Re: [BackupPC-users] Wake-on-LAN setup

I took a slightly different approach. The ping replacement script is called with 1 argument (the hostname) for ping, or 2 arguments hostname MAC_address for wol. It means putting the mac address in $conf{PingCmd} for hosts that need wol rather than in a separate file like Michael uses.

My default PingCmd is:

$Conf{PingCmd} = '$pingPath $host'

On WOL hosts I over ride it with:

$Conf{PingCmd} = '$pingPath $host <mac_address>'

where <mac_address> is replaced with the actual value for that host.

My script is messy since I did home-rolled wake-on-lan with xxd and netcat. That avoided installing wakeonlan as an extra dependency on FreeBSD. If you already have wakeonlan you'd want to change the script to use that instead of xxd.

WOL of course needs to be configured on the windows machines, possibly in bios as well as in windows. I'd test that from the command line before putting it into backuppc.

RP

The script:

#!/bin/sh
# BackupPC_pingwol
# Ping replacement for use with BackupPC that sends optional wake on lan packets
# Russ Poyner 9/8/2014

PATH="/sbin:/bin:/usr/bin:/usr/local/bin"
export PATH

# No wol by default
wakeme=

# Send wol with xxd.
# Best re-write this to use linux wakeonlan if you have it.
wol()
{
    # Convert the wol packet to binary with xxd
    # and send it to the client through netcat.
        echo "Sending wake on lan packet to $hostname at $cleanmac"
        echo $packet | xxd -r -p | nc -w 1 -v -u $hostname 9
}

# Minimal argument parsing
if [ "$#" = "2" ]
then
    wakeme="yes"
    hostname=$1
    # Construct the wol packet in hexadecimal
    cleanmac=`echo $2 | sed -r 's/:|-//g' | tr '[:lower:]' '[:upper:]'`
    # Next 2 lines not needed if you use a real wakeonlan utility
    mac4="${cleanmac}${cleanmac}${cleanmac}${cleanmac}"
    packet="FFFFFFFFFFFF${mac4}${mac4}${mac4}${mac4}"
elif [ "$#" = "1" ]
then
    hostname=$1
else
    echo "Usage:"
    echo "$0 hostname [mac address]"
    echo "Including the mac address will cause $0 to send WOL packets"
    echo "if the host doesn't answer the first ping"
fi

ping -qc 1 $hostname
ret=$?
if [ "$ret" != "0" -a "$wakeme" = "yes" ]
then
    for n in $(seq 1 15)
    do
        wol
        ping -qc 1 $hostname
        ret=$?
        if [ "$ret" = "0" ]
        then
            exit 0
        fi
    done
fi
exit $ret

On 03/06/2015 12:07 AM, Russ Russ wrote:

Dear all,

Any ideas/assistance will be highly appreciated.

I have backuppc server on Gentoo which works fine with regular client backups. Now I am configuring wake-on-lan to wake windows clients up before backup.

The following has been done:

1.       Bash script has been a bit modified from the one suggested on this forum (details of the current script are provided at the end of the message).

2.       Config.pl has been modified on server as the following:

$Conf{PingPath} = '/usr/local/bin/wolping.sh';

$Conf{NmbLookupFindHostCmd} = ' ';

3.       Appropriate 777 rights have been granted to wolping.sh. This is output of ls –l:

-rwxrwxrwx 1 backuppc backuppc 1246 12:00 wolping.sh

4.       I have tested wolping.sh and it works great from terminal under backuppc user

But when I fire manual backup on any client which is in standby mode, I got the following message: “2015-03-06 11:29:14 no ping response”

Seems that backuppc does not even fire the script as “logger”   does not appear in tail -f /var/log/messages

Could you please advise what might cause such an issue

Many thanks

wolping.sh:

----------------------------------------------------------------------

#!/bin/bash

#this script is totally designed for the backuppc ping command

#which is the first thing it does before it starts a backup

#this is a substitute which pings the machine, if it is not

#awake then it wakes it using a magic packet - using the wol.bsh script

#then pings again to make sure

PING=/bin/ping

ARG1=$1

ARG2=$2

ARG3=$3

ARG4=$4

WAKEHOST=$5

ETHWAKE="/sbin/ether-wake -i enp3s0"

SLEEPTIME=3m

logger "Backuppc pinging $1 $2 $3 $4 $5"

function fwol {

        TO_WAKEUP=$1

        sudo $ETHWAKE $1

        if [ $? -eq 0 ]

        then

           WOL_RES="OK"

        else

           WOL_RES="FAIL"

        fi

}

$PING $ARG1 $ARG2 $ARG3 $ARG4 $WAKEHOST >>/dev/null 2>&1

if [ $? -ne 0 ]; then

        fwol $WAKEHOST

        if [ "$WOL_RES" = "FAIL" ]; then

                exit 1

        fi

        sleep $SLEEPTIME

        $PING $ARG1 $ARG2 $WAKEHOST

        if [ $? -eq 0 ]

        then

           logger "success waking $WAKEHOST."

        else

           logger "unable to wake $WAKEHOST."

           exit 1

        fi

else

   $PING $ARG1 $ARG2 $ARG3 $ARG4 $WAKEHOST

fi

exit 0
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------------------------------------------------------------------------------
Dive into the World of Parallel Programming The Go Parallel Website, sponsored
by Intel and developed in partnership with Slashdot Media, is your hub for all
things parallel software development, from weekly thought leadership blogs to
news, videos, case studies, tutorials and more. Take a look and join the 
conversation now. http://goparallel.sourceforge.net/

_______________________________________________
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BackupPC-users AT lists.sourceforge DOT net
List:    https://lists.sourceforge.net/lists/listinfo/backuppc-users
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Project: http://backuppc.sourceforge.net/

Re: [BackupPC-users] Wake-on-LAN setup - no ping response