def attach(self):
ec2 = niftycloud.connect_ec2()
if self.logical_volume_name:
# if a logical volume was specified, override the specified volume_id
# (if there was one) with the current AWS volume for the logical volume:
logical_volume = next(Volume.find(name=self.logical_volume_name))
self.volume_id = logical_volume._volume_id
volume = ec2.get_all_volumes([self.volume_id])[0]
# wait for the volume to be available. The volume may still be being created
# from a snapshot.
while volume.update() != 'available':
niftycloud.log.info('Volume %s not yet available. Current status = %s.' % (volume.id, volume.status))
time.sleep(5)
instance = ec2.get_only_instances([self.instance_id])[0]
attempt_attach = True
while attempt_attach:
try:
ec2.attach_volume(self.volume_id, self.instance_id, self.device)
attempt_attach = False
except EC2ResponseError as e:
if e.error_code != 'IncorrectState':
# if there's an EC2ResonseError with the code set to IncorrectState, delay a bit for ec2
# to realize the instance is running, then try again. Otherwise, raise the error:
niftycloud.log.info('Attempt to attach the EBS volume %s to this instance (%s) returned %s. Trying again in a bit.' % (self.volume_id, self.instance_id, e.errors))
time.sleep(2)
else:
raise e
niftycloud.log.info('Attached volume %s to instance %s as device %s' % (self.volume_id, self.instance_id, self.device))
# now wait for the volume device to appear
while not os.path.exists(self.device):
niftycloud.log.info('%s still does not exist, waiting 2 seconds' % self.device)
time.sleep(2)
def shutdown(self):
on_completion = self.sd.get('on_completion', 'shutdown')
if on_completion == 'shutdown':
if self.instance_id:
time.sleep(60)
c = niftycloud.connect_ec2()
c.terminate_instances([self.instance_id])
def main(self):
fp = StringIO.StringIO()
niftycloud.config.dump_safe(fp)
self.notify('%s (%s) Starting' % (self.name, self.instance_id), fp.getvalue())
if self.src and self.dst:
self.copy_keys()
if self.dst:
self.copy_log()
self.notify('%s (%s) Stopping' % (self.name, self.instance_id),
'Copy Operation Complete')
if niftycloud.config.getbool(self.name, 'exit_on_completion', True):
ec2 = niftycloud.connect_ec2()
ec2.terminate_instances([self.instance_id])
def do_start(self):
ami_id = self.sd.get('ami_id')
instance_type = self.sd.get('instance_type', 'm1.small')
security_group = self.sd.get('security_group', 'default')
if not ami_id:
self.parser.error('ami_id option is required when starting the service')
ec2 = niftycloud.connect_ec2()
if not self.sd.has_section('Credentials'):
self.sd.add_section('Credentials')
self.sd.set('Credentials', 'aws_access_key_id', ec2.aws_access_key_id)
self.sd.set('Credentials', 'aws_secret_access_key', ec2.aws_secret_access_key)
s = StringIO()
self.sd.write(s)
rs = ec2.get_all_images([ami_id])
img = rs[0]
r = img.run(user_data=s.getvalue(), key_name=self.options.keypair,
max_count=self.options.num_instances,
instance_type=instance_type,
security_groups=[security_group])
print('Starting AMI: %s' % ami_id)
print('Reservation %s contains the following instances:' % r.id)
for i in r.instances:
print('\t%s' % i.id)
def main():
try:
opts, args = getopt.getopt(sys.argv[1:], 'a:b:c:g:hi:k:m:n:o:rs:w',
['ami', 'bucket', 'class', 'group', 'help',
'inputqueue', 'keypair', 'module',
'numinstances', 'outputqueue',
'reload', 'script_name', 'wait'])
except:
usage()
params = {'module_name': None,
'script_name': None,
'class_name': None,
'script_bucket': None,
'group': 'default',
'keypair': None,
'ami': None,
'num_instances': 1,
'input_queue_name': None,
'output_queue_name': None}
reload = None
wait = None
for o, a in opts:
if o in ('-a', '--ami'):
params['ami'] = a
if o in ('-b', '--bucket'):
params['script_bucket'] = a
if o in ('-c', '--class'):
params['class_name'] = a
if o in ('-g', '--group'):
params['group'] = a
if o in ('-h', '--help'):
usage()
if o in ('-i', '--inputqueue'):
params['input_queue_name'] = a
if o in ('-k', '--keypair'):
params['keypair'] = a
if o in ('-m', '--module'):
params['module_name'] = a
if o in ('-n', '--num_instances'):
params['num_instances'] = int(a)
if o in ('-o', '--outputqueue'):
params['output_queue_name'] = a
if o in ('-r', '--reload'):
reload = True
if o in ('-s', '--script'):
params['script_name'] = a
if o in ('-w', '--wait'):
wait = True
# check required fields
required = ['ami']
for pname in required:
if not params.get(pname, None):
print('%s is required' % pname)
usage()
if params['script_name']:
# first copy the desired module file to S3 bucket
if reload:
print('Reloading module %s to S3' % params['script_name'])
else:
print('Copying module %s to S3' % params['script_name'])
l = imp.find_module(params['script_name'])
c = niftycloud.connect_s3()
bucket = c.get_bucket(params['script_bucket'])
key = bucket.new_key(params['script_name'] + '.py')
key.set_contents_from_file(l[0])
params['script_md5'] = key.md5
# we have everything we need, now build userdata string
l = []
for k, v in params.items():
if v:
l.append('%s=%s' % (k, v))
c = niftycloud.connect_ec2()
l.append('aws_access_key_id=%s' % c.aws_access_key_id)
l.append('aws_secret_access_key=%s' % c.aws_secret_access_key)
for kv in args:
l.append(kv)
s = '|'.join(l)
if not reload:
rs = c.get_all_images([params['ami']])
img = rs[0]
r = img.run(user_data=s, key_name=params['keypair'],
security_groups=[params['group']],
max_count=params.get('num_instances', 1))
print('AMI: %s - %s (Started)' % (params['ami'], img.location))
print('Reservation %s contains the following instances:' % r.id)
for i in r.instances:
print('\t%s' % i.id)
if wait:
running = False
while not running:
time.sleep(30)
[i.update() for i in r.instances]
status = [i.state for i in r.instances]
print(status)
if status.count('running') == len(r.instances):
running = True
for i in r.instances:
print('Instance: %s' % i.ami_launch_index)
print('Public DNS Name: %s' % i.public_dns_name)
print('Private DNS Name: %s' % i.private_dns_name)
