controllers_nova.conf

[DEFAULT]
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
iscsi_helper=tgtadm
libvirt_use_virtio_for_bridges=True
connection_type=libvirt
root_helper=sudo nova-rootwrap /etc/nova/rootwrap.conf
verbose=True
ec2_private_dns_show_ip=True
api_paste_config=/etc/nova/api-paste.ini
volumes_path=/var/lib/nova/volumes
enabled_apis=ec2,osapi_compute,metadata

rpc_backend = rabbit
rabbit_host = controller
rabbit_password = RabbitPass#####

my_ip = 10.20.0.4
vncserver_listen = 10.20.0.4
vncserver_proxyclient_address = 10.20.0.4
######### 10.20.0.4 is controller_ip

auth_strategy = keystone

network_api_class = nova.network.neutronv2.api.API
neutron_url = http://controller:9696
neutron_auth_strategy = keystone
neutron_admin_tenant_name = service
neutron_admin_username = neutron
neutron_admin_password = NEUTRON_DBPASS
neutron_admin_auth_url = http://controller:35357/v2.0
linuxnet_interface_driver = nova.network.linux_net.LinuxOVSInterfaceDriver
firewall_driver = nova.virt.firewall.NoopFirewallDriver
security_group_api = neutron

service_neutron_metadata_proxy = true
neutron_metadata_proxy_shared_secret = METADATA_SECRET

[database]
connection = mysql://nova:NOVA_DBPASS@controller/nova

[keystone_authtoken]
auth_uri = http://controller:5000
auth_host = controller
auth_port = 35357
auth_protocol = http
admin_tenant_name = service
admin_user = nova
admin_password = Passw########

# I think This is not needed in controller but i included
[rdp]
enabled=true
html5_proxy_base_url=http://10.1.3.8:8000/