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Scripted configuration of TightVNC with Start on boot

Posted on 2016-11-08
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Last Modified: 2016-11-14
Hi,

I'm trying to develop a script that I can work into an unattended build that will configure TightVNC on Kali linux (based on Debian) and then ensure that it runs on boot

Here is what I have currently in my bash script (deploy.sh)

# Configure VNC Password
umask 0077                                        # use safe default permissions
mkdir -p "$HOME/.vnc"                             # create config directory
chmod go-rwx "$HOME/.vnc"                         # enforce safe permissions
vncpasswd -f <<<"remotecl" >"$HOME/.vnc/passwd"  # generate and write a password

# Start VNC 
/usr/bin/tightvncserver -geometry 1500x700 -depth 16

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This is setting the password and starting the VNC server however when the machine is restarted, the service does not start back up

Can someone help me with this please
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Question by:aideb
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7 Comments
 
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Accepted Solution

by:
Scott Silva earned 450 total points
ID: 41879604
I'm not fully vetted on Debian, but you will need to get a startup script or at least a link into the init process...
I assume it is using System V init...   This might help.
https://www.cyberciti.biz/tips/linux-write-sys-v-init-script-to-start-stop-service.html
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Author Comment

by:aideb
ID: 41879628
Thanks Scott,

That has moved me along nicely - I used the info in your link and discovered another post

I did

sudo nano /etc/initd/vncserver

and populated this with

#!/bin/sh -e
### BEGIN INIT INFO
# Provides:          vncserver
# Required-Start:    networking
# Default-Start:     3 4 5
# Default-Stop:      0 6
### END INIT INFO

PATH="$PATH:/usr/X11R6/bin/"

# The Username:Group that will run VNC
export USER="labuser"
#${RUNAS}

# The display that VNC will use
DISPLAY="1"

# Color depth (between 8 and 32)
DEPTH="16"

# The Desktop geometry to use.
#GEOMETRY="<WIDTH>x<HEIGHT>"
#GEOMETRY="800x600"
GEOMETRY="1024x768"
#GEOMETRY="1280x1024"

# The name that the VNC Desktop will have.
NAME="my-vnc-server"

OPTIONS="-name ${NAME} -depth ${DEPTH} -geometry ${GEOMETRY} :${DISPLAY}"

. /lib/lsb/init-functions

case "$1" in
start)
log_action_begin_msg "Starting vncserver for user '${USER}' on   localhost:${DISPLAY}"
su ${USER} -c "/usr/bin/tightvncserver ${OPTIONS}"
;;

stop)
log_action_begin_msg "Stoping vncserver for user '${USER}' on localhost:${DISPLAY}"
su ${USER} -c "/usr/bin/tightvncserver -kill :${DISPLAY}"
;;

restart)
$0 stop
$0 start
;;
esac

exit 0

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I can now start the service with

/etc/initd/vncserver start

and stop with

/etc/initd/vncserver stop


How can I get the start command to execute on boot?

Cheers
0
 
LVL 10

Assisted Solution

by:Scott Silva
Scott Silva earned 450 total points
ID: 41879632
You need a link to that script in /etc/rcx.d  where x is the run level you are starting in... Usually 3 for a headless server, and 5 for a graphical desktop... The link is named with an "S" and a number corresponding with what order it should start... Higher numbers start later... This is so you can make sure dependent services start earlier...  You also technically should have a shortcut in /etc/rc0.d starting with a "K" so the process can be shutdown in an orderly manner...
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Author Comment

by:aideb
ID: 41879649
Great - Thanks Scott

I ran this

sudo ln -s /etc/initd/vncserver /etc/rc5.d/S08vncserver
sudo ln -s /etc/initd/vncserver /etc/rc0.d/K01vncserver

and it started on boot!

How am I best automating this so that I can add it all to my deploy.sh
0
 
LVL 10

Assisted Solution

by:Scott Silva
Scott Silva earned 450 total points
ID: 41879722
You would just have to add all the steps you did into your script... You could either copy a script in from a server, or use whatever you feel comfortable to echo the lines into the scripts, or maybe sed...  I would just make a tar file with all the shortcuts in it and untar it relative to where everything goes...
0
 
LVL 28

Assisted Solution

by:serialband
serialband earned 50 total points
ID: 41880877
You should be able to do the following on debian based systems that use Sys V init:
update-rc.d vncserver defaults

To remove it
update-rc.d vncserver defaults

They should be a little less error prone than manually linking them in the directories.
1
 
LVL 2

Author Closing Comment

by:aideb
ID: 41886167
Thanks for all your assistance to resolve this!
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