api_demo_create_instance.py

gistfile1.txt

#!/usr/bin/env python3
"""
Uses keystoneauth and the nova client api
to create an instance.

requires python3-openstackclient
"""

from os import environ as env
from novaclient import client as novaclient
from keystoneauth1 import loading
from keystoneauth1 import session

loader = loading.get_plugin_loader('password')
auth = loader.load_from_options(
    auth_url=env['OS_AUTH_URL'],
    username=env['OS_USERNAME'],
    password=env['OS_PASSWORD'],
    project_name=env['OS_PROJECT_NAME'],
    user_domain_name=env['OS_USER_DOMAIN_NAME'],
    project_domain_name=env['OS_PROJECT_DOMAIN_NAME'])

sess = session.Session(auth=auth)
nova = novaclient.Client(version='2', session=sess)

flavor = nova.flavors.find(name='m1.tiny')
# Note: I'm using the nova api to request network and image information
# instead of their own name.
network = nova.neutron.find_network('internal')
image = nova.glance.find_image('cirros')

if __name__ == '__main__':
    server = nova.servers.create(
        name='demo_instance',
        image=image.id,
        flavor=flavor.id,
        nics=[{
            'net-id': network.id
        }],
    )