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Linux altar53.supremepanel53.com 4.18.0-553.8.1.lve.el8.x86_64 #1 SMP Thu Jul 4 16:24:39 UTC 2024 x86_64
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#!/usr/bin/perl -w
#
# check_ifstatus.pl - monitoring plugin
#
#
# Copyright (C) 2000 Christoph Kron
# Modified 5/2002 to conform to updated Monitoring Plugins Guidelines (S. Ghosh)
# Added -x option (4/2003)
# Added -u option (4/2003)
# Added -M option (10/2003)
# Added SNMPv3 support (10/2003)
# Added -n option (07/2014)
#
# 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, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
#
#
# Report bugs to: ck@zet.net, help@monitoring-plugins.org
#
# 11.01.2000 Version 1.0
#
use POSIX;
use strict;
use FindBin;
use lib "$FindBin::Bin";
use lib '/usr/lib/nagios/plugins';
use utils qw($TIMEOUT %ERRORS &print_revision &support);
use Net::SNMP;
use Getopt::Long;
Getopt::Long::Configure('bundling');
my $PROGNAME = "check_ifstatus";
sub print_help ();
sub usage ($);
sub print_usage ();
sub process_arguments ();
$ENV{'PATH'}='/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin';
$ENV{'BASH_ENV'}='';
$ENV{'ENV'}='';
my $status;
my %ifOperStatus = ('1','up',
'2','down',
'3','testing',
'4','unknown',
'5','dormant',
'6','notPresent',
'7','lowerLayerDown'); # down due to the state of lower layer interface(s));
my $timeout ;
my $state = "UNKNOWN";
my $answer = "";
my $snmpkey=0;
my $snmpoid=0;
my $key=0;
my $community = "public";
my $maxmsgsize = 1472 ; # Net::SNMP default is 1472
my ($seclevel, $authproto, $secname, $authpass, $privpass, $privproto, $auth, $priv, $context);
my $port = 161;
my @snmpoids;
my $snmpIfAdminStatus = '1.3.6.1.2.1.2.2.1.7';
my $snmpIfDescr = '1.3.6.1.2.1.2.2.1.2';
my $snmpIfOperStatus = '1.3.6.1.2.1.2.2.1.8';
my $snmpIfName = '1.3.6.1.2.1.31.1.1.1.1';
my $snmpIfAlias = '1.3.6.1.2.1.31.1.1.1.18';
my $snmpLocIfDescr = '1.3.6.1.4.1.9.2.2.1.1.28';
my $snmpIfType = '1.3.6.1.2.1.2.2.1.3';
my $hostname;
my $session;
my $error;
my $response;
my %ifStatus;
my $ifup =0 ;
my $ifdown =0;
my $ifdormant = 0;
my $ifexclude = 0 ;
my $ifunused = 0;
my $ifmessage = "";
my $snmp_version = 1;
my $ifXTable;
my $opt_h ;
my $opt_V ;
my $opt_u;
my $opt_n;
my $opt_x ;
my %excluded ;
my %unused_names ;
my @unused_ports ;
my %session_opts;
# Just in case of problems, let's not hang the monitoring system
$SIG{'ALRM'} = sub {
print ("ERROR: No snmp response from $hostname (alarm timeout)\n");
exit $ERRORS{"UNKNOWN"};
};
#Option checking
$status = process_arguments();
if ($status != 0)
{
print_help() ;
exit $ERRORS{'OK'};
}
alarm($timeout);
($session, $error) = Net::SNMP->session(%session_opts);
if (!defined($session)) {
$state='UNKNOWN';
$answer=$error;
print ("$state: $answer\n");
exit $ERRORS{$state};
}
push(@snmpoids,$snmpIfOperStatus);
push(@snmpoids,$snmpIfAdminStatus);
push(@snmpoids,$snmpIfDescr);
push(@snmpoids,$snmpIfType);
push(@snmpoids,$snmpIfName) if ( defined $ifXTable);
push(@snmpoids,$snmpIfAlias) if ( defined $ifXTable);
foreach $snmpoid (@snmpoids) {
if (!defined($response = $session->get_table($snmpoid))) {
$answer=$session->error;
$session->close;
$state = 'CRITICAL';
if ( ( $snmpoid =~ $snmpIfName ) && defined $ifXTable ) {
print ("$state: Device does not support ifTable - try without -I option\n");
}else{
print ("$state: $answer for $snmpoid with snmp version $snmp_version\n");
}
exit $ERRORS{$state};
}
foreach $snmpkey (keys %{$response}) {
$snmpkey =~ /.*\.(\d+)$/;
$key = $1;
$ifStatus{$key}{$snmpoid} = $response->{$snmpkey};
}
}
$session->close;
alarm(0);
foreach $key (keys %ifStatus) {
# skip unused interfaces
my $ifName = $ifStatus{$key}{$snmpIfDescr};
if (!defined($ifStatus{$key}{'notInUse'}) && !grep(/^${ifName}/, @unused_ports )) {
# check only if interface is administratively up
if ($ifStatus{$key}{$snmpIfAdminStatus} == 1 ) {
#check only if interface is not excluded
if (!defined $unused_names{$ifStatus{$key}{$snmpIfDescr}} ) {
# check only if interface type is not listed in %excluded
if (!defined $excluded{$ifStatus{$key}{$snmpIfType}} ) {
if ($ifStatus{$key}{$snmpIfOperStatus} == 1 ) { $ifup++ ; }
if ($ifStatus{$key}{$snmpIfOperStatus} == 2 ) {
$ifdown++ ;
if (defined $ifXTable) {
$ifmessage .= sprintf("%s: down -> %s<BR>\n", $ifStatus{$key}{$snmpIfName}, $ifStatus{$key}{$snmpIfAlias});
}else{
$ifmessage .= sprintf("%s: down <BR>\n",$ifStatus{$key}{$snmpIfDescr});
}
}
if ($ifStatus{$key}{$snmpIfOperStatus} == 5 ) { $ifdormant++ ;}
} else {
$ifexclude++;
}
} else {
$ifunused++;
}
}
}else{
$ifunused++;
}
}
if ($ifdown > 0) {
$state = 'CRITICAL';
$answer = sprintf("host '%s', interfaces up: %d, down: %d, dormant: %d, excluded: %d, unused: %d<BR>",
$hostname,
$ifup,
$ifdown,
$ifdormant,
$ifexclude,
$ifunused);
$answer = $answer . $ifmessage . "\n";
}
else {
$state = 'OK';
$answer = sprintf("host '%s', interfaces up: %d, down: %d, dormant: %d, excluded: %d, unused: %d",
$hostname,
$ifup,
$ifdown,
$ifdormant,
$ifexclude,
$ifunused);
}
my $perfdata = sprintf("up=%d down=%d dormant=%d excluded=%d unused=%d",$ifup,$ifdown,$ifdormant,$ifexclude,$ifunused);
print ("$state: $answer |$perfdata\n");
exit $ERRORS{$state};
sub usage($) {
print "$_[0]\n";
print_usage();
exit $ERRORS{"UNKNOWN"};
}
sub print_usage() {
printf "\n";
printf "usage: \n";
printf "check_ifstatus -C <READCOMMUNITY> -p <PORT> -H <HOSTNAME>\n";
printf "Copyright (C) 2000 Christoph Kron\n";
printf "Updates 5/2002 Subhendu Ghosh\n";
support();
printf "\n\n";
}
sub print_help() {
print_revision($PROGNAME, '2.1.1');
print_usage();
printf "check_ifstatus plugin for monitoring operational \n";
printf "status of each network interface on the target host\n";
printf "\nUsage:\n";
printf " -H (--hostname) Hostname to query - (required)\n";
printf " -C (--community) SNMP read community (defaults to public,\n";
printf " used with SNMP v1 and v2c\n";
printf " -v (--snmp_version) 1 for SNMP v1 (default)\n";
printf " 2 for SNMP v2c\n";
printf " SNMP v2c will use get_bulk for less overhead\n";
printf " 3 for SNMPv3 (requires -U option)";
printf " -p (--port) SNMP port (default 161)\n";
printf " -I (--ifmib) Agent supports IFMIB ifXTable. For Cisco - this will provide\n";
printf " the descriptive name. Do not use if you don't know what this is. \n";
printf " -x (--exclude) A comma separated list of ifType values that should be excluded \n";
printf " from the report (default for an empty list is PPP(23).\n";
printf " -n (--unused_ports_by_name) A comma separated list of ifDescr values that should be excluded \n";
printf " from the report (default is an empty exclusion list).\n";
printf " -u (--unused_ports) A comma separated list of ifIndex values that should be excluded \n";
printf " from the report (default is an empty exclusion list).\n";
printf " See the IANAifType-MIB for a list of interface types.\n";
printf " -L (--seclevel) choice of \"noAuthNoPriv\", \"authNoPriv\", or \"authPriv\"\n";
printf " -U (--secname) username for SNMPv3 context\n";
printf " -c (--context) SNMPv3 context name (default is empty string)\n";
printf " -A (--authpass) authentication password (cleartext ascii or localized key\n";
printf " in hex with 0x prefix generated by using \"snmpkey\" utility\n";
printf " auth password and authEngineID\n";
printf " -a (--authproto) Authentication protocol (MD5 or SHA1)\n";
printf " -X (--privpass) privacy password (cleartext ascii or localized key\n";
printf " in hex with 0x prefix generated by using \"snmpkey\" utility\n";
printf " privacy password and authEngineID\n";
printf " -P (--privproto) privacy protocol (DES or AES; default: DES)\n";
printf " -M (--maxmsgsize) Max message size - usefull only for v1 or v2c\n";
printf " -t (--timeout) seconds before the plugin times out (default=$TIMEOUT)\n";
printf " -V (--version) Plugin version\n";
printf " -h (--help) usage help \n\n";
print_revision($PROGNAME, '2.1.1');
}
sub process_arguments() {
$status = GetOptions(
"V" => \$opt_V, "version" => \$opt_V,
"h" => \$opt_h, "help" => \$opt_h,
"v=s" => \$snmp_version, "snmp_version=s" => \$snmp_version,
"C=s" => \$community,"community=s" => \$community,
"L=s" => \$seclevel, "seclevel=s" => \$seclevel,
"a=s" => \$authproto, "authproto=s" => \$authproto,
"U=s" => \$secname, "secname=s" => \$secname,
"A=s" => \$authpass, "authpass=s" => \$authpass,
"X=s" => \$privpass, "privpass=s" => \$privpass,
"P=s" => \$privproto, "privproto=s" => \$privproto,
"c=s" => \$context, "context=s" => \$context,
"p=i" =>\$port, "port=i" => \$port,
"H=s" => \$hostname, "hostname=s" => \$hostname,
"I" => \$ifXTable, "ifmib" => \$ifXTable,
"x:s" => \$opt_x, "exclude:s" => \$opt_x,
"u=s" => \$opt_u, "unused_ports=s" => \$opt_u,
"n=s" => \$opt_n, "unused_ports_by_name=s" => \$opt_n,
"M=i" => \$maxmsgsize, "maxmsgsize=i" => \$maxmsgsize,
"t=i" => \$timeout, "timeout=i" => \$timeout,
);
if ($status == 0){
print_help();
exit $ERRORS{'OK'};
}
if ($opt_V) {
print_revision($PROGNAME,'2.1.1');
exit $ERRORS{'OK'};
}
if ($opt_h) {
print_help();
exit $ERRORS{'OK'};
}
unless (defined $timeout) {
$timeout = $TIMEOUT;
}
# Net::SNMP wants an integer
$snmp_version = 2 if $snmp_version eq "2c";
if ($snmp_version !~ /^[123]$/){
$state='UNKNOWN';
print ("$state: No support for SNMP v$snmp_version yet\n");
exit $ERRORS{$state};
}
%session_opts = (
-hostname => $hostname,
-port => $port,
-version => $snmp_version,
-maxmsgsize => $maxmsgsize
);
$session_opts{'-community'} = $community if (defined $community && $snmp_version =~ /[12]/);
if ($snmp_version =~ /3/ ) {
# Must define a security level even though default is noAuthNoPriv
# v3 requires a security username
if (defined $seclevel && defined $secname) {
$session_opts{'-username'} = $secname;
# Must define a security level even though defualt is noAuthNoPriv
unless ( grep /^$seclevel$/, qw(noAuthNoPriv authNoPriv authPriv) ) {
usage("Must define a valid security level even though default is noAuthNoPriv");
}
# Authentication wanted
if ( $seclevel eq 'authNoPriv' || $seclevel eq 'authPriv' ) {
if (defined $authproto && $authproto ne 'MD5' && $authproto ne 'SHA1') {
usage("Auth protocol can be either MD5 or SHA1");
}
$session_opts{'-authprotocol'} = $authproto if(defined $authproto);
if ( !defined $authpass) {
usage("Auth password/key is not defined");
}else{
if ($authpass =~ /^0x/ ) {
$session_opts{'-authkey'} = $authpass ;
}else{
$session_opts{'-authpassword'} = $authpass ;
}
}
}
# Privacy (DES encryption) wanted
if ($seclevel eq 'authPriv' ) {
if (! defined $privpass) {
usage("Privacy passphrase/key is not defined");
}else{
if ($privpass =~ /^0x/){
$session_opts{'-privkey'} = $privpass;
}else{
$session_opts{'-privpassword'} = $privpass;
}
}
$session_opts{'-privprotocol'} = $privproto if(defined $privproto);
}
# Context name defined or default
unless ( defined $context) {
$context = "";
}
}else {
usage("Security level or name is not defined");
}
} # end snmpv3
# Excluded interfaces types (ifType) (backup interfaces, dial-on demand interfaces, PPP interfaces
if (defined $opt_x) {
my @x = split(/,/, $opt_x);
if ( @x) {
foreach $key (@x){
$excluded{$key} = 1;
}
}else{
$excluded{23} = 1; # default PPP(23) if empty list - note (AIX seems to think PPP is 22 according to a post)
}
}
# Excluded interface descriptors
if (defined $opt_n) {
my @unused = split(/,/,$opt_n);
if ( @unused ) {
foreach $key (@unused) {
$unused_names{$key} = 1;
}
}
}
# Excluded interface ports (ifIndex) - management reasons
if ($opt_u) {
@unused_ports = split(/,/,$opt_u);
foreach $key (@unused_ports) {
$ifStatus{$key}{'notInUse'}++ ;
}
}
if (! utils::is_hostname($hostname)){
usage("Hostname invalid or not given");
exit $ERRORS{"UNKNOWN"};
}
if ($snmp_version !~ /[123]/) {
$state='UNKNOWN';
print ("$state: No support for SNMP v$snmp_version yet\n");
exit $ERRORS{$state};
}
return $ERRORS{"OK"};
}