Steps are required.
1. download VMWare CLI https://my.vmware.com/group/vmware/details?downloadGroup=VCLI550&productId=352
2.
Download check_megaraid_sas @ http://www.techno-obscura.com/~delgado/code/check_megaraid_sas
a change has to be made in the script to make it report correctly:
on line 144, change
if ( m/Size\s*:\s*((\d+\.?\d*)\s*(MB|GB|TB))/ ) {
to
if ( m/^Size\s*:\s*((\d+\.?\d*)\s*(MB|GB|TB))/ ) {
Copy both MegaCli and check_megaraid_sas to your vmware host
copy MegaCli /usr/bin/
chmod +x check_megaraid_sas
copy check_megaraid_sas /usr/share/snmp/
3. test that it’s working
Now check your megaraid controller from the command line-
/usr/share/snmp/check_megaraid_sas -s (num of spares)
from a good system, you should get:
/usr/share/snmp/check_megaraid_sas -s 3
OK: 0:0:RAID-5:3 drives:271.899GB:Optimal 0:1:RAID-1:2 drives:135.899GB:Optimal 0:2:RAID-1:2 drives:135.899GB:Optimal 0:3:RAID-5:3 drives:271.899GB:Optimal 0:4:RAID-5:3 drives:271.898GB:Optimal 0:5:RAID-5:8 drives:951.794GB:Optimal Drives:24 Hotspare(s):3
a system starting to have trouble:
/usr/share/snmp/check_megaraid_sas -s 3
WARNING: 0:0:RAID-5:3 drives:271.945GB:Optimal 0:1:RAID-1:2 drives:135.972GB:Optimal 0:2:RAID-1:2 drives:135.972GB:Optimal 0:3:RAID-5:3 drives:271.945GB:Optimal 0:4:RAID-5:3 drives:271.945GB:Optimal 0:5:RAID-5:8 drives:951.808GB:Optimal Drives:23 Hotspare(s):2 (of 3)
(yes I know, raid5 bad bad bad, tell that to the customer who insists on it…)
4.
now to edit /etc/snmp/snmpd.conf
In the section called : Access Control
scroll down until you find “Third, create a view for use to let the group have rights to:
you’ll need to add
view systemview included .1.3.6.1.4.1.6876.99999
now scroll down until you find: Executable/scripts
Add in
exec .1.3.6.1.4.1.6876.99999.2 check_megaraid_sas /usr/share/snmp/check_megaraid_sas -s 3
note, the -s shows how many active spares you have assigned! if any are missing, that’s usually a sign of a problem…
now, save and restart snmpd
service snmpd restart
now, from nagios machine:
snmpwalk -v 1 -c public <HOSTNAME or IP> .1.3.6.1.4.1.6876.99999
this will walk through (and hopefully) display the output of your script. if it works, you should wind up with:
SNMPv2-SMI::enterprises.6876.99999.2.1.1 = INTEGER: 1
SNMPv2-SMI::enterprises.6876.99999.2.2.1 = STRING: “check_megaraid_sas”
SNMPv2-SMI::enterprises.6876.99999.2.3.1 = STRING: “/usr/share/snmp/check_megaraid_sas -s 3”
SNMPv2-SMI::enterprises.6876.99999.2.100.1 = INTEGER: 0
SNMPv2-SMI::enterprises.6876.99999.2.101.1 = STRING: “OK: 0:0:RAID-5:3 drives:271.899GB:Optimal 0:1:RAID-1:2 drives:135.899GB:Optimal 0:2:RAID-1:2 drives:135.899GB:Optimal 0:3:RAID-5:3 drives:271.899GB:Optimal 0:4:RAID-5:3 drives:271.898GB:Optimal 0:5:RAID-5:8 drives:951.794GB:Optimal Drives:24 Hotspare(s):3”
SNMPv2-SMI::enterprises.6876.99999.2.102.1 = INTEGER: 0
SNMPv2-SMI::enterprises.6876.99999.2.103.1 = “”
5.
First part done! *whew*
Now to pull this into nagios!
you’ll notice from this part of the reply, that the only thing we really care about is
SNMPv2-SMI::enterprises.6876.99999.2.101.1 = STRING: “OK: 0:0:RAID-5:3 drives:271.899GB:Optimal 0:1:RAID-1:2 drives:135.899GB:Optimal 0:2:RAID-1:2 drives:135.899GB:Optimal 0:3:RAID-5:3 drives:271.899GB:Optimal 0:4:RAID-5:3 drives:271.898GB:Optimal 0:5:RAID-5:8 drives:951.794GB:Optimal Drives:24 Hotspare(s):3”
This is the output of your script. you’ll need to have something else to pull that in!
First thing is to create the command for nagios to use:
I store mine in a file under /etc/nagios-plugins/config/check_megaraid_snmp.cfg
cat check_megaraid_snmp.cfg
# ‘check_megaraid_snmp’ command definition
define command{
command_name check_megaraid_snmp
command_line /usr/lib/nagios/plugins/check_megaraid_snmp $HOSTADDRESS
}
save and close it.
check the script for correctness by running
/usr/sbin/nagios3 -v /etc/nagios3/nagios.cfg
If you get an answer of: Things look okay – blah blah blah, then go onto the next step
The script! you’ll notice we named it check_megaraid_snmp above, so let’s create the file now
vi /usr/lib/nagios/plugins/check_megaraid_snmp (or whatever flavor of editor you prefer)
—–
#!/bin/sh
if [ $# -lt 1 ]; then
echo “Usage: $0 <host>”
exit -1
fi
HOST=$1
TMPFILE=`mktemp /tmp/check_megaraid_snmp.XXXXXX`
FOUND=`snmpget $HOST -c public -v 1 .1.3.6.1.4.1.6876.99999.2.101.1 | cut -d”\”” -f 2 > $TMPFILE 2>&1`
RES=$?
if [ $RES != 0 ]; then
cat $TMPFILE
/bin/rm -f $TMPFILE
exit 2
fi
STATUS=`cat $TMPFILE | cut -d”:” -f 1`
echo $STATUS
CHRS=`echo $STATUS | grep OK`
TESTVAL=$?
if [ $TESTVAL -eq 0 ]; then
#echo “OK!”
RETVAL=0
else
CHRS=`echo $STATUS | grep WARNING`
TESTVAL=$?
if [ $TESTVAL -eq 0 ]; then
#echo “Warning, something’s wrong”
RETVAL=1
else
CHRS=`echo $STATUS | grep CRITICAL`
TESTVAL=$?
if [ $TESTVAL -ne 0 ]; then
#echo “you’re screwed”
RETVAL=3
else
RETVAL=2
fi
fi
fi
#echo ‘end’
cat $TMPFILE
/bin/rm -f $TMPFILE
echo $RETSTR
#echo $RETVAL
exit $RETVAL
—-
*whew* that’s a mouthful. save it and close. recheck nagios, then restart it
Now for the final part! let’s add the command to your host check!
Inside the host file for your vm host, add this definition:
define service{
use generic-service ; Name of service template to use
host_name acpevmsqlhost01
service_description MegaRaid status
check_command check_megaraid_snmp
}
save, close, recheck nagios, restart
Now check your nagios site for status:
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