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coreos-base/oem-rackspace: Get public and private IP based on routes #184

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coreos-base/oem-rackspace: Get public and private IP based on routes #184

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30 changes: 24 additions & 6 deletions coreos-base/oem-rackspace/files/flatcar-setup-environment
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Original file line number Diff line number Diff line change
Expand Up @@ -19,17 +19,35 @@ sed -i -e '/^FLATCAR_PUBLIC_IPV4=/d' \

# We spin loop until the nova-agent sets up the ip addresses
function get_ip () {
IF=$1
IP=
PREFIX="$1"
while [ 1 ]; do
IP=$(ifconfig $IF | awk '/inet /{print $2}')
IP=""
IF="$(ip -4 route get $PREFIX | awk '{for(i=1;i<=NF;i++)if($i=="dev")print $(i+1)}')"
if [ "$IF" != "" ] && [ "$IF" != "lo" ]; then
IP=$(ifconfig $IF | awk '/inet /{print $2}')
fi
if [ "$IP" != "" ]; then
break
fi
sleep .1
done
echo "$IP"
}

function get_private_ip () {
STARTSWITH="$1"
IP=""
while [ 1 ]; do
IP="$(ifconfig | awk "/inet $STARTSWITH/"'{print $2}' | head -n 1)"
if [ "$IP" != "" ]; then
break
fi
sleep .1
done
echo $IP
echo "$IP"
}

echo FLATCAR_PUBLIC_IPV4=$(get_ip eth0) >> $ENV
echo FLATCAR_PRIVATE_IPV4=$(get_ip eth1) >> $ENV
# Gets IP for interface with route to 1.0.0.0
echo FLATCAR_PUBLIC_IPV4=$(get_ip 1) >> $ENV
# Gets IP starting with 10.
echo FLATCAR_PRIVATE_IPV4=$(get_private_ip "10.") >> $ENV