This fork of devstack brings up all in one openstack + opencontrail
system. Run stack.sh as usual to setup OpenStack + contrail modules.

Contrail directory also includes some sample localrc files.
1) localrc-single: for all-in-one system 
2) localrc-multinode-server: master host on a multi node system. 
3) localrc-multinode-compute: all compute nodes. 

Notes:
1) You will need to install kernel-devel package to compile OpenContrail
   Vrouter module
2) Stack.sh will create an additional screen "contrail" for contrail modules.
3) This fork use Nova and Neutron upstream master repositories and the
   OpenContrail Nova VIF driver and Neutron plugin repositories.
4) OpenStack + OpenContrail has been tested on FC17, Ubuntu 12.04 and 13.10
5) Repo tool uses SSH by default. Use ssh-agent to forward keys to target 
   running devstack or upload host's SSH keys to the github account.
   Set CONTRAIL_REPO_PROTO to https to use HTTPS instead. This line is 
   commented out in sample localrc file
6) Copy sample localrc-single as localrc for a single node system. Copy
   localrc-multinode-server and localrc-multinode-compute as localrc on 
   master and compute nodes respectively for a multi-node system.
7) After running unstack.sh, run ifconfig and verify IP address has been
   restored on PHYSICAL_INTERFACE and vhost0 interface is gone. Sometimes
   you might see "ERROR: Module vrouter is in use" after running unstack.sh
   which means interface cleanup couldn't be done since vrouter is busy and
   could not be uninstalled. Repeat unstack.sh untill the interfaces are
   restored to original state.
8) Protocol for openstack bits is also SSH by default. Uncomment out 
   GIT_BASE line to use https instead

Change the following in localrc to suit your deployment:
 PHYSICAL_INTERFACE -- external interface Vrouter should bind to
 SERVICE_HOST -- IP address of master

Steps for basic Ubuntu VM image
-------------------------------
1) ssh as ubuntu to target. Password should be ubuntu
2) Add following line to /etc/hosts to avoid
   "sudo: unable to resolve host ubuntu" error
   127.0.1.1 ubuntu
3) Get following packages. You may need to change linux header version
   package based on "uname -a" output
   sudo apt-get update
   sudo apt-get install git-core
   sudo aptitude install build-essential
   sudo apt-get install pkg-config 
   sudo apt-get install linux-headers-3.2.0-35-virtual (for vrouter.ko)
4) verify ssh to github is working
   ssh -T git@github.com
5) download devstack (should have already done this)
   git clone git@github.com:dsetia/devstack.git
6) copy sample localrc as mentioned above. Edit localrc 
   PHYSICAL_INTERFACE/SERVICE_HOST/... to match your setup

   cd devstack
   cp contrail/localrc-single localrc
   vi localrc  # edit PHYSICAL_INTERFACE
7) ./stack.sh

Steps for basic Fedora host
---------------------------
I perform these steps on a minimal Fedora host. You may not
need these steps and will depend upon your starting image.

1) sudo yum -y install git-core patch vim
2) sudo yum -y install kernel-devel-3.6.6-1
   My "uname -a" shows "Linux a6s34 3.6.6-1.fc17.x86_64"
3) sudo yum -y upgrade libtasn1
4) sudo yum -y install python-pip
5) sudo easy_install -U distribute
6) verify ssh to github is working
   ssh -T git@github.com
7) download devstack (should have already done this)
   git clone git@github.com:dsetia/devstack.git
8) copy sample localrc as mentioned above. Edit localrc 
   PHYSICAL_INTERFACE/SERVICE_HOST/... to match your setup

   cd devstack
   cp contrail/localrc-single localrc
   vi localrc  # edit PHYSICAL_INTERFACE
9) ./stack.sh


Software Gateway support
------------------------

Software gateway provides internet connectivity to virtual machines. It
supports routing between virtual-network and external public-networks. The
Simple Gateway is a restricted implementation of gateway. The features 
supported are,
    - A compute node provides Simple Gateway functionality for a single
      virtual-network
    - A virtual-network can ideally have multiple subnets. But, gateway 
      supports only one subnet per virtual-network
    - Relies on the networking stack of host operating-system to route packets
      between public-network and virtual-network

Configuration:
 Following parameters must be configured in localrc for Simple Gateway:

 CONTRAIL_VGW_PUBLIC_NETWORK 
    Specifies FQDN of the routing-instance that needs public access. 
    Example: If domain=default-domain, user=admin and vm=public, FQDN is 
             default-domain:admin:public:public
 CONTRAIL_VGW_PUBLIC_SUBNET
    Specifies the subnet configured for the virtual-network.
    Example: 192.168.1.0/24
 CONTRAIL_VGW_INTERFACE 
    A tap interface is created with this name. The interface is added to
    routing-instance of virtual-network. Packets to/from virtual-network 
    use this interface (Example: vgw)

Please see detailed instructions at:
https://github.com/Juniper/contrail-controller/wiki/Simple-Gateway