Here you can find various hacky scripts made for various purposes, that may or may not be useful.
A Ruby script that uses SSH to log into each imaged node and
- sets the data plane interface address to 192.168.x.y, where the node is nodex-y,
- pings the arbitrary address 192.168.0.1
- fetches the HW address of each node
The output of this script is a list of [x,y] : HWaddr pairs that can be compared with the MAC address table in a switch to determine which port a node lives on. The script forces the switch to populate its table by pinging the nonexistent address. The syntax is:
ruby pingmapper.rb [MIN_X] [MAX_X] [MIN_Y] [MAX_Y] -[m|p]
Where the script is run from a sandbox console and MIN_X, MAX_X, MIN_Y and MAX_Y are the range of node ID's [X,Y] to map through,
-m just returns the MAC address mappings, and
-p populates the MAC table of the switch using ping. No flags configures eth0 of each node and runs both tests.
A collection of Ruby functions that can be clobbered together into a mapping script. For example:
require "gridmap.rb" puts "enter node ID as \"x1,y1; x2,y2;...\"\n" puts "enter \"quit\" to exit\n" g = Grid.new nodes = nil while nodes = gets.chomp.split(';') break if nodes.first == "quit" nodes.each do |el| r,c = *(el.split(',')) p g.switch_of(r.to_i,c.to_i) end end
Returns a [switch, switchport] mapping for a node [x,y], or list of nodes x1,y1;x2,y2…:
# ruby sample.rb enter node ID as "x1,y1; x2,y2;..." enter "quit" to exit 1,1 [253, 32] 1,2 [8, 39] 20,20;19,19 [1, 2] [1, 44] quit
The functions assume underlying wires are there correctly, so it is not 100% accurate. This is for hipshot guesstimates when you don't need exact locations and want them fast.