AWS API and Python Boto

Quick note on connection to EC2 to list instances.

– Ensure IAM User permissions. In my case I tried EC2FullAccess.
– Ensure you have your access and secret key handy.
– This example just cycle through regions and list any instances.

1
import argparse
2
import boto.ec2
3

4
access_key = ''
5
secret_key = ''
6

7
def get_ec2_instances(region):
8
    ec2_conn = boto.ec2.connect_to_region(region,
9
                aws_access_key_id=access_key,
10
                aws_secret_access_key=secret_key)
11
    reservations = ec2_conn.get_all_reservations()
12
    for reservation in reservations:
13
        print region+':',reservation.instances
14

15
    for vol in ec2_conn.get_all_volumes():
16
        print region+':',vol.id
17

18
def main():
19
    regions = ['us-east-1','us-west-1','us-west-2','eu-west-1','sa-east-1',
20
                'ap-southeast-1','ap-southeast-2','ap-northeast-1']
21
    parser = argparse.ArgumentParser()
22
    parser.add_argument('access_key', help='Access Key');
23
    parser.add_argument('secret_key', help='Secret Key');
24
    args = parser.parse_args()
25
    global access_key
26
    global secret_key
27
    access_key = args.access_key
28
    secret_key = args.secret_key
29

30
    for region in regions: get_ec2_instances(region)
31

32
if __name__ =='__main__':main()

Example:

$ python list.py myaccess_key mysecret_key
us-east-1: [Instance:i-1aac5699]
us-east-1: vol-d121290e