[Samba] ctdb do not start nmbd if serving AD

[steve]

ctdb 2.5.3 dual node file server with 4.1.9 serving AD domain

Hi
We have enabled the script at:
/etc/cdb/events.d/50.samba
but when we are the enabled node, it starts not only smbd but also nmbd.
This doesn't make sense in an AD domain. I've tried disabling nmbd
starting under openSUSE's systemd but ctdb overrides that, I've had a
look at the script but can't decipher the bit that starts nmbd.

Qn: Do we have a 'start smbd' version of 50.samba?

Or could any script guru get this to disable nmbd;)
Cheers and TIA,
Steve
Oh, and thanks for an amazing piece of software in ctdb.

#!/bin/sh
# ctdb event script for Samba

[ -n "$CTDB_BASE" ] || \
    export CTDB_BASE=$(cd -P $(dirname "$0") ; dirname "$PWD")

. $CTDB_BASE/functions

detect_init_style

case $CTDB_INIT_STYLE in
	suse)
		CTDB_SERVICE_SMB=${CTDB_SERVICE_SMB:-smb}
		CTDB_SERVICE_NMB=${CTDB_SERVICE_NMB:-nmb}
		;;
	debian)
		CTDB_SERVICE_SMB=${CTDB_SERVICE_SMB:-samba}
		CTDB_SERVICE_NMB=${CTDB_SERVICE_NMB:-""}
		;;
	*)
		# Use redhat style as default:
		CTDB_SERVICE_SMB=${CTDB_SERVICE_SMB:-smb}
		CTDB_SERVICE_NMB=${CTDB_SERVICE_NMB:-""}
		;;
esac

service_name="samba"

loadconfig

ctdb_setup_service_state_dir

service_start ()
{
    # make sure samba is not already started
    service "$CTDB_SERVICE_SMB" stop > /dev/null 2>&1
    if [ -n "$CTDB_SERVICE_NMB" ] ; then
	service "$CTDB_SERVICE_NMB" stop > /dev/null 2>&1
    fi
    killall -0 -q smbd && {
	sleep 1
	# make absolutely sure samba is dead
	killall -q -9 smbd
    }
    killall -0 -q nmbd && {
	sleep 1
	# make absolutely sure samba is dead
	killall -q -9 nmbd
    }

    # start Samba service. Start it reniced, as under very heavy load
    # the number of smbd processes will mean that it leaves few cycles
    # for anything else
    net serverid wipe

    if [ -n "$CTDB_SERVICE_NMB" ] ; then
	nice_service "$CTDB_SERVICE_NMB" start || die "Failed to start nmbd"
    fi

    nice_service "$CTDB_SERVICE_SMB" start || die "Failed to start
samba"
}

service_stop ()
{
    service "$CTDB_SERVICE_SMB" stop
    if [ -n "$CTDB_SERVICE_NMB" ] ; then
	service "$CTDB_SERVICE_NMB" stop
    fi
}

######################################################################
# Show the testparm output using a cached smb.conf to avoid delays due
# to registry access.

smbconf_cache="$service_state_dir/smb.conf.cache"

testparm_foreground_update ()
{
    _timeout="$1"

    if ! _out=$(timeout $_timeout testparm -v -s 2>/dev/null) ; then
	if [ -f "$smbconf_cache" ] ; then
	    echo "WARNING: smb.conf cache update failed - using old cache file"
	    return 1
	else
	    die "ERROR: smb.conf cache create failed"
	fi
    fi

    _tmpfile="${smbconf_cache}.$$"
    # Patterns to exclude...
    pat='^[[:space:]]+(registry[[:space:]]+shares|include|copy|
winbind[[:space:]]+separator)[[:space:]]+='    
    echo "$_out" | grep -Ev "$pat" >"$_tmpfile"
    mv "$_tmpfile" "$smbconf_cache" # atomic

    return 0
}

testparm_background_update ()
{
    _timeout="$1"

    testparm_foreground_update $_timeout >/dev/null 2>&1 </dev/null &
}

testparm_cat ()
{
    testparm -s "$smbconf_cache" "$@" 2>/dev/null
}

list_samba_shares ()
{
    testparm_cat |
    sed -n -e 's@^[[:space:]]*path[[:space:]]*=[[:space:]]@@p' |
    sed -e 's/"//g'
}

list_samba_ports ()
{
    testparm_cat --parameter-name="smb ports" |
    sed -e 's@,@ @g'
}

###########################

ctdb_start_stop_service

is_ctdb_managed_service || exit 0

###########################

case "$1" in
     startup)
	ctdb_service_start
	;;

     shutdown)
	ctdb_service_stop
	;;

     monitor)
	testparm_foreground_update 10
	ret=$?

	smb_ports="$CTDB_SAMBA_CHECK_PORTS"
	if [ -z "$smb_ports" ] ; then
	    smb_ports=$(list_samba_ports)
	    [ -n "$smb_ports" ] || die "Failed to set smb ports"
	fi
	ctdb_check_tcp_ports $smb_ports || exit $?

	if [ "$CTDB_SAMBA_SKIP_SHARE_CHECK" != "yes" ] ; then
	    list_samba_shares | ctdb_check_directories || exit $?
	fi

	if [ $ret -ne 0 ] ; then
	    testparm_background_update 10
	fi
	;;

    *)
	ctdb_standard_event_handler "$@"
	;;
esac

exit 0