Inventory Gathering

• Data Structure
• Node Image
• Expirment details

Data Structure

Our layout will try to capture the relationship between nodes (which for our current purposes means motherboards) and devices (any network/communication device). The relationship heirachy looks like this:

TESTBED -
         |
         -> Node -
            -INV_... -- Inventory Attributes (e.g. motherboard serial number, disk size, cpu type,...)
            -INF_... -- Infrastructure Attributes  (Control IP, Control interface,...)
            -CM_...  -- CM attributes (e.g. CM IP, CM Version, ...)
                 |
                 -> Device
                    -name = FQDNofNode_dev_unique#
                    -INV_if_name= "name the os thinks this device is. (e.g. eth0)"
                    -INV_dev_id = "xxxx:xxxx" where the x's are hex numbers that represent the device identifiers. 

To reflect these relationships we're going to establish a few naming conventions. These will be enumerated in the following table

Hardware	resource type	name	attributes (all prefixed with INV_)
Mother board	Node	FQDNofNode	disk, cpu, memory, mother board serial number, disk serial number
Wired ethernet card	Device	FQDNofNode_DEV_unique#	mac, device id, device string, bus type
Wireless ethernet card	Device	FQDNofNode_DEV_unique#	mac, device id, device string, bus type
USB connected device	Device	FQDNofNode_DEV_unique#	mac (if it exists), device id, device string, bus type

Node Image

The node image is a very slight modification of the baseline image. It only has one addition package ruby rest api (lsusb and lspci are installed by default), which is installed by:

root@node.. apt-get install ruby-rest-lib

There are two scripts that are copied to /root directory of the node, gatherer.rb and inventory.sh. Inventory.sh is merely a launchers that specifies where to redirect logs, and where the lspci/lsusb binaries are (set via flags when invoking gatherer.rb). Inventory.sh is added to the node startup routine (this will hopefully change) at priority s99. When the node boots into this image it should immediately begin the inventory process.