allow ucloud-api to also be able work without ceph i.e use filesystem

config.py

@@ -1,4 +1,17 @@
+import logging
+
 from etcd3_wrapper import Etcd3Wrapper
 from decouple import config
 
+logging.basicConfig(
+    level=logging.DEBUG,
+    filename="log.txt",
+    filemode="a",
+    format="%(asctime)s: %(levelname)s - %(message)s",
+    datefmt="%d-%b-%y %H:%M:%S",
+)
+
+
+WITHOUT_CEPH = config("WITHOUT_CEPH", False, cast=bool)
+
 etcd_client = Etcd3Wrapper(host=config("ETCD_URL"))