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|
#!/usr/bin/perl
#
# Monitor diskspace via SNMP
# (based on process.monitor by Brian Moore)
#
# Originally written by SATOH Fumiyasu <fumiya@samba.gr.jp>.
# Modified Oct 2001 by Dan Urist <durist@world.std.com>
# Changes: added usage, SNMP v.3 support, -T threshold option and
# unique-ified errors
#
# Usage:
# [-h] # Usage
# [-t Timeout] # Timeout in ms (default: 1000000)
# [-r Retries] # Retries before failure (default: 5)
# [-v SNMPversion] # 1,2,2c or 3 (default: 1)
# [-c Community] # For SNMP v.1,2,2c (default: public)
# [-u snmpuser] # For SNMP v.3 (default: initial)
# [-l seclevel] # For SNMP v.3 (default: noAuthNoPriv)
# [-A authpassphrase] # For SNMP v.3
# [-T threshold] # If a disk threshold is given, the script
# # will exit with the value of the highest
# # disk percentage found that is over the
# # threshold; if no disks are over the threshold
# # it will exit with value 0, and it will exit
# # with value 2 for SNMP error
# host [host ...]
#
#
# This script will exit with value 1 if host:community has dskErrorFlag
# set. The summary output line will be the host names that failed
# and the disk information. The detail lines are what UCD snmp returns
# for an dskErrMessage. ('/filesystem: less than WATERMARK free (= CURRENT)').
# If there is an SNMP error (either a problem with the SNMP libraries,
# or a problem communicating via SNMP with the destination host),
# this script will exit with a warning value of 2.
#
# If the -T threshold option is used, the script will exit with the
# highest disk percentage found that is over the threshold. The intent
# is to allow use with mon's "alert exit=value" parameter to allow for
# finer-grained alerts based on disk usage. If no disks are over the
# threshold, the script will exit with value 0; if an SNMP error
# occurs (and there are no other errors), the script will exit with
# value 2.
#
# Copyright (C) 2001 SATOH Fumiyasu <fumiya@samba.gr.jp>
#
# 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 2 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, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#
use SNMP;
use Getopt::Std;
$ENV{'MIBS'} = "UCD-SNMP-MIB";
getopts("ht:r:v:c:u:l:A:T:");
my $VERSION = "0.1";
if( $opt_h || (scalar @ARGV == 0) ){
print <<"USAGE";
$0 Version $VERSION; original version by SATOH Fumiyasu <fumiya@samba.gr.jp>,
SNMP v.3 support by Daniel J. Urist <durist\@world.std.com>.
Usage:
[-h] # Usage
[-t Timeout] # Timeout in ms (default: 1000000)
[-r Retries] # Retries before failure (default: 5)
[-v SNMPversion] # 1,2,2c or 3 (default: 1)
[-c Community] # For SNMP v.1,2,2c (default: public)
[-u snmpuser] # For SNMP v.3 (default: initial)
[-l seclevel] # For SNMP v.3 (default: noAuthNoPriv)
[-A authpassphrase] # For SNMP v.3
[-T threshold] # If a disk threshold is given, the script will exit
# with the value of the highest disk percentage found
# that is over the threshold; if no disks are over the
# the threshold it will exit with value 0, and it will
# exit with value 2 for SNMP error
host [host ...]
USAGE
exit;
}
# FIXME we should probably offer all the v3 options that the SNMP module does
my $Timeout = $opt_t || 1000000;
my $Retries = $opt_r || 5;
my $SNMPVersion = $opt_v || 1;
my $Community = $opt_c || 'public';
my $SecName = $opt_u || 'initial';
my $SecLevel = $opt_l || 'noAuthNoPriv';
my $Authpass = $opt_A || '';
my $Threshold = $opt_T if defined($opt_T);
my %SNMPARGS = (
Timeout => $Timeout,
Version => $SNMPVersion,
);
if ($SNMPVersion eq "3"){
$SNMPARGS{SecName} = $SecName;
$SNMPARGS{SecLevel} = $SecLevel;
$SNMPARGS{AuthPass} = $Authpass;
}
else{
$SNMPARGS{Community} = $Community;
}
my $RETVAL = 0;
my %Failures;
my %Longerr;
my $Session;
foreach $host (@ARGV) {
$Session = new SNMP::Session(
DestHost => $host,
%SNMPARGS,
);
unless( defined($Session) ) {
$RETVAL = 2 if $RETVAL == 0; # Other errors take precedence over SNMP error
$Failures{"$host session error"} = "";
$Longerr{"$host could not get SNMP session"} = "";
next;
}
my $v = new SNMP::Varbind (["dskIndex"]);
$Session->getnext ($v);
while (!$Session->{"ErrorStr"} && $v->tag eq "dskIndex") {
my @q = $Session->get ([
["dskPath", $v->iid], # 0
["dskDevice", $v->iid], # 1
["dskMinimum", $v->iid], # 2
["dskMinPercent", $v->iid], # 3
["dskTotal", $v->iid], # 4
["dskAvail", $v->iid], # 5
["dskUsed", $v->iid], # 6
["dskPercent", $v->iid], # 7
["dskPercentNode", $v->iid],# 8
["dskErrorFlag", $v->iid], # 9
["dskErrorMsg", $v->iid], # 10
]);
last if ($Session->{"ErrorStr"});
if( defined $Threshold ){
if($q[7] > $Threshold){
$RETVAL = $q[7] if $q[7] > $RETVAL;
my ($t, $u, $a) = map { int($_/1024) } @q[4, 6, 5];
$Failures{$host} = "";
$Longerr{"$host:$q[0]($q[1]) total=$t used=$u($q[7]%) free=$a threshold=$Threshold%"} = "";
}
}
elsif ($q[9] > 0) {
$RETVAL = 1;
my ($t, $u, $a) = map { int($_/1024) } @q[4, 6, 5];
$Failures{$host} = "";
$Longerr{"$host:$q[0]($q[1]) total=$t used=$u($q[7]%) free=$a err=$q[10]"} = "";
}
$Session->getnext ($v);
}
if ($Session->{"ErrorStr"}) {
$RETVAL = 2 if $RETVAL == 0; # Other errors take precedence over SNMP error
$Failures{$host} = "";
$Longerr{"$host returned an SNMP error: " . $Session->{"ErrorStr"}} = "";
}
}
if (scalar keys %Failures) {
print join (", ", sort keys %Failures), "\n", "\n";
print join ("\n", sort keys %Longerr), "\n";
}
exit $RETVAL;
|
