def check_snapshots (ec2, opts):
print "Checking snapshots exist..."
instances = utils.get_instance_objs(ec2, opts, filterDict={'tag:AutoSnapshot': 'Yes'})
if instances == None:
return None
# Create list of all volumes attached to instances which are flagged as needing snapshots
for instance in instances:
vols_to_snapshot = []
block_map = instance.block_device_mapping
for _, block_obj in block_map.iteritems():
if block_obj.volume_id not in vols_to_snapshot:
vols_to_snapshot.append(block_obj.volume_id)
# Create a list of all snapshots that exist
all_snapshots = ec2.get_all_snapshots(owner='self')
snapshot_volume_ids = []
for snapshot in all_snapshots:
if snapshot.volume_id not in snapshot_volume_ids:
snapshot_volume_ids.append(snapshot.volume_id)
if vols_to_snapshot:
# Compare the two lists
error_count = 0
for vol in vols_to_snapshot:
if vol not in snapshot_volume_ids:
error_count += 1
print "Error: Volume %s appears to have no snapshot for it !" % vol
if error_count == 0:
print 'All volumes have snapshots that should'
else:
print "No volumes seem to have snapshots in this region"
def take_snapshots (ec2, opts):
instances = utils.get_instance_objs(ec2, opts, filterDict={'tag:AutoSnapshot': 'Yes'}) # We only snapshot a volume if the instance is tagged as such
if instances == None:
return None
print "Taking snapshots of volumes for matching machines that are tagged with 'AutoSnapshot' = 'Yes'"
volume_id_list = []
for instance in instances:
for _, device in instance.block_device_mapping.iteritems():
volume_id_list.append(device.volume_id) # Gather a list of volume ids for volumes attached to such tagged instances
volume_objs = ec2.get_all_volumes(volume_ids=volume_id_list) # Get a list of all volume objects that match our list of ids
for volume_obj in volume_objs:
print "Creating snapshot for %s" % volume_obj.id
description_string = "Automatic %s triggered snapshot of [%s]" % (opts['snapshot_identifier'], volume_obj.id)
if 'Name' in volume_obj.tags:
description_string += ' for %s' % (volume_obj.tags['Name'])
volume_obj.create_snapshot(description_string)
