provide a helper shell script to wait for consul startup

[gozer]

Something like this should do the trick

We run early, so we need to account for Consul's startup time, unfortunately, magic isn't

always free

CONSUL_UP=-1
while [ "$CONSUL_UP" != "0" ]; do
QUERY=curl -s http://localhost:8500/v1/kv
CONSUL_UP=$?

if [ "$QUERY" != "" ]; then
CONSUL_UP=-2
fi

echo "Consul not ready yet ($CONSUL_UP), retrying..."
sleep 1
done

[bhourigan]

Indent the script, please

[limed]

I actually wrote a proof of concept on this here

[limed]

Of course that branch is missing some plumbing to make packer copy over to all base images. And then its a matter of just adding the following lines in a migrate script/whatever script that wants to use it

 [ -e /usr/local/lib/nubis/nubis-lib.sh ] && . /usr/local/lib/nubis/nubis-lib.sh || exit 1