使用boto3启动AWS EC2实例时指定VirtualizationType

Question

有人知道使用boto3启动AWS EC2实例时如何设置VirtualizationType吗？ 我尝试过

session = boto3.session.Session(
            aws_access_key_id=self.access_key_id,
            aws_secret_access_key=self.secret_access_key,
            region_name=self.region)
ec2resource = session.resource('ec2')
ec2resource.create_instances(
            ImageId=ami_id, MinCount=1, MaxCount=count, KeyName=key_name,
            InstanceType=type, SecurityGroups=security_groups, 
            VirtualizationType='paravirtual')

但是得到了

[2016-01-15 10:54:18 CST] INFO Calling ec2:run_instances with {'VirtualizationType': 'paravirtual', 'KeyName': 'common', 'SecurityGroups': ['default'], 'MaxCount': 2, 'MinCount': 1, 'InstanceType': 'm1.small', 'ImageId': 'ami-d05e75b8'}
Traceback (most recent call last):
  File "suites/ec2.py", line 21, in <module>
    print ec2.launch(count=2, VirtualizationType='paravirtual')
  File "/Users/bchung/Dropbox/PycharmProjects/perf/lib/aws/ec2.py", line 183, in launch
    InstanceType=type, SecurityGroups=security_groups, **kwargs)
  File "/Library/Python/2.7/site-packages/boto3/resources/factory.py", line 455, in do_action
    response = action(self, *args, **kwargs)
  File "/Library/Python/2.7/site-packages/boto3/resources/action.py", line 79, in __call__
    response = getattr(parent.meta.client, operation_name)(**params)
  File "/Library/Python/2.7/site-packages/botocore/client.py", line 310, in _api_call
    return self._make_api_call(operation_name, kwargs)
  File "/Library/Python/2.7/site-packages/botocore/client.py", line 383, in _make_api_call
    api_params, operation_model, context=request_context)
  File "/Library/Python/2.7/site-packages/botocore/client.py", line 425, in _convert_to_request_dict
    api_params, operation_model)
  File "/Library/Python/2.7/site-packages/botocore/validate.py", line 273, in serialize_to_request
    raise ParamValidationError(report=report.generate_report())
botocore.exceptions.ParamValidationError: 
    Parameter validation failed:
    Unknown parameter in input: "VirtualizationType", must be one of: 
    DryRun, ImageId, MinCount, MaxCount, KeyName, SecurityGroups, 
    SecurityGroupIds, UserData, InstanceType, Placement, KernelId,
    RamdiskId, BlockDeviceMappings, Monitoring, SubnetId, 
    DisableApiTermination, InstanceInitiatedShutdownBehavior, 
    PrivateIpAddress, ClientToken, AdditionalInfo, NetworkInterfaces, 
    IamInstanceProfile, EbsOptimized

我需要设置VirtualizationType，因为我需要一些仅允许准虚拟而不是hvm的旧实例类型（m1.small），并且似乎boto3默认使用hvm ：

Traceback (most recent call last):
  File "suites/ec2.py", line 21, in <module>
    print ec2.launch(count=2)
  File "/Users/bchung/Dropbox/PycharmProjects/perf/lib/aws/ec2.py", line 183, in launch
    InstanceType=type, SecurityGroups=security_groups, **kwargs)
  File "/Library/Python/2.7/site-packages/boto3/resources/factory.py", line 455, in do_action
    response = action(self, *args, **kwargs)
  File "/Library/Python/2.7/site-packages/boto3/resources/action.py", line 79, in __call__
    response = getattr(parent.meta.client, operation_name)(**params)
  File "/Library/Python/2.7/site-packages/botocore/client.py", line 310, in _api_call
    return self._make_api_call(operation_name, kwargs)
  File "/Library/Python/2.7/site-packages/botocore/client.py", line 396, in _make_api_call
    raise ClientError(parsed_response, operation_name)
botocore.exceptions.ClientError: An error occurred 
(InvalidParameterCombination) when calling the RunInstances operation:
 Non-Windows instances with a virtualization type of 'hvm' are currently not supported for this instance type.

我检查过： http : //boto3.readthedocs.org/en/latest/reference/services/ec2.html#EC2.ServiceResource.create_instances和http://boto3.readthedocs.org/en/latest/reference/services/ec2 .html＃EC2.Client.run_instances

并且params中没有VirtualizationType ，所以我想知道是否有设置方法，或者因为将要弃用它，所以boto3只是不允许指定它？

欢迎任何提示或建议，并在此先感谢！

Answer 1

无法从HVM AMI映像启动半虚拟EC2实例。 这不仅是boto3的事情，而且是AWS的限制。 准虚拟EC2实例只能从准虚拟AMI启动。

这是因为与HVM EC2实例相比，PV EC2实例的启动方式不同。

为了启动Linux m1.small实例，您需要找到和/或创建一个准虚拟AMI映像。