Managing the Samba AD DC Service Using an Init Script

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Revision as of 22:53, 22 January 2017 by Jmhunter (talk | contribs) (→‎Debian)

Introduction

The following describes how to use an init script to manage the Samba Active Directory (AD) domain controller (DC) service. Depending on your operating system, the location of the init script, its content, and the procedures how to manage the service can be different. For details, see your operating system's documentation.



Creating the Init Script

Red Hat Enterprise Linux 6

  • Create the /etc/init.d/samba-ad-dc file with the following content:
#!/bin/bash
#
# samba-ad-dc	This shell script takes care of starting and stopping
# 		samba AD daemons.
#
# chkconfig: - 58 74
# description: Samba Active Directory Domain Controller

### BEGIN INIT INFO
# Provides: samba-ad-dc
# Required-Start: $network $local_fs $remote_fs
# Required-Stop: $network $local_fs $remote_fs
# Should-Start: $syslog $named
# Should-Stop: $syslog $named
# Short-Description: start and stop samba-ad-dc
# Description: Samba Active Directory Domain Controller
### END INIT INFO

# Source function library.
. /etc/init.d/functions
 
# Source networking configuration.
. /etc/sysconfig/network
 
prog=samba
prog_dir=/usr/local/samba/sbin/
lockfile=/var/lock/subsys/$prog
 
start() {
	[ "$NETWORKING" = "no" ] && exit 1
	echo -n $"Starting Samba AD DC: "
	daemon $prog_dir/$prog -D
	RETVAL=$?
	echo
	[ $RETVAL -eq 0 ] && touch $lockfile
	return $RETVAL
}

 stop() {
	[ "$EUID" != "0" ] && exit 4
	echo -n $"Shutting down Samba AD DC: "
	killproc $prog_dir/$prog
	RETVAL=$?
	echo
	[ $RETVAL -eq 0 ] && rm -f $lockfile
	return $RETVAL
}
 
case "$1" in
start)
	start
	;;
stop)
	stop
	;;
status)
	status $prog
	;;
restart)
	stop
	start
	;;
*)
	echo $"Usage: $0 {start|stop|status|restart}"
	exit 2
esac
  • Make the script executeable:
# chmod 755 /etc/init.d/samba-ad-dc


Debian

  • Create the /etc/init.d/samba-ad-dc file with the following content:

(Originally downloaded from "http://anonscm.debian.org/gitweb/?p=pkg-samba/samba.git;a=blob_plain;f=debian/samba.samba-ad-dc.init;h=3132d2e367675f822342a5b7bc2e50c046aa3b8f;hb=HEAD" but has since been removed 

#! /bin/sh

### BEGIN INIT INFO
# Provides:          samba-ad-dc
# 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
# Short-Description: start Samba daemons for the AD DC
### END INIT INFO

#
# Start/stops the Samba daemon (samba).
# Adapted from the Samba 3 packages.
#

PIDDIR=/usr/local/samba/var/run
SAMBAPID=$PIDDIR/samba.pid

# clear conflicting settings from the environment               
unset TMPDIR

# See if the daemon and the config file are there
test -x /usr/local/samba/sbin/samba -a -r /usr/local/samba/etc/smb.conf || exit 0

. /lib/lsb/init-functions

case "$1" in
        start)
                SERVER_ROLE=`/usr/local/samba/bin/samba-tool testparm --parameter-name="server role"  2>/dev/null | tail -1`
                if [ "$SERVER_ROLE" != "active directory domain controller" ]; then
                    exit 0
                fi

                if init_is_upstart; then
                        exit 1
                fi

                # CVE-2013-4475
                KEYFILE=/var/lib/samba/private/tls/key.pem
                if [ -e $KEYFILE ]
                then
                                KEYPERMS=`stat -c %a $KEYFILE`
                                if [ "$KEYPERMS" != "600" ]
                                then
                                                echo "wrong permission on $KEYFILE, must be 600"
                                                echo "samba will not start (CVE-2013-4475)"
                                                echo "Removing all tls .pem files will cause an auto-regeneration with the correct permissions."
                                                exit 1
                                fi
                fi

                log_daemon_msg "Starting Samba AD DC daemon" "samba"
                # Make sure we have our PIDDIR, even if it's on a tmpfs
                install -o root -g root -m 755 -d $PIDDIR

                if ! start-stop-daemon --start --quiet --oknodo --exec /usr/local/samba/sbin/samba -- -D; then
                        log_end_msg 1
                        exit 1
                fi

                log_end_msg 0
                ;;
        stop)
                if init_is_upstart; then
                        exit 0
                fi
                log_daemon_msg "Stopping Samba AD DC daemon" "samba"

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

                log_end_msg 0

                ;;
        restart|force-reload)
                if init_is_upstart; then
                        exit 1
                fi
                $0 stop
                sleep 1
                $0 start
                ;;
        status)
                status_of_proc -p $SAMBAPID /usr/local/samba/sbin/samba samba
                exit $?
                ;;
        *)
                echo "Usage: /etc/init.d/samba-ad-dc {start|stop|restart|force-reload|status}"
                exit 1
                ;;
esac

exit 0
  • If necessary, update the locations to the samba service, the samba-tool utility, and the smb.conf file in the /etc/init.d/samba-ad-dc file.
  • Make the script executable:
# chmod 755 /etc/init.d/samba-ad-dc

Managing the Samba AD DC Service

The following assumes that the Samba Active Directory (AD) domain controller (DC) service is managed by the /etc/init.d/samba-ad-dc init script. If you have not created the script manually, see your operating system's documentation for the name of the Samba AD DC service.


Enabling and Disabling the Samba AD DC Service

To enable the Samba Active Directory (AD) domain controller (DC) service to start automatically when the system boots, enter: 

# chkconfig samba-ad-dc enable

To disable the automatic start of the Samba AD DC service, enter: 

# chkconfig samba-ad-dc disable


Manually Starting and Stopping the Samba AD DC Service

To manually start the Samba Active Directory (AD) domain controller (DC) service, enter: 

# service start samba-ad-dc

To manually stop the Samba AD DC service, enter: 

# service stop samba-ad-dc
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