Managing the Samba AD DC Service Using an Init Script

Revision as of 15:29, 6 March 2013 by Rixter (talk | contribs)

This is a topic which pops every so often -- where are the Init scripts for Samba4? The problem is that init scripts are very distribution specific. The HOWTO states, "Samba4 alpha13 doesn't yet have init scripts included for each platform, but making one for your platform should not be difficult." Well, they may not be rocket science, but not everyone knows how to build a robust startup script and then integrate it with their particular startup infrastructure. This gets even more weird when distributions like Fedora radically overhaul their approach to init. (SysV to "systemd")

The intent of this page is to provide a sample of at least a few init scripts, listed by their distribution family (eg., Debian based systems and Red Hat/Fedora).

Red Hat/Fedora based systems

For SysV style service init scripts, Red Hat puts the init scripts in the /etc/rc.d/init.d directory, and then links to these scripts from the various run level directories (eg, link in /etc/rc3.d/S80samba4 -> ../rc.d/init.d/samba4)

Fedora has gone to a systemd based startup for Init. You can still use SysV style scripts such as this one, and configure the automatic startup of the Samba4 server ad different run levels through the "chkconfig" tool.

 #! /bin/bash
 #
 # samba4       Bring up/down samba4 service 
 #
 # chkconfig: - 90 10
 # description: Activates/Deactivates all samba4 interfaces configured to \
 #              start at boot time.
 #
 ### BEGIN INIT INFO
 # Provides: 
 # Should-Start: 
 # Short-Description: Bring up/down samba4
 # Description: Bring up/down samba4
 ### END INIT INFO
 # Source function library.
 . /etc/init.d/functions
 
 if [ -f /etc/sysconfig/samba4 ]; then
 	. /etc/sysconfig/samba4
 fi
 
 CWD=$(pwd)
 prog="samba4"
 
 start() {
       # Attach irda device 
       echo -n $"Starting $prog: "
 	/usr/local/samba/sbin/samba
 	sleep 2
 	if ps ax | grep -v "grep" | grep -q /samba/sbin/samba ; then success $"samba4 startup"; else failure $"samba4 startup"; fi
       echo
 }
 stop() {
       # Stop service.
       echo -n $"Shutting down $prog: "
 	killall samba
 	sleep 2
 	if ps ax | grep -v "grep" | grep -q /samba/sbin/samba ; then failure $"samba4 shutdown"; else success $"samba4 shutdown"; fi
       echo
 }
 status() {
 	/usr/local/samba/sbin/samba --show-build
 }
 
 # See how we were called.
 case "$1" in
 start)
 	start
       ;;
 stop)
 	stop
       ;;
 status)
 	status irattach
 	;;
 restart|reload)
 	stop
 	start
 	;;
 *)
       echo $"Usage: $0 {start|stop|restart|status}"
       exit 1
 esac
 
 exit 0


Debian Systems

1) Retrieve the init script

To retrieve the Debian init script, run either:

  $ bzr cat http://bzr.debian.org/bzr/pkg-samba/samba4/unstable/debian/samba4.init > /etc/init.d/samba4

Or if you don't have bzr:

  $ wget http://anonscm.debian.org/loggerhead/pkg-samba/samba4/unstable/download/head:/1833%40fc4039ab-9d04-0410-8cac-899223bdd6b0:trunk%252Fsamba4:debian%252Fsamba4.init/samba4.init -O /etc/init.d/samba4

2) (Optional) Update the path where Samba is installed

The Debian package assumes that Samba is installed in /usr. If you've installed it in the default location (/usr/local/samba) instead, run:

  $ sed -i 's|/usr/sbin|/usr/local/samba/sbin|g' /etc/init.d/samba4

3) Make the init script executable

Make the init script executable by running:

  $ chmod 755 /etc/init.d/samba4

4) Enable the script at startup

  $ update-rc.d samba4 defaults

Upstart Systems (such as Ubuntu)

Ubuntu uses the upstart system. To retrieve the upstart config file, run:

  $ bzr cat http://bzr.debian.org/bzr/pkg-samba/samba4/unstable/debian/samba4.upstart > /etc/init/samba4.conf

The upstart file doesn't appear to be there any more...so here's one that appears to work.
It normally goes here: /etc/init/samba4.conf
Change the exec line to point to where ever the samba executable is. By default it's here: /usr/local/samba/sbin/

description "SMB/CIFS File and Active Directory Server"
author      "Jelmer Vernooij <jelmer@ubuntu.com>"
start on (local-filesystems and net-device-up)
stop on runlevel [!2345]
expect fork
normal exit 0
pre-start script
	[ -r /etc/default/samba4 ] && . /etc/default/samba4
	install -o root -g root -m 755 -d /var/run/samba
	install -o root -g root -m 755 -d /var/log/samba
end script
exec /usr/local/samba/sbin/samba -D


The following init script will start the samba a source installed samba NON AD server:

#!/bin/sh

### BEGIN INIT INFO
# Provides:          samba
# Required-Start:    $network $local_fs $remote_fs
# Required-Stop:     $network $local_fs $remote_fs
# Default-Start:     2 3 4 5
# Default-Stop:      0 1 6
# Should-Start:      slapd
# Should-Stop:       slapd
# Short-Description: start Samba daemons (nmbd and smbd)
### END INIT INFO

# Description of this script:
#                    
# This script comes initially from a Debian Squeeze machine on
# which samba 3.x was installed with "apt-get install samba". The script
# was modified/adjusted so it points to the correct paths of a default
# samba4 installation (/usr/local/samba).
#
# Installation instructions:
# (1) copy the content of this script into your clipboard or download it
# (2) save the content into /etc/init.d/samba of your samba4 host.
# (3) execute "chmod +x /etc/init.d/samba" to have the script executable
# (4) execute "update-rc.d samba defaults" to install auto-start function.
#     smbd+nmbd will automatically being started after earch system start/reboot
# 
# Modified by local@#samba~irc.freenode.net at 06th March 2013
# The script was successfully tested on Debian GNU/Linux Squeeze+Wheezy

# Defaults
RUN_MODE="daemons"

# Reads config file (will override defaults above)
[ -r /etc/default/samba ] && . /etc/default/samba

PIDDIR=/usr/local/samba/var/run
NMBDPID=$PIDDIR/nmbd.pid
SMBDPID=$PIDDIR/smbd.pid

# clear conflicting settings from the environment
unset TMPDIR

# See if the daemons are there
test -x /usr/local/samba/sbin/nmbd -a -x /usr/local/samba/sbin/smbd || exit 0

. /lib/lsb/init-functions

case "$1" in
        start)
                log_daemon_msg "Starting Samba daemons"
                # Make sure we have our PIDDIR, even if it's on a tmpfs
                install -o root -g root -m 755 -d $PIDDIR

                NMBD_DISABLED=`testparm -s --parameter-name='disable netbios' 2>/dev/null`
                if [ "$NMBD_DISABLED" != 'Yes' ]; then
                        log_progress_msg "nmbd"
                        if ! start-stop-daemon --start --quiet --oknodo --exec /usr/local/samba/sbin/nmbd -- -D
                        then
                                log_end_msg 1
                                exit 1
                        fi
                fi

           if [ "$RUN_MODE" != "inetd" ]; then
                        log_progress_msg "smbd"
                        if ! start-stop-daemon --start --quiet --oknodo --exec /usr/local/samba/sbin/smbd -- -D; then
                                log_end_msg 1
                                exit 1
                        fi
                fi

                log_end_msg 0
                ;;
        stop)
                log_daemon_msg "Stopping Samba daemons"
                log_progress_msg "nmbd"

                start-stop-daemon --stop --quiet --pidfile $NMBDPID
                # Wait a little and remove stale PID file
                sleep 1
                if [ -f $NMBDPID ] && ! ps h `cat $NMBDPID` > /dev/null
                then
                        # Stale PID file (nmbd was succesfully stopped),
                        # remove it (should be removed by nmbd itself IMHO.)
                        rm -f $NMBDPID
                fi 

                if [ "$RUN_MODE" != "inetd" ]; then
                        log_progress_msg "smbd"
                        start-stop-daemon --stop --quiet --pidfile $SMBDPID
                        # Wait a little and remove stale PID file
                        sleep 1
                        if [ -f $SMBDPID ] && ! ps h `cat $SMBDPID` > /dev/null
                        then
                                # Stale PID file (nmbd was succesfully stopped),
                                # remove it (should be removed by smbd itself IMHO.)
                                rm -f $SMBDPID
                        fi
                fi

                log_end_msg 0

                ;;

     reload)
                log_daemon_msg "Reloading /usr/local/samba/etc/smb.conf" "smbd only"

                start-stop-daemon --stop --signal HUP --pidfile $SMBDPID

                log_end_msg 0
                ;;
        restart|force-reload)
                $0 stop
                sleep 1
                $0 start
                ;;
        status)
                status="0"
                NMBD_DISABLED=`testparm -s --parameter-name='disable netbios' 2>/dev/null`
                if [ "$NMBD_DISABLED" != "Yes" ]; then
                        status_of_proc -p $NMBDPID /usr/local/samba/sbin/nmbd nmbd || status=$?
                fi
                if [ "$RUN_MODE" != "inetd" ]; then
                        status_of_proc -p $SMBDPID /usr/local/samba/sbin/smbd smbd || status=$?
                fi
                if [ "$NMBD_DISABLED" = "Yes" -a "$RUN_MODE" = "inetd" ]; then
                        status="4"
                fi
                exit $status
                ;;
        *)
                echo "Usage: /etc/init.d/samba {start|stop|reload|restart|force-reload|status}"
                exit 1
                ;;
esac
exit 0