diff --git a/check_openstack.py b/check_openstack.py
index 548051b..fd92b28 100644
--- a/check_openstack.py
+++ b/check_openstack.py
@@ -16,6 +16,9 @@ def get_credentials(site_id):
     creds['version'] = '2'
     return creds
 
+def get_keystoneclient(creds):
+    return keystone_auth(**creds)
+
 def get_auth_token(creds):
     keystone_client = keystone_auth(**creds)
     
@@ -27,9 +30,10 @@ def get_servers(creds):
     print(nova_client.servers.list())
 
 def get_cores(creds):
-    url="http://placement.example.com:8778"
+    keystone = get_keystoneclient(creds)
+    token = keystone.auth_token
 
-    token = get_auth_token(creds)
+    url = keystone.service_catalog.get_endpoints(service_name="placement",endpoint_type="public")['placement'][0]['url']
 
     headers = {}
     headers['content-type'] = 'application/json'