snapshot_ebs_volumes_lambda_task.py

""" Make sure to create the "backup" tag on the volumes you want to backup.
    For authentication, setup the aws policy and user as specified in the snapshot-trust.json and snapshot-policy.json
    Inspired by: https://serverlesscode.com/post/lambda-schedule-ebs-snapshot-backups/
"""

from time import gmtime, strftime
import boto3

region = "us-west-2"
backup_tag = "backup"

client = boto3.client('ec2', region_name=region)

def lambda_handler(event, context):
    volumes = client.describe_volumes(Filters=[{"Name":"tag-key", "Values":[backup_tag]}])
    for volume in volumes["Volumes"]:
        time = strftime("%a, %d %b %Y %X +0000", gmtime())
        snapshot = ec2.create_snapshot(VolumeId=volume["VolumeId"], Description='EBS Backup {0}'.format(time))
        print "Created : {0} ID: {1}".format(snapshot.description, snapshot.snapshot_id)