contrib/check_maxchannels.pl

   1 #!/usr/bin/perl -w
   2 #
   3 # check_maxchannels.pl - nagios plugin
   4 #
   5 #
   6 # Copyright (C) 2000 Christoph Kron
   7 #
   8 # This program is free software; you can redistribute it and/or
   9 # modify it under the terms of the GNU General Public License
  10 # as published by the Free Software Foundation; either version 2
  11 # of the License, or (at your option) any later version.
  12 #
  13 # This program is distributed in the hope that it will be useful,
  14 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 # GNU General Public License for more details.
  17 #
  18 # You should have received a copy of the GNU General Public License
  19 # along with this program; if not, write to the Free Software
  20 # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  21 #
  22 #
  23 # Report bugs to: ck@zet.net
  24 #
  25 # 11.01.2000 Version 1.0
  26
  27 use strict;
  28
  29 use Net::SNMP;
  30 use Getopt::Long;
  31 &Getopt::Long::config('auto_abbrev');
  32
  33
  34 my $status;
  35 my $TIMEOUT = 15;
  36
  37 my %ERRORS = ('UNKNOWN' , '-1',
  38               'OK' , '0',
  39               'WARNING', '1',
  40               'CRITICAL', '2');
  41
  42
  43 my $state = "UNKNOWN";
  44 my $answer = "";
  45 my $snmpkey;
  46 my $snmpoid;
  47 my $key;
  48 my $community = "public";
  49 my $port = 161;
  50 my @snmpoids;
  51 # free channels
  52 my $snmpWanAvailableChannels = '1.3.6.1.4.1.529.4.23.0';
  53 # maximum channels
  54 my $snmpWanSwitchedChannels = '1.3.6.1.4.1.529.4.24.0';
  55 my $snmpWanDisabledChannels = '1.3.6.1.4.1.529.4.25.0';
  56 my $snmpWanActiveChannels = '1.3.6.1.4.1.529.4.26.0';
  57 my $snmpWanNailedChannels = '1.3.6.1.4.1.529.4.27.0';
  58 my $snmpWanOutOfServiceChannels = '1.3.6.1.4.1.529.4.28.0';
  59 my $snmpEventCurrentActiveSessions = '1.3.6.1.4.1.529.10.6.0';
  60 # since startup
  61 my $snmpEventTotalNoModems = '1.3.6.1.4.1.529.10.15.0';
  62 # lan modem
  63 my $snmpDeadLanModem = '1.3.6.1.4.1.529.15.7.0';
  64 my $snmpDisabledLanModem = '1.3.6.1.4.1.529.15.5.0';
  65 my $snmpSuspectLanModem = '1.3.6.1.4.1.529.15.3.0';
  66 my $snmpAvailLanModem = '1.3.6.1.4.1.529.15.1.0';
  67 my $snmpBusyLanModem = '1.3.6.1.4.1.529.15.9.0';
  68 # max modems
  69 my $snmpMdmNumber  = '1.3.6.1.2.1.38.1.1.0';
  70 my $hostname;
  71 my $session;
  72 my $error;
  73 my $response;
  74 my %wanStatus;
  75
  76
  77 my $WanAvailableChannels;
  78 my $WanSwitchedChannels;
  79 my $WanDisabledChannels;
  80 my $WanActiveChannels;
  81 my $WanNailedChannels;
  82 my $WanOutOfServiceChannels;
  83 my $EventCurrentActiveSessions;
  84 my $EventTotalNoModems;
  85 my $DeadLanModem;
  86 my $DisabledLanModem;
  87 my $SuspectLanModem;
  88 my $AvailLanModem;
  89 my $BusyLanModem;
  90 my $MdmNumber;
  91
  92
  93 sub usage {
  94   printf "\nMissing arguments!\n";
  95   printf "\n";
  96   printf "Perl Check maxchannels plugin for Nagios\n";
  97   printf "monitors ISDN lines and modems on Ascend MAX 2000/4000/6000/TNT\n";
  98   printf "usage: \n";
  99   printf "check_maxchannel.pl -c <READCOMMUNITY> -p <PORT> <HOSTNAME>\n";
 100   printf "Copyright (C) 2000 Christoph Kron\n";
 101   printf "check_maxchannels.pl comes with ABSOLUTELY NO WARRANTY\n";
 102   printf "This programm is licensed under the terms of the ";
 103   printf "GNU General Public License\n(check source code for details)\n";
 104   printf "\n\n";
 105   exit $ERRORS{"UNKNOWN"};
 106 }
 107
 108 # Just in case of problems, let's not hang Nagios
 109 $SIG{'ALRM'} = sub {
 110      print ("ERROR: No snmp response from $hostname (alarm)\n");
 111      exit $ERRORS{"UNKNOWN"};
 112 };
 113 alarm($TIMEOUT);
 114
 115
 116 $status = GetOptions("community=s",\$community,
 117                      "port=i",\$port);
 118 if ($status == 0)
 119 {
 120         &usage;
 121 }
 122
 123    #shift;
 124    $hostname  = shift || &usage;
 125
 126
 127
 128 push(@snmpoids,$snmpWanAvailableChannels);
 129 push(@snmpoids,$snmpWanSwitchedChannels);
 130 push(@snmpoids,$snmpWanDisabledChannels);
 131 push(@snmpoids,$snmpWanActiveChannels);
 132 push(@snmpoids,$snmpWanNailedChannels);
 133 push(@snmpoids,$snmpWanOutOfServiceChannels);
 134
 135 push(@snmpoids,$snmpEventCurrentActiveSessions);
 136
 137 push(@snmpoids,$snmpEventTotalNoModems);
 138 push(@snmpoids,$snmpDeadLanModem);
 139 push(@snmpoids,$snmpDisabledLanModem);
 140 push(@snmpoids,$snmpSuspectLanModem);
 141 push(@snmpoids,$snmpAvailLanModem);
 142 push(@snmpoids,$snmpBusyLanModem);
 143 push(@snmpoids,$snmpMdmNumber);
 144
 145    ($session, $error) = Net::SNMP->session(
 146       -hostname  => $hostname,
 147       -community => $community,
 148       -port      => $port
 149    );
 150
 151    if (!defined($session)) {
 152       $state='UNKNOWN';
 153       $answer=$error;
 154       print ("$state: $answer");
 155       exit $ERRORS{$state};
 156    }
 157
 158    if (!defined($response = $session->get_request(@snmpoids))) {
 159       $answer=$session->error;
 160       $session->close;
 161       $state = 'CRITICAL';
 162       print ("$state: $answer,$community");
 163       exit $ERRORS{$state};
 164    }
 165
 166
 167 $WanAvailableChannels = $response->{$snmpWanAvailableChannels};
 168 $WanSwitchedChannels = $response->{$snmpWanSwitchedChannels};
 169 $WanDisabledChannels = $response->{$snmpWanDisabledChannels};
 170 $WanActiveChannels = $response->{$snmpWanActiveChannels};
 171 $WanNailedChannels = $response->{$snmpWanNailedChannels};
 172 $WanOutOfServiceChannels = $response->{$snmpWanOutOfServiceChannels};
 173 $EventCurrentActiveSessions = $response->{$snmpEventCurrentActiveSessions};
 174 $EventTotalNoModems = $response->{$snmpEventTotalNoModems};
 175 $DeadLanModem = $response->{$snmpDeadLanModem};
 176 $DisabledLanModem = $response->{$snmpDisabledLanModem};
 177 $SuspectLanModem = $response->{$snmpSuspectLanModem};
 178 $AvailLanModem = $response->{$snmpAvailLanModem};
 179 $BusyLanModem = $response->{$snmpBusyLanModem};
 180 $MdmNumber = $response->{$snmpMdmNumber};
 181
 182 # less than 50% -> WARNING
 183 if ( 0 < $WanOutOfServiceChannels
 184      && $WanOutOfServiceChannels < ($snmpWanSwitchedChannels * 0.5) ) {
 185    $state = 'WARNING';
 186 }
 187 elsif ($WanOutOfServiceChannels > 0) {
 188    $state = 'CRITICAL';
 189 }
 190 elsif ($DeadLanModem > 0) {
 191    $state = 'CRITICAL';
 192 }
 193 elsif ($SuspectLanModem > 0) {
 194    $state = 'WARNING';
 195 }
 196 elsif ($AvailLanModem == 0) {
 197    $state = 'WARNING';
 198 }
 199 else {
 200    $state = 'OK';
 201 }
 202
 203
 204 $answer =  sprintf("active sessions: %d (%d), active modems: %d (%d)<BR>",
 205                 $EventCurrentActiveSessions,
 206                 $WanSwitchedChannels,
 207                 $BusyLanModem,
 208                 $MdmNumber);
 209
 210 $answer .= sprintf("channels available: %d, disabled: %d",
 211                 $WanAvailableChannels,
 212                 $WanDisabledChannels);
 213
 214 $answer .= sprintf(", out of service: %d, nailed: %d<BR>",
 215                 $WanOutOfServiceChannels,
 216                 $WanNailedChannels);
 217
 218 $answer .= sprintf("modems avail.: %d, disabled: %d, suspect: %d, dead: %d<BR>",
 219                 $AvailLanModem,
 220                 $DisabledLanModem,
 221                 $SuspectLanModem,
 222                 $DeadLanModem);
 223
 224 $answer .= sprintf("unserviced modem calls: %d (since startup)\n",
 225                 $EventTotalNoModems);
 226
 227 $session->close;
 228
 229 print ("$state: $answer");
 230 exit $ERRORS{$state};
 231