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Cleans orphaned snapshots from an EC2 account. Requires boto config.
'''
@author Bommarito Consulting, LLC
@date 20120622
Identify and, if requested, remove orphaned snapshots from an EC2 account.
'''
# Imports
import boto
import re
import sys
def main():
'''
Main method
'''
if len(sys.argv) > 1 and sys.argv[1] == 'delete':
deleteSnapshots = True
else:
deleteSnapshots = False
# Open connection to EC2
ec2Connection = boto.connect_ec2()
# Get the list of registered AMIs.
imageIds, imageNames = zip(*[(image.id, image.name + ", " + image.description) for image in ec2Connection.get_all_images(owners=['self'])])
imageNames = dict(zip(imageIds, imageNames))
# Get list of snapshots and AMIs
reAmi = re.compile('ami-[^ ]+')
snapshots = []
snapshotsToDelete = []
snapshotsUnknown = []
imageSnapshots = {}
for snapshot in ec2Connection.get_all_snapshots(owner='self'):
# Get id and image ID via regex.
snapshotId = snapshot.id
snapshotImageId = reAmi.findall(snapshot.description)
if len(snapshotImageId) != 1:
snapshotsUnknown.append(snapshotId)
else:
snapshotImageId = snapshotImageId[0]
# Update lists
snapshots.append(snapshotId)
if snapshotImageId not in imageIds:
snapshotsToDelete.append(snapshotId)
else:
if snapshotImageId in imageSnapshots:
imageSnapshots[snapshotImageId].append(snapshotId)
else:
imageSnapshots[snapshotImageId] = [snapshotId]
print "Mapped snapshots:"
for image in sorted(imageSnapshots.keys()):
print image + ": " + imageNames[image]
for snapshot in imageSnapshots[image]:
print "\t- " + snapshot
print
print "Orphans: " + ','.join(sorted(snapshotsToDelete))
print
print "Unknown: " + ','.join(sorted(snapshotsUnknown))
if deleteSnapshots == True:
deleteConfirm = raw_input("Are you sure you want to delete the above orphan snapshots [y/n]? ")
if deleteConfirm == 'y':
for snapshot in snapshotsToDelete:
print 'Removing ' + snapshot + '...'
ec2Connection.delete_snapshot(snapshot)
# Close connection to EC2.
ec2Connection.close()
if __name__ == "__main__":
main()
@LiteWait

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@LiteWait LiteWait commented Sep 24, 2015

Nice, but you really should be checking that snapshot is not attached to a volume before deleting it as well.

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