def __launch_ec2_queue_head(self, parameters):
logging.info('About to start an EC2 queue head...')
parameters["queue_head"] = True
requested_key_name = parameters["keyname"]
# get the largest instance_type and let it to be queue head
head_node = parameters['head_node']
parameters["instance_type"] = head_node["instance_type"]
parameters["num_vms"] = 1
parameters["shutdown"] = "terminate"
num_vms = 1
# Tag queue head key so that it can be differentiated if necessary
parameters["keyname"] = AgentConfig.get_queue_head_keyname(
agent_type=self.agent_type, keyname=requested_key_name)
logging.info('New queue head keyname: {0}'.format(
parameters["keyname"]))
self.agent.configure_instance_security(parameters)
try:
self.agent.prepare_instances(parameters)
except Exception as e:
raise Exception('Errors in running instances in agent: ' + str(e))
del parameters['head_node']
return num_vms
def __launch_ec2_queue_head(self, parameters):
logging.info("About to start an EC2 queue head...")
parameters["queue_head"] = True
requested_key_name = parameters["keyname"]
# get the largest instance_type and let it to be queue head
head_node = parameters["head_node"]
parameters["instance_type"] = head_node["instance_type"]
parameters["num_vms"] = 1
parameters["shutdown"] = "terminate"
num_vms = 1
# Tag queue head key so that it can be differentiated if necessary
parameters["keyname"] = AgentConfig.get_queue_head_keyname(
agent_type=self.agent_type, keyname=requested_key_name
)
logging.info("New queue head keyname: {0}".format(parameters["keyname"]))
self.agent.configure_instance_security(parameters)
try:
self.agent.prepare_instances(parameters)
except Exception as e:
raise Exception("Errors in running instances in agent: " + str(e))
del parameters["head_node"]
return num_vms
