zz-hibernate

#!/bin/bash
#
# zz-hibernate - Script to shutdown machine when idle
#
# The following variables can be set in /etc/sysconfig/idle:
#
#   COMMAND - The command to run to shutdown, defaults to pm-hibernate 
#   GRIDONLY - If set to true, only use the presence or absence of grid jobs
# to determine if the machine should get shut down
#   BLACKLISTED_PROCESSES - Space separated list of process that if running
# will prevent the machine from being shut down
#
# Copyright (C) 2012 Orion Poplawski <orion@cora.nwra.com>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.
# 
exec > /var/log/zz-hibernate 2>&1
#set -x
# Defaults
maxidle=7200  # 2 hours

#Default
COMMAND=pm-hibernate

# Config
[ -f /etc/sysconfig/idle ] && . /etc/sysconfig/idle

#Sleep to avoid hourly jobs
sleep 600

if [ "$GRIDONLY" == yes ]
then
   # We only run grid jobs
   # - no yum process
   [ -z "`find /var/spool/gridengine -name pid`" -a -z "`ps -e | grep yum`" ] && $COMMAND
fi

# Calculate console idle time
if [ -c /dev/tty7 ]; then
   kbdtime7=`stat -c '%X' /dev/tty7`
   kbdtime8=`stat -c '%X' /dev/tty8`
   if [ "$kbdtime7" -gt "$kbdtime8" ]; then
      kbdtime=$kbdtime7
   else
      kbdtime=$kbdtime8
   fi
else
   kbdtime=0
fi

#This doesn't appear to be working anymore
if [ -c /dev/input/mice ]; then
   mousetime=`stat -c '%X' /dev/input/mice`
else
   mousetime=0
fi

now=`date +%s`

if [ "$kbdtime" -gt "$mousetime" ]; then
   idletime=`expr "$now" - "$kbdtime"`
else
   idletime=`expr "$now" - "$mousetime"`
fi

#Idle times
eval `w -hs | while read user tty from idle what
do
   if [ $idle = ${idle/[0-9]/} ]
   then
      continue
   elif [ $idle != ${idle/dm/} ]
   then
      continue
   elif [ $idle != ${idle/days/} ]
   then
      idle=$((${idle/days/} * 3600 * 24))
   elif [ $idle != ${idle/s/} ]
   then
      idle=$((${idle/.00s/}))
   elif [ $idle != ${idle/m/} ]
   then
      #Minutes
      idle=${idle/m/}
      idle=$((${idle/:*/} * 3600 + 10#${idle/*:/} * 60))
   else
      idle=$((${idle/:*/} * 60 + 10#${idle/*:/}))
   fi

   if [ "$idle" -lt $idletime ]
   then
      idletime=$idle
      echo idletime=$idle
   fi
done`

#Blacklisted processes
blacklist=
if [ -n "$BLACKLISTED_PROCESSES" ]
then
   for prog in $BLACKLISTED_PROCESSES
   do
       if [ `ps -C $prog | wc -l` -gt 1 ]
       then
          blacklist="$blacklist $prog"
       fi
   done
fi

# Shutdown if:
# - load average is low
# - no one logged in
# - there are no running jobs
# - no yum process
# - no blacklisted processes
[ -z "`awk '$1 > 0.07 || $2 > 0.07' /proc/loadavg`" -a \
  -z "`find /var/spool/gridengine -name pid`" -a \
  -z "`w -hs`" -a \
  -z "`ps -e | grep yum`" -a \
  -z "$blacklist" ] &&
  mv /var/log/zz-hibernate /var/log/zz-shutdown &&
  /sbin/shutdown -h now

# Hibernate if:
# - load average is low
# - terminal sessions all idle for at least 24 hours
# - there are no running jobs
# - no console activity for 2 hours with someone logged in
# - no yum process
# - no blacklisted processes
[ -z "`awk '$1 > 0.07 || $2 > 0.07' /proc/loadavg`" -a \
  -z "`find /var/spool/gridengine -name pid`" -a \
  \( -z "`w -hs`" -o "$idletime" -gt "${maxidle}" \) -a \
  -z "`ps -e | grep yum`" -a \
  -z "$blacklist" ] &&
  mv /var/log/zz-hibernate /var/log/zz-hibernate.sleep &&
  $COMMAND