README.create-ostack-nodes

Prepare virtual machines for OpenStack setup
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Syntax:

    Usage: ./create-ostack-nodes.sh CONTROLLER_NAME CONTROLLER_DISK_SIZE \ 
                            CONTROLLER_MEM COMPUTE_NAME \ 
                            COMPUTE_DISK_SIZE COMPUTE_MEM ROOTPW


To create two virtual machines, one (Controller node) with 40G disk,
4096MB memory; and the other (Compute node) with 50G disk, 6144MB memory
with root password as 'fedora':

    ./create-ostack-nodes.sh controller 40G 4096 compute 50G 6144 fedora


The script does the following:

     - Checks if the host has enough free memory of at-least 10G
     - Creates 2 virtual machines
     - Imports the virtual machines into libvirt
     - Checks if nested virtualization is enabled or not
     - Enables host-passthrough on Compute node
     - Takes a libvirt QCOW2 internal snapshot of Controller and Compute
       nodes
     - Starts the virtual machines