AWS Lambda boto3 : Instance launch from lambda boto3 python eroor

Question

while trying launch instance from python function instance not launching but not getting python syntax error.

import boto3

ec2 = boto3.resource('ec2', region_name='us-east-2')

def lambda_handler(event, context):
    images = ec2.images.filter(
        Filters=[
            {
                'Name': 'description',
                'Values': [
                    'lambdaami',
                ]
            },
        ],
        Owners=[
            'self'
        ])

    amis = sorted(images, key=lambda x: x['CreationDate'], reverse=True)
    print amis[0]['ImageId']
    INSTANCE = ec2.create_instance(ImageId='ImageId', InstanceType='t2.micro', MinCount=1, MaxCount=1)
    print(INSTANCE[0].id)

Kindly help.....

What error, specifically do you see? Did you import boto3? — Anon Coward
– Anon Coward, Commented Sep 22, 2019 at 4:21
Yes import boto3 Error on lambda errorType": "AttributeError", "errorMessage": "'ec2.ServiceResource' object has no attribute 'create_instance — CloudNinja
– CloudNinja, Commented Sep 22, 2019 at 4:25
Then you've not posted a complete code example. Any answer will likely be a guess. — Anon Coward
– Anon Coward, Commented Sep 22, 2019 at 4:26
Try just running EC2 instance from Boto3, after getting a connection, proceed with next steps. — Lakshya Srivastava
– Lakshya Srivastava, Commented Sep 22, 2019 at 4:45

Daeho Ro · Accepted Answer · 2019-09-22 06:08:22Z

2

You have defined ec2 twice,

ec2 = boto3.client('ec2')
ec2 = boto3.resource('ec2')
client = boto3.client('ec2')

and even again for client. Please use only one client or resource. Furthermore, there is no create_instance and it seems a typo of a function create_instances for resource.

Here is an example:

import boto3

ec2 = boto3.resource('ec2', region_name='us-east-2')

def lambda_handler(event, context):
    images = ec2.images.filter(
        Filters=[
            {
                'Name': 'description',
                'Values': [
                    'lambdaami',
                ]
            },
        ],
        Owners=[
            'self'
        ])

    AMI = sorted(images, key=lambda x: x.creation_date, reverse=True)
    IMAGEID = AMI[0].image_id

    INSTANCE = ec2.create_instances(ImageId=IMAGEID, InstanceType='t2.micro', MinCount=1, MaxCount=1)
    print(INSTANCE[0].image_id)

To make an image from an instance and wait for that,

import boto3
import time

ec2 = boto3.resource('ec2', region_name='us-east-2')

def lambda_handler(event, context):
    instanceId = 'What instance id you want to create an image'

    response = ec2.Instance(instanceId).create_image(Name='Image Name')
    imageId = response.image_id

    while(ec2.Image(imageId).state != 'available'):
        time.sleep(5) # Wait for 5 seconds for each try.

    # Since we know the imageId, no needs for other codes

    instance = ec2.create_instances(ImageId=imageId, InstanceType='t2.micro', MinCount=1, MaxCount=1)
    print(instance[0].image_id)

edited Sep 22, 2019 at 6:08

answered Sep 22, 2019 at 4:52

Daeho Ro

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15 Comments

CloudNinja Over a year ago

import boto3 import json region = 'us-east-2' ec2 = boto3.client('ec2') def lambda_handler(event, context):      response = ec2.describe_images(     Filters=[         {             'Name': 'description',             'Values': [                 'lambdaami',             ]         },     ],     Owners=[         'self'     ] )      amis = sorted(response['Images'], key=lambda x: x['CreationDate'], reverse=True)      print amis[0]['ImageId']      INSTANCE = ec2.create_instance(ImageId='ImageId', InstanceType='t2.micro', MinCount=1, MaxCount=1)      print (INSTANCE[0].id)

CloudNinja Over a year ago

^^ Output

Response: {   "stackTrace": [     [       "/var/task/lambda_function.py",       21,       "lambda_handler",       "print amis[0]['ImageId']"     ]   ],   "errorType": "IndexError",   "errorMessage": "list index out of range

Daeho Ro Over a year ago

Please do not include your code as a comment but just modify your answer. And I modified my answer several times, please check it again.

Daeho Ro Over a year ago

Btw, what is the 'ImageId'? You didn't defined.

CloudNinja Over a year ago

Now its working for me now. INSTANCE = ec2.create_instances(ImageId=IMAGEID, InstanceType='t2.micro', MinCount=1, MaxCount=1) Thanks a lot.

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