Python 2.7 获取使用云形成模板创建的EC2实例信息

我正在使用下面的云形成模板创建一个EC2实例。 将此模板命名为“dinesh.json”

{
  "AWSTemplateFormatVersion" : "2010-09-09",
  "Description" : "Dinesh template",
  "Resources" : {
    "MyEC2Instance" : {
      "Type" : "AWS::EC2::Instance",
      "Properties" : {
        "ImageId" : "ami-775e4f16",
        "InstanceType" : "t2.micro",
        "KeyName" : "****"
       }
    }
  }
}

现在，使用boto3库，我启动上面的模板

import boto3
cft = boto3.client('cloudformation')
create_cft = cft.create_stack(StackName="Dinesh",TemplateURL=r'https://s3-us-west-2.amazonaws.com/dsp-bucket/dinesh.json')
print create_cft

此操作已成功运行并获得如下输出：

{u'StackId': 'arn:aws:cloudformation:us-west-2:089691119308:stack/Dinesh/5b573240-548a-11e6-90a0-50a68a0bca36', 'ResponseMetadata': {'HTTPStatusCode': 200, 'RequestId': '5b507be9-548a-11e6-8405-55192e2be20a', 'HTTPHeaders': {'x-amzn-requestid': '5b507be9-548a-11e6-8405-55192e2be20a', 'date': 'Thu, 28 Jul 2016 06:13:09 GMT', 'content-length': '376', 'content-type': 'text/xml'}}}

现在，我想获取上面创建的EC2实例的信息，如公共IP、私有IP和其他信息

那么，有谁能建议我如何检索这个特定EC2实例的信息吗

---

请让我知道除了这两种方法之外，还有哪些方法可以做上述事情。

使用GetAtt函数。例如，如果您制作了一个名为bob的ec2，那么将其添加到输出部分将显示privateip

    "Outputs": {
        "AddressOfbob": {
            "Description": "Domainame",
            "Value": {
                            "Fn::GetAtt": [
                            "bob",
                            "PrivateIp"
                      ]

            }
        }
}

---

感谢@vorspring为我们指明了正确的方向。 除此之外，我还添加了一些描述性的答案

方法1

当云形成模板中存在“输出”部分时获取EC2实例信息

输出为

Create Stack o/p -  {u'StackId': 'arn:aws:cloudformation:us-west-2:089691119308:stack/Dinesh-1/a92318a0-54a7-11e6-b050-50d0184f2', 'ResponseMetadata': {'HTTPStatusCode': 200, 'RequestId': 'a91c023-54a7-11e6-ba43-67cc9d6ed45b', 'HTTPHeaders': {'x-amzn-requestid': 'a91c023-54a7-11e6-ba43-67cc9d6ed45b', 'date': 'Thu, 28 Jul 2016 09:42:55 GMT', 'content-length': '378', 'content-type': 'text/xml'}}}
Describe Stack o/p -  {u'Stacks': [{u'StackId': 'arn:aws:cloudformation:us-west-2:089691119308:stack/Dinesh-1/a92318a0-54a7-11e6-b050-50a0184f2', u'Description': 'Dinesh template', u'Tags': [], u'Outputs': [{u'Description': 'Private IP', u'OutputKey': 'PrivateIP', u'OutputValue': '172.3.28.221'}, {u'Description': 'Public IP', u'OutputKey': 'PublicIP', u'OutputValue': '52.5.203.173'}], u'CreationTime': datetime.datetime(2016, 7, 28, 9, 42, 55, 624000, tzinfo=tzutc()), u'StackName': 'Dinesh-1', u'NotificationARNs': [], u'StackStatus': 'CREATE_COMPLETE', u'DisableRollback': False}], 'ResponseMetadata': {'HTTPStatusCode': 200, 'RequestId': 'f19dc8ce-54a7-11e6-83e8-01451bce0ba', 'HTTPHeaders': {'x-amzn-requestid': 'f19dc8ce-54a7-11e6-83e8-01451b7ce0a', 'date': 'Thu, 28 Jul 2016 09:44:57 GMT', 'content-length': '1158', 'content-type': 'text/xml'}}}

{u'Reservations': [{u'OwnerId': '089691119308', u'ReservationId': 'r-7245ddb6', u'Groups': [], u'Instances': [{u'Monitoring': {u'State': 'disabled'}, u'PublicDnsName': 'ec2-52-42-17-44.us-west-2.compute.amazonaws.com', u'State': {u'Code': 16, u'Name': 'running'}, u'EbsOptimized': False, u'LaunchTime': datetime.datetime(2016, 7, 28, 9, 48, 37, tzinfo=tzutc()), u'PublicIpAddress': '52.42.10.44', u'PrivateIpAddress': '172.3.29.25', u'ProductCodes': [], u'VpcId': 'vpc-c60a2aa3', u'StateTransitionReason': '', u'InstanceId': 'i-059f15aa', u'ImageId': 'ami-775e4f16', u'PrivateDnsName': 'ip-172-31-29-25.us-west-2.compute.internal', u'KeyName': 'dsp', u'SecurityGroups': [{u'GroupName': 'default', u'GroupId': 'sg-53fdaa37'}], u'ClientToken': 'Dines-MyEC2-DJ1D05Q7A088', u'SubnetId': 'subnet-8d0136e8', u'InstanceType': 't2.micro', u'NetworkInterfaces': [{u'Status': 'in-use', u'MacAddress': '02:9f:ab:4a:3c:0b', u'SourceDestCheck': True, u'VpcId': 'vpc-c60a2aa3', u'Description': '', u'Association': {u'PublicIp': '52.42.170.44', u'PublicDnsName': 'ec2-52-42-170-44.us-west-2.compute.amazonaws.com', u'IpOwnerId': 'amazon'}, u'NetworkInterfaceId': 'eni-d5272ca8', u'PrivateIpAddresses': [{u'PrivateDnsName': 'ip-172-31-29-25.us-west-2.compute.internal', u'Association': {u'PublicIp': '52.42.170.44', u'PublicDnsName': 'ec2-52-42-170-44.us-west-2.compute.amazonaws.com', u'IpOwnerId': 'amazon'}, u'Primary': True, u'PrivateIpAddress': '172.31.29.25'}], u'PrivateDnsName': 'ip-172-31-29-25.us-west-2.compute.internal', u'Attachment': {u'Status': 'attached', u'DeviceIndex': 0, u'DeleteOnTermination': True, u'AttachmentId': 'eni-attach-f33c375f', u'AttachTime': datetime.datetime(2016, 7, 28, 9, 48, 37, tzinfo=tzutc())}, u'Groups': [{u'GroupName': 'default', u'GroupId': 'sg-53fdaa37'}], u'SubnetId': 'subnet-8d0136e8', u'OwnerId': '089691119308', u'PrivateIpAddress': '172.31.29.25'}], u'SourceDestCheck': True, u'Placement': {u'Tenancy': 'default', u'GroupName': '', u'AvailabilityZone': 'us-west-2b'}, u'Hypervisor': 'xen', u'BlockDeviceMappings': [{u'DeviceName': '/dev/sda1', u'Ebs': {u'Status': 'attached', u'DeleteOnTermination': True, u'VolumeId': 'vol-21bddea8', u'AttachTime': datetime.datetime(2016, 7, 28, 9, 48, 37, tzinfo=tzutc())}}], u'Architecture': 'x86_64', u'RootDeviceType': 'ebs', u'RootDeviceName': '/dev/sda1', u'VirtualizationType': 'hvm', u'Tags': [{u'Value': 'arn:aws:cloudformation:us-west-2:089691119308:stack/Dinesh-2/723ba810-54a8-11e6-9694-50a686be73f2', u'Key': 'aws:cloudformation:stack-id'}, {u'Value': 'MyEC2Instance', u'Key': 'aws:cloudformation:logical-id'}, {u'Value': 'Dinesh-2', u'Key': 'aws:cloudformation:stack-name'}], u'AmiLaunchIndex': 0}]}], 'ResponseMetadata': {'HTTPStatusCode': 200, 'RequestId': '8adf8956-0d5a-4d1f-a821-67fec4b5bbf9', 'HTTPHeaders': {'transfer-encoding': 'chunked', 'vary': 'Accept-Encoding', 'server': 'AmazonEC2', 'content-type': 'text/xml;charset=UTF-8', 'date': 'Thu, 28 Jul 2016 09:55:45 GMT'}}}

在描述_堆栈输出中，您将获得创建的EC2实例的公共IP和私有IP

方法2

在云形成模板中不存在“输出”部分时获取EC2实例信息

输出为

Create Stack o/p -  {u'StackId': 'arn:aws:cloudformation:us-west-2:089691119308:stack/Dinesh-2/7238154a8-11e6-9694-50a686be73f2', 'ResponseMetadata': {'HTTPStatusCode': 200, 'RequestId': '7234f160-54a8-11e6-bda6-ef311cece04b', 'HTTPHeaders': {'x-amzn-requestid': '7234f160-54a8-11e6-bda6-ef311cece04b', 'date': 'Thu, 28 Jul 2016 09:48:32 GMT', 'content-length': '378', 'content-type': 'text/xml'}}}
{'ResponseMetadata': {'HTTPStatusCode': 200, 'RequestId': 'baabaa79-54a8-11e6-90e7-9ba061bfa4c', 'HTTPHeaders': {'x-amzn-requestid': 'baabaa79-54a8-11e6-90e7-9bad061bf4c', 'date': 'Thu, 28 Jul 2016 09:50:33 GMT', 'content-length': '687', 'content-type': 'text/xml'}}, u'StackResourceSummaries': [{u'ResourceType': 'AWS::EC2::Instance', u'PhysicalResourceId': 'i-059f15aa', u'LastUpdatedTimestamp': datetime.datetime(2016, 7, 28, 9, 49, 23, 481000, tzinfo=tzutc()), u'ResourceStatus': 'CREATE_COMPLETE', u'LogicalResourceId': 'MyEC2Instance'}]}

从list_stack_resource的输出中，获取“PhysicalResourceId”，在本例中为“i-059f15aa”

然后获取ec2的descripe_实例的输出，以获取上面创建的ec2实例的完整信息

import boto3

ec2 = boto3.client('ec2')
ec2_resp = ec2.describe_instances(InstanceIds=['i-059f15aa'])
print ec2_resp

输出为

Create Stack o/p -  {u'StackId': 'arn:aws:cloudformation:us-west-2:089691119308:stack/Dinesh-1/a92318a0-54a7-11e6-b050-50d0184f2', 'ResponseMetadata': {'HTTPStatusCode': 200, 'RequestId': 'a91c023-54a7-11e6-ba43-67cc9d6ed45b', 'HTTPHeaders': {'x-amzn-requestid': 'a91c023-54a7-11e6-ba43-67cc9d6ed45b', 'date': 'Thu, 28 Jul 2016 09:42:55 GMT', 'content-length': '378', 'content-type': 'text/xml'}}}
Describe Stack o/p -  {u'Stacks': [{u'StackId': 'arn:aws:cloudformation:us-west-2:089691119308:stack/Dinesh-1/a92318a0-54a7-11e6-b050-50a0184f2', u'Description': 'Dinesh template', u'Tags': [], u'Outputs': [{u'Description': 'Private IP', u'OutputKey': 'PrivateIP', u'OutputValue': '172.3.28.221'}, {u'Description': 'Public IP', u'OutputKey': 'PublicIP', u'OutputValue': '52.5.203.173'}], u'CreationTime': datetime.datetime(2016, 7, 28, 9, 42, 55, 624000, tzinfo=tzutc()), u'StackName': 'Dinesh-1', u'NotificationARNs': [], u'StackStatus': 'CREATE_COMPLETE', u'DisableRollback': False}], 'ResponseMetadata': {'HTTPStatusCode': 200, 'RequestId': 'f19dc8ce-54a7-11e6-83e8-01451bce0ba', 'HTTPHeaders': {'x-amzn-requestid': 'f19dc8ce-54a7-11e6-83e8-01451b7ce0a', 'date': 'Thu, 28 Jul 2016 09:44:57 GMT', 'content-length': '1158', 'content-type': 'text/xml'}}}

{u'Reservations': [{u'OwnerId': '089691119308', u'ReservationId': 'r-7245ddb6', u'Groups': [], u'Instances': [{u'Monitoring': {u'State': 'disabled'}, u'PublicDnsName': 'ec2-52-42-17-44.us-west-2.compute.amazonaws.com', u'State': {u'Code': 16, u'Name': 'running'}, u'EbsOptimized': False, u'LaunchTime': datetime.datetime(2016, 7, 28, 9, 48, 37, tzinfo=tzutc()), u'PublicIpAddress': '52.42.10.44', u'PrivateIpAddress': '172.3.29.25', u'ProductCodes': [], u'VpcId': 'vpc-c60a2aa3', u'StateTransitionReason': '', u'InstanceId': 'i-059f15aa', u'ImageId': 'ami-775e4f16', u'PrivateDnsName': 'ip-172-31-29-25.us-west-2.compute.internal', u'KeyName': 'dsp', u'SecurityGroups': [{u'GroupName': 'default', u'GroupId': 'sg-53fdaa37'}], u'ClientToken': 'Dines-MyEC2-DJ1D05Q7A088', u'SubnetId': 'subnet-8d0136e8', u'InstanceType': 't2.micro', u'NetworkInterfaces': [{u'Status': 'in-use', u'MacAddress': '02:9f:ab:4a:3c:0b', u'SourceDestCheck': True, u'VpcId': 'vpc-c60a2aa3', u'Description': '', u'Association': {u'PublicIp': '52.42.170.44', u'PublicDnsName': 'ec2-52-42-170-44.us-west-2.compute.amazonaws.com', u'IpOwnerId': 'amazon'}, u'NetworkInterfaceId': 'eni-d5272ca8', u'PrivateIpAddresses': [{u'PrivateDnsName': 'ip-172-31-29-25.us-west-2.compute.internal', u'Association': {u'PublicIp': '52.42.170.44', u'PublicDnsName': 'ec2-52-42-170-44.us-west-2.compute.amazonaws.com', u'IpOwnerId': 'amazon'}, u'Primary': True, u'PrivateIpAddress': '172.31.29.25'}], u'PrivateDnsName': 'ip-172-31-29-25.us-west-2.compute.internal', u'Attachment': {u'Status': 'attached', u'DeviceIndex': 0, u'DeleteOnTermination': True, u'AttachmentId': 'eni-attach-f33c375f', u'AttachTime': datetime.datetime(2016, 7, 28, 9, 48, 37, tzinfo=tzutc())}, u'Groups': [{u'GroupName': 'default', u'GroupId': 'sg-53fdaa37'}], u'SubnetId': 'subnet-8d0136e8', u'OwnerId': '089691119308', u'PrivateIpAddress': '172.31.29.25'}], u'SourceDestCheck': True, u'Placement': {u'Tenancy': 'default', u'GroupName': '', u'AvailabilityZone': 'us-west-2b'}, u'Hypervisor': 'xen', u'BlockDeviceMappings': [{u'DeviceName': '/dev/sda1', u'Ebs': {u'Status': 'attached', u'DeleteOnTermination': True, u'VolumeId': 'vol-21bddea8', u'AttachTime': datetime.datetime(2016, 7, 28, 9, 48, 37, tzinfo=tzutc())}}], u'Architecture': 'x86_64', u'RootDeviceType': 'ebs', u'RootDeviceName': '/dev/sda1', u'VirtualizationType': 'hvm', u'Tags': [{u'Value': 'arn:aws:cloudformation:us-west-2:089691119308:stack/Dinesh-2/723ba810-54a8-11e6-9694-50a686be73f2', u'Key': 'aws:cloudformation:stack-id'}, {u'Value': 'MyEC2Instance', u'Key': 'aws:cloudformation:logical-id'}, {u'Value': 'Dinesh-2', u'Key': 'aws:cloudformation:stack-name'}], u'AmiLaunchIndex': 0}]}], 'ResponseMetadata': {'HTTPStatusCode': 200, 'RequestId': '8adf8956-0d5a-4d1f-a821-67fec4b5bbf9', 'HTTPHeaders': {'transfer-encoding': 'chunked', 'vary': 'Accept-Encoding', 'server': 'AmazonEC2', 'content-type': 'text/xml;charset=UTF-8', 'date': 'Thu, 28 Jul 2016 09:55:45 GMT'}}}

---

谢谢@vorspung。有了这一点，我再添加一个答案，将使用boto3。