AWS Boto-如何创建实例并返回instance_id [英] aws boto - how to create instance and return instance_id
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问题描述
我想创建一个python脚本,可以在其中传递参数/输入以指定实例类型,然后再附加一个额外的EBS(如果需要).
I want to create a python script where I can pass arguments/inputs to specify instance type and later attach an extra EBS (if needed).
ec2 = boto3.resource('ec2','us-east-1')
hddSize = input('Enter HDD Size if you want extra space ')
instType = input('Enter the instance type ')
def createInstance():
ec2.create_instances(
ImageId=AMI,
InstanceType = instType,
SubnetId='subnet-31d3ad3',
DisableApiTermination=True,
SecurityGroupIds=['sg-sa4q36fc'],
KeyName='key'
)
return instanceID; ## I know this does nothing
def createEBS():
ebsVol = ec2.Volume(
id = instanceID,
volume_type = 'gp2',
size = hddSize
)
现在,ec2.create_instances()可以返回ID还是我必须进行一次保留迭代?
Now, can ec2.create_instances() return ID or do I have to do an iteration of reservations?
还是执行ec2.create(instance_id)/返回instance_id?这里的文档尚不明确.
or do I do an ec2.create(instance_id) / return instance_id? The documentation isn't specifically clear here.
推荐答案
在boto3中,create_instances返回一个列表,以便获取在请求中创建的实例ID,如下工作:
in boto3, create_instances returns a list so to get instance id that was created in the request, following works:
ec2_client = boto3.resource('ec2','us-east-1')
response = ec2_client.create_instances(ImageId='ami-12345', MinCount=1, MaxCount=1)
instance_id = response[0].instance_id
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