diff --git a/rndc.conf b/rndc.conf
new file mode 100644
index 0000000..ad31f18
--- /dev/null
+++ b/rndc.conf
@@ -0,0 +1,7 @@
+include "rndc.key";
+
+options {
+    default-key "rndc-key";
+    default-server 127.0.0.1;
+    default-port 953;
+};
diff --git a/script/settings.py b/script/settings.py
index 204ce47..8d35916 100755
--- a/script/settings.py
+++ b/script/settings.py
@@ -47,7 +47,7 @@
 
 zones_path = os.path.join(named_path, 'zones')
 
-system = platform.dist()[0]
+system = platform.freedesktop_os_release()['VENDOR_NAME']
 if system == 'centos':
     user = 'named'
     sysconf = '/etc/sysconfig/named'
diff --git a/script/setup.py b/script/setup.py
index 2845f38..13bb7d0 100755
--- a/script/setup.py
+++ b/script/setup.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 #-*- coding: utf-8 -*-
 
 # vim: tabstop=4 shiftwidth=4 softtabstop=4
diff --git a/script/syndns.py b/script/syndns.py
index f4a640a..b9f24f1 100755
--- a/script/syndns.py
+++ b/script/syndns.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 #-*- coding: utf-8 -*-
 
 # vim: tabstop=4 shiftwidth=4 softtabstop=4
@@ -100,9 +100,9 @@ def reload_slave(slave_ip, system):
         sys.exit(-1)
 
     # reload slave dns
-    rndc_conf = '%s/rndc.key' % settings.named_path
+    rndc_conf = '%s/rndc.conf' % settings.named_path
     code = subprocess.call('/usr/bin/ssh %s@%s '
-                            '/usr/sbin/rndc -k %s -s localhost reload' %
+                            '/usr/sbin/rndc -c %s -s localhost reload' %
                             (user, slave_ip, rndc_conf), shell=True)
     if code:
         sys.stderr.write('reload slave name server %s failed\n' % slave_ip)
@@ -138,8 +138,8 @@ def main():
             settings.master_ip) for z in zones]))
 
     # reload master dns
-    rndc_conf = '%s/rndc.key' % settings.named_path
-    code = subprocess.call('/usr/sbin/rndc -k %s -s localhost reload' %
+    rndc_conf = '%s/rndc.conf' % settings.named_path
+    code = subprocess.call('/usr/sbin/rndc -c %s -s localhost reload' %
                            rndc_conf, shell=True)
     if code:
         sys.stderr.write('reload master name server failed\n')