I have successfully configured my XenServer environment to run DevStack. I decided to switch to a production environment. I configured a controller node on XenServer and a compute node (para virtualized vm hosted on Xen).
The dashboard is showing that provisioned VMs are created on the compute node. The compute node is hosting those VMs, unlike DevStack which provisioned VMs on XenServer directly. How can i configure nova service to use XCP ? i already followed the docs http://docs.openstack.org/juno/config-reference/content/introduction-to-xen.html (http://docs.openstack.org/juno/config...) with no luck. here is my nova.conf file

 [DEFAULT]
rpc_backend = rabbit
rabbit_host = controller
  rabbit_password = ***************
  auth_strategy = keystone
 dhcpbridge_flagfile=/etc/nova/nova.conf
 dhcpbridge=/usr/bin/nova-dhcpbridge
   logdir=/var/log/nova
    state_path=/var/lib/nova
     lock_path=/var/lock/nova
    force_dhcp_release=True
     libvirt_use_virtio_for_bridges=True
      verbose=True
   ec2_private_dns_show_ip=True
 api_paste_config=/etc/nova/api-paste.ini
  enabled_apis=ec2,osapi_compute,metadata
   my_ip = *****************
  vnc_enabled = False
   vncserver_listen = 0.0.0.0
   vncserver_proxyclient_address = *************
 novncproxy_base_url = http://**********:6080/vnc_auto.html
  compute_driver = xenapi.XenAPIDriver
 network_api_class = nova.network.api.API
 security_group_api = nova
 firewall_driver = nova.virt.libvirt.firewall.IptablesFirewallDriver
 network_manager = nova.network.manager.FlatDHCPManager
  network_size = 254
 allow_same_net_traffic = False
 multi_host = True
send_arp_for_ha = True
share_dhcp_address = True
force_dhcp_release = True
flat_network_bridge = br100
 flat_interface = eth2
public_interface = eth2

  [xenserver]
connection_url = http://***************
  connection_username = root
    connection_password = ************
   sr_matching_filter = "default-sr:true"
   [keystone_authtoken]
   auth_uri = http://controller:5000/v2.0
   identity_uri = http://controller:35357 
  admin_tenant_name = service 
  admin_user = nova
   admin_password = ************* 
  [glance]
   host = controller