reboot persistent ssh tunnel

tunnel.conf

# location: /etc/init/tunnel.conf 
description "persistent ssh tunnel through reboots"
author "morgan mcdaris <[email protected]>"

start on (local-filesystems and net-device-up IFACE=eth0)
stop on runlevel [016]

respawn
respawn limit 5 60

script
  exec su LOCAL_USERNAME -c "ssh -N -R 4040:localhost:22 -i /home/LOCAL_USERNAME/.ssh/id_rsa REMOTE_USERNAME@REMOTE_MACHINE_IP"
end script

post-start script
   PID=`status tunnel | egrep -oi '([0-9]+)$' | head -n1`
   echo $PID > /var/run/tunnel.pid
end script

post-stop script
    rm -f /var/run/tunnel.pid
end script