I don't know if anyone else is running Heartbeat/Pacemaker on an Egenera
BladeFrame, but if they are, these scripts might be useful to help set up
stonith.
The Egeneras use an IPMI arrangement to control the various processor
blades, and these routines take advantage of that.
This may not be the best method of doing it, but it does appear to work.
It is not fast. What it lacks in speed, however, it makes up for in
flexibility. It can figure out which c-blade is the master, and then figure
out which p-blade is running the server to be stonithed, and then stonith,
it. The framework for this was an existing external stonith script that I
simply modified to meet my needs.
The two short shell scripts at the top need to live in /root/bin/ on both
control blades. The cluster servers need to have ssh keys and any required
firewall rules setup such that root on the cluster servers can ssh to the
c-blades.
If anyone else is already doing this and has a better way, I'd be happy to
hear about it.
Karl
### THESE TWO SHELL SCRIPTS ARE EXPECTED IN /root/bin ON BOTH c-blades
### THAT WAY THE SCRPIT THAT FOLLOWS WILL WORK REGARDLESS OF WHICH
### EGENERA c-blade IS PAN-MASTER
#!/bin/bash
# get_master.sh - returns the name of the master control blade in the
PAN.
MASTER=`/opt/panmgr/bin/esh pan | grep ^c | grep Master | cut -c 2`
echo "cblade-${MASTER}"
#CUT HERE #############################################################
#!/bin/bash
# get_processor_blade.sh - identifies the blade running a given pserver.
BLADE=`/opt/panmgr/bin/esh pan | grep ^${1}`
echo ${BLADE} | sed -e "s/^.*MyBladeFrame\/\(.\)\(.\) .*/a\1-\2/"
#CUT HERE #############################################################
#!/bin/bash
#
# External STONITH module for Egenera.
#
# Copyright (c) 2004 SUSE LINUX AG - Lars Marowsky-Bree <[email protected]>
# Copyright (c) 2009 Karl W. Lewis <[email protected]>
# This program is free software; you can redistribute
#it and/or modify # it under the terms of version 2 of the GNU General
#Public License as # published by the Free Software Foundation.
#
# This program is distributed in the hope that it would be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
#
# Further, this software is distributed without any warranty that it is
# free of the rightful claim of any third person regarding infringement
# or the like. Any license provided herein, whether implied or
# otherwise, applies only to this software file. Patent licenses, if
# any, provided herein do not apply to combinations of this program with
# other software, or any other product whatsoever.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write the Free Software Foundation,
# Inc., 59 Temple Place - Suite 330, Boston MA 02111-1307, USA.
#
SSH_COMMAND="/usr/bin/ssh"
#LOG=/var/log/egenera-stonith.log
#echo `date` >> $LOG
#echo $hostlist >> $LOG
#echo $1 >> $LOG
#echo $2 >> $LOG
#echo "executing--------------" >> $LOG
# Rewrite the hostlist to accept "," as a delimeter for hostnames too.
hostlist=`echo $hostlist | tr ',' ' '`
is_host_up() {
for j in 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
do
if
ping -w1 -c1 "$1" >/dev/null 2>&1
then
sleep 10
else
return 1
fi
done
return 0
}
MASTER_BLADE=`$SSH_COMMAND cblade-1 "bin/get_master.sh" | tail -1`
case $1 in
gethosts)
for h in $hostlist ; do
echo $h
done
exit 0
;;
on)
for h in $hostlist
do
if
[ "$h" != "$2" ]
then
continue
else
P_BLADE=`$SSH_COMMAND $MASTER_BLADE "bin/get_processor-blade.sh
$h"`
$SSH_COMMAND $MASTER_BLADE "echo 'please' >
/proc/egenera/ipmi/node/$P_BLADE/control/on"
fi
sleep 30
if
is_host_up $h
then
exit 1
else
exit 0
fi
done
exit 0
;;
off)
for h in $hostlist
do
if
[ "$h" != "$2" ]
then
continue
else
P_BLADE=`$SSH_COMMAND $MASTER_BLADE "bin/get_processor-blade.sh
$h"`
$SSH_COMMAND $MASTER_BLADE "echo 'please' >
/proc/egenera/ipmi/node/$P_BLADE/control/off"
fi
done
exit 0
;;
reset)
for h in $hostlist
do
if
[ "$h" != "$2" ]
then
continue
else
P_BLADE=`$SSH_COMMAND $MASTER_BLADE "bin/get_processor-blade.sh
$h"`
$SSH_COMMAND $MASTER_BLADE "echo 'please' >
/proc/egenera/ipmi/node/$P_BLADE/control/nmi"
fi
sleep 20
if
is_host_up $h
then
exit 1
else
exit 0
fi
done
exit 1
;;
status)
if
[ -z "$hostlist" ]
then
exit 1
fi
for h in $hostlist
do
if
ping -w1 -c1 "$h" 2>&1 | grep "unknown host"
then
exit 1
fi
done
exit 0
;;
getconfignames)
echo "hostlist"
exit 0
;;
getinfo-devid)
echo "Egenera STONITH device"
exit 0
;;
getinfo-devname)
echo "Egenera STONITH external device"
exit 0
;;
getinfo-devdescr)
echo "Egenera-based Linux host reset"
exit 0
;;
getinfo-devurl)
echo "http://www.egenera.com";
exit 0
;;
getinfo-xml)
cat << EGENERAXML
<parameters>
parameter name="hostlist" unique="1" required="1"> <contenttype="string" />
<shortdesc lang="en"> Hostlist </shortdesc>
<longdesc lang="en"> The list of hosts that the STONITH device controls
</longdesc>
</parameter>
</parameters>
EGENERAXML
exit 0
;;
*)
exit 1
;;
esac
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