I had a working power management for magic packets up until the most recent
update pushed through the EPEL repo to version 2.6.3. Now when I try to
remotely power on a machine, I get a message like this:
# cobbler system poweron --name=cf238
task started: 2014-08-12_151242_power
task started (id=Power management (on), time=Tue Aug 12 15:12:42 2014)
failed to execute power task on cf238
*** TASK COMPLETE ***
Unfortunately, this doesn't give me any information about what might be failing
and there is no additional information in the logs in /var/log/cobbler. My
power template looks like this (/etc/cobbler/power/fence_ether_wake.template):
fence_ether_wake "$power_address"
And the fence script in /usr/sbin/fence_ether_wake:
#!/bin/bash
#
# Fence script for executing ether-wake for remote power management
# usage: ether-wake -i <ifname> [-p aa:bb:cc:dd[:ee:ff]] 00:11:22:33:44:55
#
# This program generates and transmits a Wake-On-LAN (WOL)
# "Magic Packet", used for restarting machines that have been
# soft-powered-down (ACPI D3-warm state).
# It currently generates the standard AMD Magic Packet format, with
# an optional password appended.
#
# The single required parameter is the Ethernet MAC (station) address
# of the machine to wake or a host ID with known NSS 'ethers' entry.
# The MAC address may be found with the 'arp' program while the target
# machine is awake.
#
# Options:
# -b Send wake-up packet to the broadcast address.
# -D Increase the debug level.
# -i ifname Use interface.
# -p <pw> Append the four or six byte password PW to the
packet.
# A password is only required for a few
adapter types.
# The password may be specified in
ethernet hex format
# or dotted decimal (Internet address)
# -p 00:22:44:66:88:aa
# -p 192.168.1.1
#
while read line; do
if [ `echo $line | gawk -F"=" {'print $1'}` == "ipaddr" ]; then
power_address=`echo $line | gawk -F"=" {'print $2'}`
fi
done
interface="bond1"
# Starting remote computer
ether-wake -i $interface "$power_address"
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