Create a three-box environment using vagrant-testbed. Generates unique ssh keys for each box and removes default vagrant keys.

threebox.sh

#!/bin/bash

# make three boxes
BOXES=3 IP_START=60 vagrant up

# generate ssh keys
if [ ! -f /tmp/testbed1.pub ]; then
  ssh-keygen -b 2048 -t rsa -f /tmp/testbed1 -P "" -C "testbed1"
fi

if [ ! -f /tmp/testbed2.pub ]; then
  ssh-keygen -b 2048 -t rsa -f /tmp/testbed2 -P "" -C "testbed2"
fi

if [ ! -f /tmp/testbed3.pub ]; then
  ssh-keygen -b 2048 -t rsa -f /tmp/testbed3 -P "" -C "testbed3"
fi

# install keys
scp -i ~/.vagrant.d/insecure_private_key /tmp/testbed1.pub [email protected]:~/.ssh/authorized_keys
scp -i ~/.vagrant.d/insecure_private_key /tmp/testbed2.pub [email protected]:~/.ssh/authorized_keys
scp -i ~/.vagrant.d/insecure_private_key /tmp/testbed3.pub [email protected]:~/.ssh/authorized_keys