diff options
Diffstat (limited to 'Monitoring/nagios/plugins/check_ifstatus')
| -rwxr-xr-x | Monitoring/nagios/plugins/check_ifstatus | 425 |
1 files changed, 425 insertions, 0 deletions
diff --git a/Monitoring/nagios/plugins/check_ifstatus b/Monitoring/nagios/plugins/check_ifstatus new file mode 100755 index 00000000..b977675e --- /dev/null +++ b/Monitoring/nagios/plugins/check_ifstatus @@ -0,0 +1,425 @@ +#! /usr/bin/perl -w +# +# check_ifstatus.pl - nagios plugin +# +# +# Copyright (C) 2000 Christoph Kron +# Modified 5/2002 to conform to updated Nagios Plugin Guidelines (S. Ghosh) +# Added -x option (4/2003) +# Added -u option (4/2003) +# Added -M option (10/2003) +# Added SNMPv3 support (10/2003) +# +# 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. +# +# +# Report bugs to: ck@zet.net, nagiosplug-help@lists.sf.net +# +# 11.01.2000 Version 1.0 +# + +use POSIX; +use strict; +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 (); + + +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 $opt_x ; +my %excluded ; +my @unused_ports ; +my %session_opts; + + + + + +# Just in case of problems, let's not hang Nagios +$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 $key (keys %ifStatus) { + + # skip unused interfaces + if (!defined($ifStatus{$key}{'notInUse'})) { + # check only if interface is administratively up + if ($ifStatus{$key}{$snmpIfAdminStatus} == 1 ) { + + # 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>", + $ifStatus{$key}{$snmpIfName}, + $ifStatus{$key}{$snmpIfAlias}); + }else{ + $ifmessage .= sprintf("%s: down <BR>", + $ifStatus{$key}{$snmpIfDescr}); + } + } + if ($ifStatus{$key}{$snmpIfOperStatus} == 5 ) { $ifdormant++ ;} + }else{ + $ifexclude++; + } + + } + }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, '1.4.15'); + print_usage(); + printf "check_ifstatus plugin for Nagios monitors 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 " -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, '1.4.15'); + +} + +sub process_arguments() { + $status = GetOptions( + "V" => \$opt_V, "version" => \$opt_V, + "h" => \$opt_h, "help" => \$opt_h, + "v=s" => \$snmp_version, "snmp_version=s" => \$snmp_version, + "C=s" => \$community,"community=s" => \$community, + "L=s" => \$seclevel, "seclevel=s" => \$seclevel, + "a=s" => \$authproto, "authproto=s" => \$authproto, + "U=s" => \$secname, "secname=s" => \$secname, + "A=s" => \$authpass, "authpass=s" => \$authpass, + "X=s" => \$privpass, "privpass=s" => \$privpass, + "P=s" => \$privproto, "privproto=s" => \$privproto, + "c=s" => \$context, "context=s" => \$context, + "p=i" =>\$port, "port=i" => \$port, + "H=s" => \$hostname, "hostname=s" => \$hostname, + "I" => \$ifXTable, "ifmib" => \$ifXTable, + "x:s" => \$opt_x, "exclude:s" => \$opt_x, + "u=s" => \$opt_u, "unused_ports=s" => \$opt_u, + "M=i" => \$maxmsgsize, "maxmsgsize=i" => \$maxmsgsize, + "t=i" => \$timeout, "timeout=i" => \$timeout, + ); + + if ($status == 0){ + print_help(); + exit $ERRORS{'OK'}; + } + + if ($opt_V) { + print_revision($PROGNAME,'1.4.15'); + 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{ + $excluded{23} = 1; # default PPP(23) if empty list - note (AIX seems to think PPP is 22 according to a post) + } + } + + # Excluded interface ports (ifIndex) - management reasons + if ($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"}; +} |