Create droplet using tugboat, and wait for it. Wait till we can ssh_keyscan can get it's host key. Update my known_hosts. Plus, a paranoid check that ssh is working reliability.

start-droplet-setup-ssh

#!/bin/bash

#  Usage: start-droplet-setup-ssh <name> london docker

NAME="$1"
REGION="$2"
IMAGE="$3"

function LOG() { echo "LOG: $*" ; }
function ERROR() { echo "ERROR: $*" ; exit 1 ;}
function wrapup(){ LOG install start for $NAME; }
trap wrapup EXIT
set -o nounset -o errexit

if tugboat droplets 2>/dev/null | grep --silent "$NAME" ; then
   ERROR "Droplet $NAME already exists"
fi

LOG Enqueue creation request for $NAME in $REGION, a $IMAGE
case $REGION in
    london) REGION=7 ;;
    *)      ERROR Unknown region $REGION ;;
esac
case $IMAGE in
docker) IMAGE=18494 ;;
*) ERROR unknown image $IMAGE ;;
esac
tugboat create -k "$IMAGE" -r "$REGION" -i 4970653 "$NAME"

LOG 'Wait for the end of creation.'
tugboat wait "--name=$NAME"
IP="$(tugboat info --name=$NAME | sed -n '/IP/s/^.* //p')"
LOG "Address of droplet $NAME is  $IP"


LOG waiting for sshd and get hostkey
while echo ".." ; do
    HOSTKEY="$( ssh-keyscan -T 20 $IP 2> /dev/null )"
    if [[ ouch != "ouch$HOSTKEY" ]] ; then
        echo "$HOSTKEY"
        break
    fi
done

LOG Add $NAME to known_hosts
cp ~/.ssh/known_hosts ~/.ssh/known_hosts.old
sed "/^$IP /d" ~/.ssh/known_hosts.old > ~/.ssh/known_hosts
echo "$HOSTKEY" >> ~/.ssh/known_hosts

LOG Check for reliablity
ID="root@$IP"
for i in 1 2 3 4 5 6 7 8 9 10 11 12 13 ; do
    echo -n "$i --"
    if ! ssh -o ConnectTimeout=3 "$ID" uptime 2>&1 ; then
        traceroute "$IP"
        :
    fi
    sleep 3
done

LOG "$NAME is available via ssh root@$IP"
exit 0