On 9 Aug 2007, at 20:52, Dave Shield wrote:
Hey guys,
> Your pass script should check how it is being invoked - whether
> this is
> part of a GET request ("mysql-jbpm-test.sh -g OID"), or as part of a
> GETNEXT request ("mysql-jbpm-test.sh -n OID").
> Similarly, it should check the OID that it is given as part of this
> command, and how this compares to the OID(s) that it implements.
>
> Assuming the script only supports a single MIB value (e.g. a scalar
> object), then for a GETNEXT request for any OIDs *before* the sole
> valid OID, it should return the OID/type/value triplet (as you do).
> But a GETNEXT request for the OID .1.3.6.1.4.1.4914.1.1 or
> later, then your script should exit without printing anything at all.
> The agent can then move on to the next module in the tree.
That all makes absolute sense, thanks for that. I believe I've
implemented this correctly, however snmpwalk still misses it.. My
script now looks as follows:
=====================
#!/bin/sh
THING=`/usr/bin/mysql --batch --password=notarealpassword -u root
coreJbpm --execute='s
elect count(*) from JBPM_LOG;'|grep -v count`
if [ $1 == -g ]; then
echo ".1.3.6.1.4.1.4914.1.1"
echo "integer"
echo $THING
exit
fi
if [ $1 == -n ]; then
ENTOID1=`echo $2 | awk -F"." '{print $8}'`
ENTOID2=`echo $2 | awk -F"." '{print $9}'`
ENTOID3=`echo $2 | awk -F"." '{print $10}'`
if [ "$ENTOID1" -gt "4914" ]; then
exit
fi
if [ "$ENTOID1" -lt "4914" ]; then
echo ".1.3.6.1.4.1.4914.1.1"
echo "integer"
echo $THING
elif [ "$ENTOID2" -eq "0" ] ; then
echo ".1.3.6.1.4.1.4914.1.1"
echo "integer"
echo $THING
elif [ "$ENTOID2" -eq "1" ] && [ "$ENTOID3" -eq "0" ]; then
echo ".1.3.6.1.4.1.4914.1.1"
echo "integer"
echo $THING
fi
fi
===================
And it is called from the snmpd.conf as follows:
pass .1.3.6.1.4.1.4914.1.1 /etc/snmp/mysql-jbpm-test.sh
My MIB file is written as follows (and compiles ok)
===================
HOLE-IN-THE-NET-MIB DEFINITIONS ::= BEGIN
-- HOLE-IN-THE-NET.mib - Mib for custom monitoring developed by Joe
Warren-Meeks
IMPORTS
MODULE-IDENTITY, enterprises, mib-2
FROM SNMPv2-SMI,
DisplayString
FROM RFC1213-MIB
MODULE-COMPLIANCE, OBJECT-GROUP
FROM SNMPv2-CONF,
OBJECT-TYPE
FROM RFC-1212;
hole-in-the-net MODULE-IDENTITY
LAST-UPDATED "2007080901Z"
ORGANIZATION "hole-in-the-net"
CONTACT-INFO
"email: [EMAIL PROTECTED]"
DESCRIPTION
"MIB tree for tailored application monitoring
Written by Joe Warren-Meeks"
REVISION "2007080901Z"
DESCRIPTION
"First draft"
::= { enterprises 4914 }
mysqlJbpm OBJECT IDENTIFIER ::= { hole-in-the-net 1 }
rowCount OBJECT-TYPE
SYNTAX INTEGER
ACCESS read-only
STATUS current
DESCRIPTION
"Number of rows in the Jbpm-log table."
::= { mysqlJbpm 1 }
END
==================
And snmpget works as follows:
joe-warren-meeks-computer:~ joe$ snmpget -mALL -v2c -c
acommunitystring 192.168.1.1 enterprises.hole-in-the-
net.mysqlJbpm.rowCount
HOLE-IN-THE-NET-MIB::rowCount = INTEGER: 50917
But snmpwalk still fails as follows:
joe-warren-meeks-computer:~ joe$ snmpwalk -mALL -v2c -c
acommunitystring 192.168.1.1 enterprises.hole-in-the-net
HOLE-IN-THE-NET-MIB::hole-in-the-net = No Such Object available on
this agent at this OID
Any clues? Have I messed up my MIB?
Sorry chaps, once I get past this bit I should be away and not bother
you :-)
-- joe.
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