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

感谢朋友支持本博客，欢迎共同探讨交流，由于能力和时间有限，错误之处在所难免，欢迎指正！

如果转载，请保留作者信息。

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