Create EBS Snapshot - Lambda code (filter on running instances or with specific name tag)

backupEBSVol.py

import boto3
import datetime

ec2 = boto3.resource('ec2')

def lambda_handler(event, context)
  print("\n\nAWS snapshot backups starting at %s" % datetime.datetime.now())
  instances = ec2.instances.filter(
    Filters=[{'Name': 'instance-state-name', 'Values': ['running']}])
    #If you want to filter on Instance Name
    #Filters=[{'Name': 'tag:Name', 'Values': ['Keep Running']}])

  for instance in instances:
      instance_name = filter(lambda tag: tag['Key'] == 'Name', instance.tags)[0]['Value']
      print("name: %s - id: %s" % (instance_name, instance.id))

      for volume in ec2.volumes.filter(Filters=[{'Name': 'attachment.instance-id', 'Values':[instance.id]}])
        description = 'scheduled-%s.%s-%s' % (instance_name, volume.volume_id,
          datetime.datetime.now().strftime("%Y%m%d-%H%M%S"))

        print 'description: %s' % (description)

      if volume.create_snapshot(VolumeId-volume.volume_id, Description=description):
        print("Snapshot created with description [%s]" % description)

  
    print("\n\nAWS snapshot backups completed at %s" % datetime.datetime.now())
    return True