diff --git a/conf/ucloud.conf b/conf/ucloud.conf
index 7f83d80..0ebb705 100644
--- a/conf/ucloud.conf
+++ b/conf/ucloud.conf
@@ -1,8 +1,14 @@
 # This section contains default values for all other sections
 [DEFAULT]
 
+AUTH_NAME = "replace me"
+AUTH_SEED = "replace me"
+AUTH_REALM = "replace me"
+
 NETWORK_PREFIX = moo
 
+OTP_VERIFY_ENDPOINT = verify/
+
 [api]
 NETWORK_PREFIX = foo
 
diff --git a/ucloud/api/common_fields.py b/ucloud/api/common_fields.py
index e9903ac..1ceb1b0 100755
--- a/ucloud/api/common_fields.py
+++ b/ucloud/api/common_fields.py
@@ -1,7 +1,6 @@
 import os
 
-from ucloud.config import etcd_client, env_vars
-
+from ucloud.config import etcd_client, config
 
 class Optional:
     pass
@@ -48,6 +47,6 @@ class VmUUIDField(Field):
         self.validation = self.vm_uuid_validation
 
     def vm_uuid_validation(self):
-        r = etcd_client.get(os.path.join(env_vars.get('VM_PREFIX'), self.uuid))
+        r = etcd_client.get(os.path.join(config['api']['VM_PREFIX'], self.uuid))
         if not r:
             self.add_error("VM with uuid {} does not exists".format(self.uuid))
diff --git a/ucloud/api/helper.py b/ucloud/api/helper.py
index 63d2f90..6735f05 100755
--- a/ucloud/api/helper.py
+++ b/ucloud/api/helper.py
@@ -7,15 +7,15 @@ import requests
 
 from pyotp import TOTP
 
-from ucloud.config import vm_pool, env_vars
+from ucloud.config import vm_pool, config
 
 
 def check_otp(name, realm, token):
     try:
         data = {
-            "auth_name": env_vars.get("AUTH_NAME"),
-            "auth_token": TOTP(env_vars.get("AUTH_SEED")).now(),
-            "auth_realm": env_vars.get("AUTH_REALM"),
+            "auth_name": config['api']["AUTH_NAME"],
+            "auth_token": TOTP(config['api']["AUTH_SEED"]).now(),
+            "auth_realm": config['api']["AUTH_REALM"],
             "name": name,
             "realm": realm,
             "token": token,
@@ -25,8 +25,8 @@ def check_otp(name, realm, token):
 
     response = requests.post(
         "{OTP_SERVER}{OTP_VERIFY_ENDPOINT}".format(
-            OTP_SERVER=env_vars.get("OTP_SERVER", ""),
-            OTP_VERIFY_ENDPOINT=env_vars.get("OTP_VERIFY_ENDPOINT", "verify/"),
+            OTP_SERVER=config['api']["OTP_SERVER"],
+            OTP_VERIFY_ENDPOINT=config['api']["OTP_VERIFY_ENDPOINT"]
         ),
         json=data,
     )
@@ -35,7 +35,7 @@ def check_otp(name, realm, token):
 
 def resolve_vm_name(name, owner):
     """Return UUID of Virtual Machine of name == name and owner == owner
-    
+
     Input: name of vm, owner of vm.
     Output: uuid of vm if found otherwise None
     """
@@ -54,7 +54,7 @@ def resolve_vm_name(name, owner):
 
 def resolve_image_name(name, etcd_client):
     """Return image uuid given its name and its store
-       
+
        * If the provided name is not in correct format
          i.e {store_name}:{image_name} return ValueError
        * If no such image found then return KeyError
@@ -70,9 +70,9 @@ def resolve_image_name(name, etcd_client):
         """
         Examples, where it would work and where it would raise exception
         "images:alpine" --> ["images", "alpine"]
-        
+
         "images" --> ["images"] it would raise Exception as non enough value to unpack
-        
+
         "images:alpine:meow" --> ["images", "alpine", "meow"] it would raise Exception
                                                               as too many values to unpack
         """
@@ -80,7 +80,7 @@ def resolve_image_name(name, etcd_client):
     except Exception:
         raise ValueError("Image name not in correct format i.e {store_name}:{image_name}")
 
-    images = etcd_client.get_prefix(env_vars.get('IMAGE_PREFIX'), value_in_json=True)
+    images = etcd_client.get_prefix(config['api']['IMAGE_PREFIX'], value_in_json=True)
 
     # Try to find image with name == image_name and store_name == store_name
     try:
@@ -119,14 +119,14 @@ def generate_mac(uaa=False, multicast=False, oui=None, separator=':', byte_fmt='
 def get_ip_addr(mac_address, device):
     """Return IP address of a device provided its mac address / link local address
        and the device with which it is connected.
-       
+
        For Example, if we call get_ip_addr(mac_address="52:54:00:12:34:56", device="br0")
        the following two scenarios can happen
        1. It would return None if we can't be able to find device whose mac_address is equal
           to the arg:mac_address or the mentioned arg:device does not exists or the ip address
           we found is local.
        2. It would return ip_address of device whose mac_address is equal to arg:mac_address
-          and is connected/neighbor of arg:device       
+          and is connected/neighbor of arg:device
     """
     try:
         output = sp.check_output(['ip', '-6', 'neigh', 'show', 'dev', device], stderr=sp.PIPE)