#! /usr/bin/perl -w
# Check Diskspace via SNMP.
# Plugin uses UCD SNMP MIB (1.3.6.1.4.1.2021).
# Used in net-snmp packages on linux.
#
# Copyright (C) 2007 by Herbert Stadler
# email: hestadler@gmx.at
# License Information:
# 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 .
#
#
############################################################################
use POSIX;
use strict;
use Getopt::Long;
use lib ".";
use lib "/usr/lib/nagios/plugins";
use lib "/usr/lib64/nagios/plugins";
use lib "/usr/local/nagios/libexec";
use utils qw(%ERRORS);
use Net::SNMP qw(oid_lex_sort oid_base_match);
my ($opt_version,$opt_help,$opt_verbose);
my ($opt_timeout,$opt_license);
my ($opt_hostname,$opt_community,$opt_port,$opt_snmpvers);
my ($opt_username,$opt_authpasswd,$opt_authproto);
my ($opt_privpasswd,$opt_privproto);
my ($PROGNAME,$REVISION);
my ($state,$msg);
use constant DEFAULT_TIMEOUT =>15;
use constant DEFAULT_PORT =>161;
use constant DEFAULT_COMMUNITY =>"public";
use constant DEFAULT_SNMPVERS =>"2";
use constant DEFAULT_PRIVPROTO =>"DES";
use constant DEFAULT_AUTHPROTO =>"MD5";
# UCD SNMP MIB
my $dskTable ="1.3.6.1.4.1.2021.9";
my $dskEntry ="1.3.6.1.4.1.2021.9.1";
my $dskIndex_tabular ="1.3.6.1.4.1.2021.9.1.1";
my $dskPath_tabular ="1.3.6.1.4.1.2021.9.1.2";
my $dskDevice_tabular ="1.3.6.1.4.1.2021.9.1.3";
my $dskMinimum_tabular ="1.3.6.1.4.1.2021.9.1.4";
my $dskMinPercent_tabular ="1.3.6.1.4.1.2021.9.1.5";
my $dskTotal_tabular ="1.3.6.1.4.1.2021.9.1.6";
my $dskAvail_tabular ="1.3.6.1.4.1.2021.9.1.7";
my $dskUsed_tabular ="1.3.6.1.4.1.2021.9.1.8";
my $dskPercent_tabular ="1.3.6.1.4.1.2021.9.1.9";
my $dskPercentNode_tabular ="1.3.6.1.4.1.2021.9.1.10";
my $dskErrorFlag_tabular ="1.3.6.1.4.1.2021.9.1.100";
my $dskErrorMsg_tabular ="1.3.6.1.4.1.2021.9.1.101";
$ENV{'PATH'}='';
$ENV{'BASH_ENV'}='';
$ENV{'ENV'}='';
$PROGNAME = "check_disks_ucd";
$REVISION = "1.3";
# checking commandline arguments
my $arg_status = check_args();
if ($arg_status){
print "ERROR: some arguments wrong\n";
exit $ERRORS{"UNKNOWN"};
}
# set alarmhandler for timeout handling
$SIG{'ALRM'} = sub {
print ("ERROR: plugin timed out after $opt_timeout seconds \n");
exit $ERRORS{"UNKNOWN"};
};
alarm($opt_timeout);
# let's see if the server wants to speak with us
my ($snmp_session,$snmp_error)=open_snmp_session($opt_hostname);
if ( ! defined ($snmp_session)) {
print "ERROR: Could not open connection: $snmp_error \n";
exit $ERRORS{'UNKNOWN'};
}
$snmp_session->translate(['-endofmibview'=>0,'-nosuchobject'=>0,'-nosuchinstance'=>0]);
# get dskTable
my $p_dskTable=get_table ($dskTable);
$snmp_session->close;
if ( $opt_verbose ) {
print_dskTable ();
}
# set default values for program exit
$msg = "DISKS OK - No Problems found ";
$state = $ERRORS{'OK'};
my $l_tmsg;
foreach my $l_key (oid_lex_sort(keys(%$p_dskTable))){
if (!(oid_base_match($dskIndex_tabular,$l_key))) {
next;
}
my $l_val=$p_dskTable->{$l_key};
if ( $p_dskTable->{$dskErrorFlag_tabular.".".$l_val} == 1 ){
$state = $ERRORS{'CRITICAL'};
create_msg($p_dskTable->{$dskErrorMsg_tabular.".".$l_val},\$l_tmsg);
}
}
if ($state == $ERRORS{'WARNING'}){
$msg = "DISKS WARNING - ".$l_tmsg;
}elsif ($state == $ERRORS{'CRITICAL'}){
$msg = "DISKS CRITICAL - ".$l_tmsg;
}
# and now "over and out"
print "$msg\n";
exit $state;
#--------------------------------------------------------------------------#
# S U B R O U T I N E S #
#--------------------------------------------------------------------------#
sub open_snmp_session {
my ($l_host)=@_;
my ($snmp_session,$snmp_error);
# open SNMP Session to Server
if ( $opt_snmpvers eq "3" ) {
if ( defined ($opt_authpasswd)) {
if ( defined ($opt_privpasswd)) {
($snmp_session,$snmp_error)=Net::SNMP->session(
-hostname => $l_host,
-port => $opt_port || 161,
-timeout => 2,
-retries => 2,
-maxmsgsize => 16384,
-version => $opt_snmpvers,
-username => $opt_username,
-authpassword => $opt_authpasswd,
-authprotocol => $opt_authproto,
-privpassword => $opt_privpasswd,
-privprotocol => $opt_privproto,
);
} else {
($snmp_session,$snmp_error)=Net::SNMP->session(
-hostname => $l_host,
-port => $opt_port || 161,
-timeout => 2,
-retries => 2,
-maxmsgsize => 16384,
-version => $opt_snmpvers,
-username => $opt_username,
-authpassword => $opt_authpasswd,
-authprotocol => $opt_authproto,
);
}
} else {
($snmp_session,$snmp_error)=Net::SNMP->session(
-hostname => $l_host,
-port => $opt_port || 161,
-timeout => 2,
-retries => 2,
-maxmsgsize => 16384,
-version => $opt_snmpvers,
-username => $opt_username,
);
}
} else {
($snmp_session,$snmp_error)=Net::SNMP->session(
-hostname => $l_host,
-community => $opt_community || 'public',
-port => $opt_port || 161,
-timeout => 2,
-retries => 2,
-maxmsgsize => 16384,
-version => $opt_snmpvers,
);
}
return ($snmp_session,$snmp_error);
}
sub create_msg {
my ($l_txt,$l_msg)=@_;
if (! defined $l_txt) {return};
if (defined $$l_msg) {
$$l_msg.=", ";
}
$$l_msg.=$l_txt;
}
sub get_table {
my ($l_oid)=@_;
my $l_snmp_result=$snmp_session->get_table(
-baseoid => $l_oid
);
#if ( ! defined ($l_snmp_result)) {
if ($snmp_session->error_status != 0) {
print "ERROR %d: get_table: ",$snmp_session->error_status,$snmp_session->error,"\n";
$snmp_session->close;
exit $ERRORS{'UNKNOWN'};
}
return $l_snmp_result;
}
sub check_args {
Getopt::Long::Configure('bundling');
GetOptions
("V" => \$opt_version,
"version" => \$opt_version,
"L" => \$opt_license,
"license" => \$opt_license,
"v" => \$opt_verbose,
"verbose" => \$opt_verbose,
"h|?" => \$opt_help,
"help" => \$opt_help,
"t=i" => \$opt_timeout,
"timeout=i" => \$opt_timeout,
"H=s" => \$opt_hostname,
"hostname=s" => \$opt_hostname,
"C=s" => \$opt_community,
"community=s" => \$opt_community,
"p=i" => \$opt_port,
"port=i" => \$opt_port,
"s=s" => \$opt_snmpvers,
"snmpvers=s" => \$opt_snmpvers,
"u=s" => \$opt_username,
"username=s" => \$opt_username,
"o=s" => \$opt_authpasswd,
"authpass=s" => \$opt_authpasswd,
"r=s" => \$opt_authproto,
"authprot=s" => \$opt_authproto,
"O=s" => \$opt_privpasswd,
"privpass=s" => \$opt_privpasswd,
"R=s" => \$opt_privproto,
"privprot=s" => \$opt_privproto,
);
if ($opt_license) {
print_gpl($PROGNAME,$REVISION);
exit $ERRORS{'OK'};
}
if ($opt_version) {
print_revision($PROGNAME,$REVISION);
exit $ERRORS{'OK'};
}
if ($opt_help) {
print_help();
exit $ERRORS{'OK'};
}
if ( ! defined($opt_hostname)){
print "\nERROR: Hostname not defined\n\n";
print_usage();
exit $ERRORS{'UNKNOWN'};
}
unless (defined $opt_snmpvers) {
$opt_snmpvers = DEFAULT_SNMPVERS;
}
if (($opt_snmpvers ne "1") && ($opt_snmpvers ne "2") && ($opt_snmpvers ne "3")) {
printf ("\nERROR: SNMP Version %s unknown\n",$opt_snmpvers);
print_usage();
exit $ERRORS{'UNKNOWN'};
}
unless (defined $opt_timeout) {
$opt_timeout = DEFAULT_TIMEOUT;
}
unless (defined $opt_port) {
$opt_port = DEFAULT_PORT;
}
unless (defined $opt_community) {
$opt_community = DEFAULT_COMMUNITY;
}
if (defined $opt_privpasswd) {
unless (defined $opt_privproto) {
$opt_privproto = DEFAULT_PRIVPROTO;
}
}
if (defined $opt_authpasswd) {
unless (defined $opt_authproto) {
$opt_authproto = DEFAULT_AUTHPROTO;
}
}
if ($opt_snmpvers eq 3) {
unless (defined $opt_username) {
printf ("\nERROR: SNMP Version %s: please define username\n",$opt_snmpvers);
print_usage();
exit $ERRORS{'UNKNOWN'};
}
}
return $ERRORS{'OK'};
}
sub print_usage {
print "Usage: $PROGNAME [-h] [-L] [-t timeout] [-v] [-V] [-C community] [-p port] [-s 1|2|3] -H hostname \n\n";
print "SNMP version 3 specific: [-u username] [-o authpass] [-r authprot] [-O privpass] [-R privprot]\n";
}
sub print_help {
print_revision($PROGNAME,$REVISION);
print "\n";
print_usage();
print "\n";
print " Check Disks via UCD SNMP MIB\n";
print " e.g: used on linux in net-snmp agent.\n\n";
print "-t (--timeout) Timeout in seconds (default=",DEFAULT_TIMEOUT,")\n";
print "-H (--hostname) Host to monitor\n";
print "-s (--snmpvers) SNMP Version [1|2|3] (default=",DEFAULT_SNMPVERS,")\n";
print "-C (--community) SNMP Community (default=",DEFAULT_COMMUNITY,")\n";
print "-p (--port) SNMP Port (default=",DEFAULT_PORT,")\n";
print "-h (--help) Help\n";
print "-V (--version) Programm version\n";
print "-v (--verbose) Print some useful information\n";
print "-L (--license) Print license information\n";
print "\nSNMP version 3 specific arguments:\n";
print "-u (--username) Security Name\n";
print "-o (--authpassword) Authentication password\n";
print "-r (--authprotocol) Authentication protocol [md5|sha]\n";
print "-O (--privpassword) Privacy password\n";
print "-R (--privprotocol) Privacy protocol [des|aes|3des]\n";
print "\n";
}
sub print_dskTable {
printtable ("UCD Disk Table");
print ("==============\n");
foreach my $l_key (oid_lex_sort(keys(%$p_dskTable))){
if (!(oid_base_match($dskIndex_tabular,$l_key))) {
next;
}
my $l_val=$p_dskTable->{$l_key};
printtabular("Disk Path", $p_dskTable->{$dskPath_tabular.".".$l_val});
printtabular("Device", $p_dskTable->{$dskDevice_tabular.".".$l_val});
printtabular("Minimum", $p_dskTable->{$dskMinimum_tabular.".".$l_val});
printtabular("Min Percent", $p_dskTable->{$dskMinPercent_tabular.".".$l_val});
printtabular("Total Size", $p_dskTable->{$dskTotal_tabular.".".$l_val});
printtabular("Avail Size", $p_dskTable->{$dskAvail_tabular.".".$l_val});
printtabular("Used Size", $p_dskTable->{$dskUsed_tabular.".".$l_val});
printtabular("Pct Used", $p_dskTable->{$dskPercent_tabular.".".$l_val});
printtabular("Pct Inode Used", $p_dskTable->{$dskPercentNode_tabular.".".$l_val});
printtabular("Error Flag", $p_dskTable->{$dskErrorFlag_tabular.".".$l_val});
printtabular("Error Message", $p_dskTable->{$dskErrorMsg_tabular.".".$l_val});
print ("\n");
}
}
sub printhead {
my ($l_head)=@_;
printf ("\n%-40s\n",$l_head);
}
sub printtable {
my ($l_head)=@_;
printf ("%-40s\n",$l_head);
}
sub printscalar {
my ($l_arg,$l_oid)=@_;
printf ("%-35s: %-30s\n",$l_arg,$l_oid);
}
sub printtabular {
my ($l_arg,$l_oid)=@_;
printf ("%-35s: %-30s\n",$l_arg,$l_oid);
}
sub print_gpl {
print <.
EOD
}
sub print_revision {
my ($l_prog,$l_revision)=@_;
print <
for more information concerning this plugin call:
check_disks_ucd -h
perldoc check_disks_ucd
more information concerning the configuration of the UCD SNMP Package:
man snmpd.conf
=head1 AUTHOR
Herbert Stadler, Austria (hestadler@gmx.at)
December 2007
This plugin is a contribution to the nagios community.
=head1 REQUIRED SOFTWARE
from search.cpan.org
Net::SNMP Package e.g: Net-SNMP-5.2.0.tar.gz
=head1 HOW TO CHECK THE SERVER FUNCTIONALITY
Example:
snmpwalk 172.29.130.201 -v2c -c public enterprises.2021.9
should return some lines like these:
UCD-SNMP-MIB::dskIndex.1 = INTEGER: 1
UCD-SNMP-MIB::dskPath.1 = STRING: /
UCD-SNMP-MIB::dskDevice.1 = STRING: /dev/mapper/VolGroup00-LogVol00
UCD-SNMP-MIB::dskMinimum.1 = INTEGER: 10000000
UCD-SNMP-MIB::dskMinPercent.1 = INTEGER: -1
UCD-SNMP-MIB::dskTotal.1 = INTEGER: 11191892
UCD-SNMP-MIB::dskAvail.1 = INTEGER: 3656340
UCD-SNMP-MIB::dskUsed.1 = INTEGER: 6967028
UCD-SNMP-MIB::dskPercent.1 = INTEGER: 66
UCD-SNMP-MIB::dskPercentNode.1 = INTEGER: 9
UCD-SNMP-MIB::dskErrorFlag.1 = INTEGER: 1
UCD-SNMP-MIB::dskErrorMsg.1 = STRING: /: less than 10000000 free (= 3656340)
if not, check the configuration file
- on linux (/etc/snmp/snmpd.conf)
# disks checks (Examples)
# disk PATH [ MINSPACE | MINPERCENT ]
disk / 10000000
=head1 CONFIGURATION IN NAGIOS
Copy this plugin to the nagios plugin installation directory
e.g.: /usr/lib(64)/nagios/plugin
COMMAND DEFINITION:
# "check_disks_ucd" command definition
define command{
command_name check_disks_ucd
command_line $USER1$/check_disks_ucd -H $HOSTADDRESS$
}
=head1 PLUGIN HISTORY
Version 1.0 - 2007-12-15 first release
Version 1.1 - 2007-12-19 fixed problem with **ePN
(Missing right curly or square ...)
Version 1.2 - 2009-02-17 some new "use lib .." statements
Version 1.3 - 2010-03-24 check error_status of snmp call
=head1 COPYRIGHT AND DISCLAIMER
Copyright (C) 2007 by Herbert Stadler
email: hestadler@gmx.at
License Information:
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 .
=cut