title: AMQP server on localhost:5672 is unreachable: [Errno 111] ECONNREFUSED
body: <p>i am trying to add additional compute node on different virtual machine to the pre-installed openstack. I disabled the firewall services,enable to ping other virtual machine.. but still compute node is not able to register with Rabbitmq service running on controller node..
  Here it is my nova.conf file... </p>
  
  <pre><code>[DEFAULT]
  dhcpbridge_flagfile=/etc/nova/nova.conf
  dhcpbridge=/usr/bin/nova-dhcpbridge
  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
  auth_strategy = keystone
  use_neutron = True
  firewall_driver = nova.virt.firewall.NoopFirewallDriver
  my_ip = #compute node ip
  rabbit_host= #controller_node_ip
  rabbit_port = 5672
  rabbit_userid = stackrabbit
  rabbit_password = devstack
  rabbit_use_ssl = False
  rabbit_virtual_host=/
  
  [keystone_authtoken]
  auth_uri = http://controller_node_ip:5000
  auth_url = http://controller_node_ip:35357
  memcached_servers = controller_node_ip:11211
  auth_type = password
  project_domain_name = default
  user_domain_name = default
  project_name = service
  username = nova
  password = devstack
  auth_host = controller_node_ip
  auth_port = 35357
  auth_protocol = http
  
  [vnc]
  enabled = True
  vncserver_listen = 0.0.0.0
  vncserver_proxyclient_address = $my_ip
  novncproxy_base_url = http://controller_node_ip:6080/vnc_auto.html
  
  [glance]
  api_servers = http://controller_node_ip:9292
  
  [oslo_concurrency]
  lock_path = /var/lib/nova/tmp
  </code></pre>
  
  <p>Here it is my nova-compute.log:</p>
  
  <pre><code>2016-09-20 19:08:57.701 7201 INFO oslo.messaging._drivers.impl_rabbit [-] Reconnecting to AMQP server on localhost:5672
  2016-09-20 19:08:57.701 7201 INFO oslo.messaging._drivers.impl_rabbit [-] Delaying reconnect for 1.0 seconds...
  2016-09-20 19:08:58.708 7201 ERROR oslo.messaging._drivers.impl_rabbit [-] AMQP server on localhost:5672 is unreachable: [Errno 111] ECONNREFUSED. Trying again in 30 seconds...
  </code></pre>
  
  <p>Please suggest me something so that i can resolve this issue...
  Thank you in advance... </p>