fix bugs
diff --git a/plstackapi/openstack/manager.py b/plstackapi/openstack/manager.py
index 50a36e2..eb76ff7 100644
--- a/plstackapi/openstack/manager.py
+++ b/plstackapi/openstack/manager.py
@@ -1,32 +1,51 @@
 from plstackapi.planetstack import settings
 from django.core import management
 management.setup_environ(settings)
-from plstackapi.openstack.shell import OpenStackShell
+from plstackapi.openstack.client import OpenStackClient
 
 
 class Manager:
 
     def __init__(self):
         
-        self.shell = OpenStackShell()
+        self.client = OpenStackClient()
 
     def refresh_nodes(self):
         # collect local nodes
-        from plstackapi.planetstack.models import Node
+        from plstackapi.core.models import Node
+        from plstackapi.core.models import DeploymentNetwork
+        from plstackapi.core.models import Site
         nodes = Node.objects.all()
         nodes_dict = {}
         for node in nodes:
-            nodes_dict[node.name] = node 
+            if 'viccidev10' not in node.name:
+                nodes_dict[node.name] = node 
+        
+        deployment = DeploymentNetwork.objects.filter(name='VICCI')
+        login_bases = ['princeton', 'stanford', 'gt', 'uw', 'mpisws']
+        sites = Site.objects.filter(login_base__in=login_bases)
+        nodes_per_site = len(nodes)/len(sites)
+        
+        def chunks(l, n):
+            return [l[i:i+n] for i in range(0, len(l), n)]
 
         # collect nova nodes:
-        compute_nodes = self.shell.nova.hypervisors.list()
+        compute_nodes = self.client.nova.hypervisors.list()
+
         compute_nodes_dict = {}
         for compute_node in compute_nodes:
             compute_nodes_dict[compute_node.hypervisor_hostname] = compute_node
 
         # add new nodes:
+        counter = 1
         new_node_names = set(compute_nodes_dict.keys()).difference(nodes_dict.keys())
+
+        def chunks(l, n):
+            return [l[i:i+n] for i in range(0, len(l), n)]
+
+        node_chunks = chunks(compute_nodes, nodes_per_site)
         for name in new_node_names:
+            for 
             node = Node(name=compute_nodes_dict[name].hypervisor_hostname)
             node.save()
 
@@ -36,14 +55,14 @@
 
     def refresh_flavors(self):
         # collect local flavors
-        from plstackapi.planetstack.models import Flavor
+        from plstackapi.core.models import Flavor
         flavors = Flavor.objects.all()
         flavors_dict = {}
         for flavor in flavors:
             flavors_dict[flavor.name] = flavor
 
         # collect nova falvors
-        nova_flavors = self.shell.nova.flavors.list()
+        nova_flavors = self.client.nova.flavors.list()
         nova_flavors_dict = {}
         for nova_flavor in nova_flavors:
             nova_flavors_dict[nova_flavor.name] = nova_flavor
@@ -65,14 +84,14 @@
             
     def refresh_images(self):
         # collect local images
-        from plstackapi.planetstack.models import Image
+        from plstackapi.core.models import Image
         images = Image.objects.all()
         images_dict = {}    
         for image in images:
             images_dict[image.name] = image
 
         # collect glance images
-        glance_images = self.shell.glance.get_images()
+        glance_images = self.client.glance.get_images()
         glance_images_dict = {}
         for glance_image in glance_images:
             glance_images_dict[glance_image['name']] = glance_image
@@ -89,5 +108,3 @@
         # remove old images
         old_image_names = set(images_dict.keys()).difference(glance_images_dict.keys())
         Image.objects.filter(name__in=old_image_names).delete()
-        
-