《openstack-nova》use-novaclient 创建虚拟机（createvms.py）

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博客地址：http://blog.csdn.net/qq_21398167

原博文地址：http://blog.csdn.net/qq_21398167/article/details/46531193

import sys

import time
import keystoneclient.v2_0.client as keystoneclient
import novaclient.v1_1.client as novaclient
import neutronclient.v2_0.client as neutronclient
from credentials import *

'''
     Creates a network and a COUNT of instances
     using the user / project configured in stackrc file
'''

INSTANCE_NAME = 'fiva'
NETWORK_NAME='route-66'
SUBNET_CIDR='10.2.33.0/24'
INSTANCE_COUNT = 3

kcreds = get_keystone_creds()

print "Connecting to keystone"
keystone = keystoneclient.Client(**kcreds)
tokenlen=len(keystone.auth_token)
print keystone.auth_token[0:20] + "..." + keystone.auth_token[tokenlen-20:tokenlen]

ncreds = get_nova_creds()
nova = novaclient.Client(**ncreds)

flavors = nova.flavors.list(is_public=True)
print flavors

images = nova.images.list(detailed=False)
print images

# get networks from quantum
print "Find or create network..."
network_url = keystone.service_catalog.url_for(service_type='network')
neutron = neutronclient.Client(endpoint_url=network_url, token=keystone.auth_token)
networks = neutron.list_networks()['networks']
print "Networks: "
print [(nw['name'],nw['id'])for nw in networks]

net = None
net_id = None
networks = neutron.list_networks(name=NETWORK_NAME)['networks']
if len(networks)>0 and networks[0]['name'] == NETWORK_NAME :
     net_id = networks[0]['id']
     print "Network found ", NETWORK_NAME, net_id
else:
     net = neutron.create_network({'network':
               {'name': NETWORK_NAME,'admin_state_up': True} })
     print "Created network ", net
     net_id = net['network']['id']
     sub = neutron.create_subnet({'subnet': {
               'name': 'subnet',
               'network_id': net_id,
               'ip_version': 4,
               'cidr': SUBNET_CIDR
               }
           })
     print "Created subnet ", sub

print "List instances: "
# check what we get so far for instances
instances = nova.servers.list()

for instance in instances:
     print 'name: ', instance.name
     print 'host id: ', instance.hostId

print "Creating instances: "
instance = nova.servers.create(INSTANCE_NAME, images[0], flavors[0]
                 # The actual number will be based on the quota.
                 # see http://www.gossamer-threads.com/lists/openstack/dev/17629
                 ,min_count=1, max_count=INSTANCE_COUNT
                 # if nics not specified, will connect to all project networks
                 ,nics=[{'net-id': net_id}]
           )

# Poll at 5 second intervals, until the status is no longer 'BUILD'
status = instance.status
sys.stdout.write('Building...')
while status == 'BUILD':
     time.sleep(1)
     sys.stdout.write(".")
     sys.stdout.flush()
     # Retrieve the instance again so the status field updates
     instance = nova.servers.get(instance.id)
     status = instance.status

print "status: %s" % status

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