My Ubuntu Startup Script

[Seth Leedy]

#! /bin/sh

### BEGIN INIT INFO

# Provides:          dyn_vpn

# Required-Start:    $remote_fs $syslog

# Required-Stop:     $remote_fs $syslog

# Default-Start:     2 3 4 5

# Default-Stop:      0 1 6

# Short-Description: Start the VPN from DYN_VPN

# Description:       Custom script to start DYN_VPN

#                    

### END INIT INFO

# Author: Seth Leedy <webm...@sethleedy.name> 2016/02/10

#

# Please remove the "Author" lines above and replace them

# with your own name if you copy and modify this script.

# Do NOT "set -e"

# PATH should only include /usr/* if it runs after the mountnfs.sh script

PATH=/sbin:/usr/sbin:/bin:/usr/bin

DESC="DYN VPN service"

NAME="netvirt-agent"

DAEMON=/usr/bin/$NAME

DAEMON_ARGS=""

PIDFILE=/var/run/$NAME.pid

SCRIPTNAME=/etc/init.d/dyn_vpn

RUNASUSER="root"

# Exit if the package is not installed

[ -x "$DAEMON" ] || exit 0

# Read configuration variable file if it is present

[ -r /etc/default/$NAME ] && . /etc/default/$NAME

# Load the VERBOSE setting and other rcS variables

. /lib/init/vars.sh

# Define LSB log_* functions.

# Depend on lsb-base (>= 3.2-14) to ensure that this file is present

# and status_of_proc is working.

. /lib/lsb/init-functions

#

# Function that starts the daemon/service

#

do_start()

{

# Return

#   0 if daemon has been started

#   1 if daemon was already running

#   2 if daemon could not be started

start-stop-daemon --start --quiet --pidfile $PIDFILE --user "$RUNASUSER" --chdir "/root" --exec $DAEMON --test > /dev/null \

|| return 1

start-stop-daemon --start --quiet --pidfile $PIDFILE --background --chuid "root" --user "$RUNASUSER" --chdir "/root" --exec $DAEMON -- \

$DAEMON_ARGS \

|| return 2

# Add code here, if necessary, that waits for the process to be ready

# to handle requests from services started subsequently which depend

# on this one.  As a last resort, sleep for some time.

}

#

# Function that stops the daemon/service

#

do_stop()

{

# Return

#   0 if daemon has been stopped

#   1 if daemon was already stopped

#   2 if daemon could not be stopped

#   other if a failure occurred

start-stop-daemon --stop --quiet --user "$RUNASUSER" --retry=TERM/30/KILL/5 --pidfile $PIDFILE --name $NAME

RETVAL="$?"

[ "$RETVAL" = 2 ] && return 2

# Wait for children to finish too if this is a daemon that forks

# and if the daemon is only ever run from this initscript.

# If the above conditions are not satisfied then add some other code

# that waits for the process to drop all resources that could be

# needed by services started subsequently.  A last resort is to

# sleep for some time.

start-stop-daemon --stop --quiet --user "$RUNASUSER" --oknodo --retry=0/30/KILL/5 --exec $DAEMON

[ "$?" = 2 ] && return 2

# Many daemons don't delete their pidfiles when they exit.

rm -f $PIDFILE

return "$RETVAL"

}

#

# Function that sends a SIGHUP to the daemon/service

#

do_reload() {

#

# If the daemon can reload its configuration without

# restarting (for example, when it is sent a SIGHUP),

# then implement that here.

#

start-stop-daemon --stop --signal 1 --quiet --pidfile $PIDFILE --name $NAME

return 0

}

case "$1" in

  start)

[ "$VERBOSE" != no ] && log_daemon_msg "Starting $DESC" "$NAME"

do_start

case "$?" in

0|1) [ "$VERBOSE" != no ] && log_end_msg 0 ;;

2) [ "$VERBOSE" != no ] && log_end_msg 1 ;;

esac

;;

  stop)

[ "$VERBOSE" != no ] && log_daemon_msg "Stopping $DESC" "$NAME"

do_stop

case "$?" in

0|1) [ "$VERBOSE" != no ] && log_end_msg 0 ;;

2) [ "$VERBOSE" != no ] && log_end_msg 1 ;;

esac

;;

  status)

status_of_proc "$DAEMON" "$NAME" && exit 0 || exit $?

;;

  #reload|force-reload)

#

# If do_reload() is not implemented then leave this commented out

# and leave 'force-reload' as an alias for 'restart'.

#

#log_daemon_msg "Reloading $DESC" "$NAME"

#do_reload

#log_end_msg $?

#;;

  restart|force-reload)

#

# If the "reload" option is implemented then remove the

# 'force-reload' alias

#

log_daemon_msg "Restarting $DESC" "$NAME"

do_stop

case "$?" in

 0|1)

do_start

case "$?" in

0) log_end_msg 0 ;;

1) log_end_msg 1 ;; # Old process is still running

*) log_end_msg 1 ;; # Failed to start

esac

;;

 *)

# Failed to stop

log_end_msg 1

;;

esac

;;

  *)

#echo "Usage: $SCRIPTNAME {start|stop|restart|reload|force-reload}" >&2

echo "Usage: $SCRIPTNAME {start|stop|status|restart|force-reload}" >&2

exit 3

;;

esac

:

[Nicolas J. Bouliane]

Very cool ! this is clearly something missing in our linux package,

we will definitively have a look at it :)

[Sam Roy]

Great script... I'm going to give it a try tomorrow.

[Sebastian Nilsson]

Tried it but could not get it to work. I found it easier to use supervisor instead. Sharing my solution if someone gets stuck like I did: https://sebastiannilsson.com/blog/setup-free-vpn-between-windows-and-ubuntu-linux-computers/