Quick bash script for cleaning up ec2 instances and associated opscode node/client. Accepts partial/full instance name as an argument.

delete-ec2-node.sh

#!/bin/bash
INSTANCE="$1"
if [ "x$INSTANCE" = "x" ]; then
    echo "Please specify an instance"
    exit 1
fi
INSTANCE=$(knife ec2 server list | awk "/$INSTANCE/{ print \$1 }")
if [ "x$INSTANCE" = "x" ]; then
    echo 'Instance not found'
    exit 2
fi
echo -n "Are you sure you want to delete $INSTANCE? [y/n] "
read DELETE
DELETE=$(echo $DELETE | tr '[A-Z]' '[a-z]')
if [ "$DELETE" != "y" ]; then
    echo "Not deleting"
    exit 0
fi
yes | knife ec2 server delete "$INSTANCE" && yes | knife node delete "$INSTANCE" && yes | knife client delete "$INSTANCE" && echo "Instance deleted" && exit 0

echo "Couldn't delete instance and/or clean up opscode client and node"
exit 3