def create_resources():
print(f"Creating {u.get_prefix()} resources in region {u.get_region()}")
vpc, security_group = network_setup()
keypair_setup() # saves private key locally to keypair_fn
# create EFS
efss = u.get_efs_dict()
efs_name = u.get_efs_name()
efs_id = efss.get(efs_name, '')
if not efs_id:
print("Creating EFS " + efs_name)
efs_id = u.create_efs(efs_name)
else:
print("Reusing EFS " + efs_name)
efs_client = u.get_efs_client()
# create mount target for each subnet in the VPC
# added retries because efs is not immediately available
max_failures = 10
retry_interval_sec = 1
for subnet in vpc.subnets.all():
for retry_attempt in range(max_failures):
try:
sys.stdout.write("Creating efs mount target for %s ... " %
(subnet.availability_zone, ))
sys.stdout.flush()
response = efs_client.create_mount_target(
FileSystemId=efs_id,
SubnetId=subnet.id,
SecurityGroups=[security_group.id])
if u.is_good_response(response):
print("success")
break
except Exception as e:
if 'already exists' in str(
e): # ignore "already exists" errors
print('already exists')
break
# Takes couple of seconds for EFS to come online, with
# errors like this:
# Creating efs mount target for us-east-1f ... Failed with An error occurred (IncorrectFileSystemLifeCycleState) when calling the CreateMountTarget operation: None, retrying in 1 sec
print("Got %s, retrying in %s sec" %
(str(e), retry_interval_sec))
time.sleep(retry_interval_sec)
else:
print("Giving up.")
def delete_efs():
efss = u.get_efs_dict()
efs_id = efss.get(EFS_NAME, '')
efs_client = u.get_efs_client()
if efs_id:
try:
# delete mount targets first
print("About to delete %s (%s)" % (efs_id, EFS_NAME))
response = efs_client.describe_mount_targets(FileSystemId=efs_id)
assert u.is_good_response(response)
for mount_response in response['MountTargets']:
id_ = mount_response['MountTargetId']
sys.stdout.write('Deleting mount target %s ... ' % (id_, ))
sys.stdout.flush()
response = efs_client.delete_mount_target(MountTargetId=id_)
print(response_type(response))
sys.stdout.write('Deleting EFS %s (%s)... ' % (efs_id, EFS_NAME))
sys.stdout.flush()
u.delete_efs_by_id(efs_id)
except Exception as e:
sys.stdout.write(f'failed with {e}\n')
util.log_error(str(e) + '\n')