey',
+    security_groups=[worker_group['name']],
+    userdata=userdata)
+
+instance_worker_3 = conn.create_server(wait=True, auto_ip=False,
+    name='app-worker-3',
+    image=image_id,
+    flavor=flavor_id,
+    key_name='demokey',
+    security_groups=[worker_group['name']],
+    userdata=userdata)
+
+# step-7

firstapp/source/scaling_out.rst

@@ -155,6 +155,13 @@ Go ahead and delete the existing instances and security groups you
 created in previous sections. Remember, when instances in the cloud
 are no longer working, remove them and re-create something new.
 
+.. only:: shade
+
+    .. literalinclude:: ../samples/shade/scaling_out.py
+        :language: python
+        :start-after: step-1
+        :end-before: step-2
+
 .. only:: libcloud
 
     .. literalinclude:: ../samples/libcloud/scaling_out.py
@@ -169,6 +176,13 @@ As you change the topology of your applications, you will need to
 update or create new security groups. Here, we will re-create the
 required security groups.
 
+.. only:: shade
+
+    .. literalinclude:: ../samples/shade/scaling_out.py
+        :language: python
+        :start-after: step-2
+        :end-before: step-3
+
 .. only:: libcloud
 
     .. literalinclude:: ../samples/libcloud/scaling_out.py
@@ -182,6 +196,13 @@ Define a short function to locate unused IPs or allocate a new floating
 IP. This saves a few lines of code and prevents you from
 reaching your Floating IP quota too quickly.
 
+.. only:: shade
+
+    .. literalinclude:: ../samples/shade/scaling_out.py
+        :language: python
+        :start-after: step-3
+        :end-before: step-4
+
 .. only:: libcloud
 
     .. literalinclude:: ../samples/libcloud/scaling_out.py
@@ -197,6 +218,13 @@ called :code:`app-services`. The database and messaging queue will be used
 to track the state of the fractals and to coordinate the communication
 between the services.
 
+.. only:: shade
+
+    .. literalinclude:: ../samples/shade/scaling_out.py
+        :language: python
+        :start-after: step-4
+        :end-before: step-5
+
 .. only:: libcloud
 
     .. literalinclude:: ../samples/libcloud/scaling_out.py
@@ -214,6 +242,13 @@ thousands of users trying to connect to our API to generate fractals.
 Armed with our security group, image and flavor size we can now add
 multiple API services:
 
+.. only:: shade
+
+    .. literalinclude:: ../samples/shade/scaling_out.py
+        :language: python
+        :start-after: step-5
+        :end-before: step-6
+
 .. only:: libcloud
 
     .. literalinclude:: ../samples/libcloud/scaling_out.py
@@ -242,6 +277,13 @@ Scaling the workers
 
 To increase the overall capacity, we will now add 3 workers:
 
+.. only:: shade
+
+    .. literalinclude:: ../samples/shade/scaling_out.py
+        :language: python
+        :start-after: step-6
+        :end-before: step-7
+
 .. only:: libcloud
 
     .. literalinclude:: ../samples/libcloud/scaling_out.py
@@ -398,6 +440,11 @@ and run the code as a single script.
 Before you run this script, confirm that you have set your authentication
 information, the flavor ID, and image ID.
 
+.. only:: shade
+
+    .. literalinclude:: ../samples/shade/scaling_out.py
+       :language: python
+
 .. only:: libcloud
 
     .. literalinclude:: ../samples/libcloud/scaling_out.py