Sean M. Collins c219133376 Add "Writing your First OpenStack Application" Guide
Written during a book sprint in Taipei, from March 30th 2015
to April 3rd 2015.

Co-Authored-By: Sean M. Collins <sean@coreitpro.com>
Co-Authored-By: Tom Fifield <tom@openstack.org>
Co-Authored-By: James Dempsey <jamesd@catalyst.net.nz>
Co-Authored-By: Nick Chase <nchase@mirantis.com>
Co-Authored-By: Christian Berendt <berendt@b1-systems.de>

Implements blueprint openstack-firstapp

Change-Id: I55ae32d0c04f641c818bda4714d9bc691a98e6b1
2015-04-21 09:15:26 +10:00

120 lines
3.4 KiB
Python

# step-1
from libcloud.compute.types import Provider
from libcloud.compute.providers import get_driver
auth_username = 'your_auth_username'
auth_password = 'your_auth_password'
auth_url = 'http://controller:5000'
project_name = 'your_project_name_or_id'
region_name = 'your_region_name'
provider = get_driver(Provider.OPENSTACK)
conn = provider(auth_username,
auth_password,
ex_force_auth_url=auth_url,
ex_force_auth_version='2.0_password',
ex_tenant_name=project_name,
ex_force_service_region=region_name)
# step-2
images = conn.list_images()
for image in images:
print(image)
# step-3
flavors = conn.list_sizes()
for flavor in flavors:
print(flavor)
# step-4
image_id = '2cccbea0-cea9-4f86-a3ed-065c652adda5'
image = conn.get_image(image_id)
print(image)
# step-5
flavor_id = '3'
flavor = conn.ex_get_size(flavor_id)
print(flavor)
# step-6
instance_name = 'testing'
testing_instance = conn.create_node(name=instance_name, image=image, size=flavor)
print(testing_instance)
# step-7
instances = conn.list_nodes()
for instance in instances:
print(instance)
# step-8
conn.destroy_node(testing_instance)
# step-9
print('Checking for existing SSH key pair...')
keypair_name = 'demokey'
pub_key_file = '~/.ssh/id_rsa.pub'
keypair_exists = False
for keypair in conn.list_key_pairs():
if keypair.name == keypair_name:
keypair_exists = True
if keypair_exists:
print('Keypair already exists. Skipping import.')
else:
print('adding keypair...')
conn.import_key_pair_from_file(keypair_name, pub_key_file)
for keypair in conn.list_key_pairs():
print(keypair)
# step-10
security_group_exists = False
for security_group in conn.ex_list_security_groups():
if security_group.name =='all-in-one':
all_in_one_security_group = security_group
security_group_exists = True
if security_group_exists:
print('Security Group already exists. Skipping creation.')
else:
all_in_one_security_group = conn.ex_create_security_group('all-in-one', 'network access for all-in-one application.')
conn.ex_create_security_group_rule(all_in_one_security_group, 'TCP', 80, 80)
conn.ex_create_security_group_rule(all_in_one_security_group, 'TCP', 22, 22)
# step-11
userdata = '''#!/usr/bin/env bash
curl -L -s https://git.openstack.org/cgit/stackforge/faafo/plain/contrib/install.sh | bash -s -- \
-i faafo -i messaging -r api -r worker -r demo
'''
# step-12
instance_name = 'all-in-one'
testing_instance = conn.create_node(name=instance_name,
image=image,
size=flavor,
ex_keyname=keypair_name,
ex_userdata=userdata,
ex_security_groups=[all_in_one_security_group])
conn.wait_until_running([testing_instance])
# step-13
print('Checking for unused Floating IP...')
unused_floating_ip = None
for floating_ip in conn.ex_list_floating_ips():
if floating_ip.node_id:
unused_floating_ip = floating_ip
break
if not unused_floating_ip:
pool = conn.ex_list_floating_ip_pools()[0]
print('Allocating new Floating IP from pool: {}'.format(pool))
unused_floating_ip = pool.create_floating_ip()
# step-14
conn.ex_attach_floating_ip_to_node(testing_instance, unused_floating_ip)
# step-15
print('The Fractals app will be deployed to http://%s' % unused_floating_ip.ip_address)