Comment 18 for bug 1287964

If you're blocked by this issue, you can workaround it by editing /etc/maas/templates/power/ipmi.template to add use of -W opensesspriv. I've tested this on a handful of systems that don't require the workaround and it seems to work fine everywhere so far.

=== modified file 'etc/maas/templates/power/ipmi.template'
--- etc/maas/templates/power/ipmi.template 2014-02-26 07:05:31 +0000
+++ etc/maas/templates/power/ipmi.template 2014-03-05 23:12:24 +0000
@@ -55,9 +55,9 @@
     fi

     echo workaround |\
- ${ipmi_chassis_config} ${driver_option} -h ${power_address} -u ${power_user} -p ${power_pass} --commit --filename ${config}
+ ${ipmi_chassis_config} -W opensesspriv ${driver_option} -h ${power_address} -u ${power_user} -p ${power_pass} --commit --filename ${config}
     echo workaround |\
- ${ipmipower} ${driver_option} -h ${power_address} -u ${power_user} -p ${power_pass} "$@"
+ ${ipmipower} -W opensesspriv ${driver_option} -h ${power_address} -u ${power_user} -p ${power_pass} "$@"
 }

 # This script deliberately does not check the current power state