Open Stack

I am installing Openstack Icehouse 3-node-architecture following the
document
http://docs.openstack.org/icehouse/install-guide/install/apt/content/index.html
in Ubuntu 14.04 LTS.

NIC cards for each node :

   - Network node : 3 NIC cards

         1 : management interface
         2 : Instance Tunnel Interface
         3 : External interface


   - Controller Node : 1 NIC card

         1 : Management interface


   - Compute node : 2 NIC cards

         1 : Management Interface
         2 : Instance Tunnel interface


   1. To verify connectivity other than pinging to these NICs they say to
   ping to a site on the internet. There is no network connectivity in any
   nodes. So how is it possible?
   2. After configuring the interfaces file on *Network node* for
   eth2(External interface) , external network connectivity loses on each
   reboot. The  /etc/network/interfaces file is edited as follows :
   3.

   auto *INTERFACE_NAME*
   iface *INTERFACE_NAME* inet manual
           up ip link set dev $IFACE up
           down ip link set dev $IFACE do
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