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# Report bugs to: nagiosplug-help@lists.sourceforge.net
#
# 11.01.2000 Version 1.0
-# $Id$
#
# Patches from Guy Van Den Bergh to warn on ifadminstatus down interfaces
# instead of critical.
my $PROGNAME = "check_ifoperstatus";
sub print_help ();
-sub usage ();
+sub usage ($);
+sub print_usage ();
sub process_arguments ();
my $timeout;
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)
+ '2','down',
+ '3','testing',
+ '4','unknown',
+ '5','dormant',
+ '6','notPresent',
+ '7','lowerLayerDown'); # down due to the state of lower layer interface(s)
my $state = "UNKNOWN";
my $answer = "";
my $snmpkey = 0;
my $community = "public";
my $maxmsgsize = 1472 ; # Net::SNMP default is 1472
-my ($seclevel, $authproto, $secname, $authpass, $privpass, $auth, $priv, $context);
+my ($seclevel, $authproto, $secname, $authpass, $privpass, $privproto, $auth, $priv, $context);
my $port = 161;
my @snmpoids;
my $sysUptime = '1.3.6.1.2.1.1.3.0';
my $snmpIfDescr = '1.3.6.1.2.1.2.2.1.2';
+my $snmpIfType = '1.3.6.1.2.1.2.2.1.3';
my $snmpIfAdminStatus = '1.3.6.1.2.1.2.2.1.7';
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 $opt_h ;
my $opt_V ;
my $ifdescr;
+my $iftype;
my $key;
my $lastc;
my $dormantWarn;
+my $adminWarn;
my $name;
+my %session_opts;
### Validate Arguments
# Just in case of problems, let's not hang Nagios
$SIG{'ALRM'} = sub {
- print ("ERROR: No snmp response from $hostname (alarm)\n");
- exit $ERRORS{"UNKNOWN"};
+ print ("ERROR: No snmp response from $hostname (alarm)\n");
+ exit $ERRORS{"UNKNOWN"};
};
alarm($timeout);
+($session, $error) = Net::SNMP->session(%session_opts);
+
+
+if (!defined($session)) {
+ $state='UNKNOWN';
+ $answer=$error;
+ print ("$state: $answer\n");
+ exit $ERRORS{$state};
+}
## map ifdescr to ifindex - should look at being able to cache this value
-if (defined $ifdescr) {
+if (defined $ifdescr || defined $iftype) {
# escape "/" in ifdescr - very common in the Cisco world
- $ifdescr =~ s/\//\\\//g;
-
- $status=fetch_ifdescr(); # if using on device with large number of interfaces
- # recommend use of SNMP v2 (get-bulk)
+ if (defined $iftype) {
+ $status=fetch_ifindex($snmpIfType, $iftype);
+ } else {
+ $ifdescr =~ s/\//\\\//g;
+ $status=fetch_ifindex($snmpIfDescr, $ifdescr); # if using on device with large number of interfaces
+ # recommend use of SNMP v2 (get-bulk)
+ }
if ($status==0) {
$state = "UNKNOWN";
- printf "$state: could not retrive ifdescr snmpkey - $status-$snmpkey\n";
+ printf "$state: could not retrive ifdescr/iftype snmpkey - $status-$snmpkey\n";
$session->close;
exit $ERRORS{$state};
}
push(@snmpoids,$snmpIfName) if (defined $ifXTable) ;
push(@snmpoids,$snmpIfAlias) if (defined $ifXTable) ;
- if (!defined($response = $session->get_request(@snmpoids))) {
- $answer=$session->error;
- $session->close;
- $state = 'WARNING';
- print ("$state: SNMP error: $answer\n");
- exit $ERRORS{$state};
- }
-
- $answer = sprintf("host '%s', %s(%s) is %s\n",
- $hostname,
- $response->{$snmpIfDescr},
- $snmpkey,
- $ifOperStatus{$response->{$snmpIfOperStatus}}
- );
-
-
- ## Check to see if ifName match is requested and it matches - exit if no match
- ## not the interface we want to monitor
- if ( defined $name && not ($response->{$snmpIfName} eq $name) ) {
- $state = 'UNKNOWN';
- $answer = "Interface name ($name) doesn't match snmp value ($response->{$snmpIfName}) (index $snmpkey)";
- print ("$state: $answer");
- exit $ERRORS{$state};
- }
-
- ## define the interface name
- if (defined $ifXTable) {
- $name = $response->{$snmpIfName} ." - " .$response->{$snmpIfAlias} ;
- }else{
- $name = $response->{$snmpIfDescr} ;
- }
-
- ## if AdminStatus is down - some one made a consious effort to change config
- ##
- if ( not ($response->{$snmpIfAdminStatus} == 1) ) {
- $state = 'WARNING';
- $answer = "Interface $name (index $snmpkey) is administratively down.";
-
- }
- ## Check operational status
- elsif ( $response->{$snmpIfOperStatus} == 2 ) {
- $state = 'CRITICAL';
- $answer = "Interface $name (index $snmpkey) is down.";
- } elsif ( $response->{$snmpIfOperStatus} == 5 ) {
- if (defined $dormantWarn ) {
- if ($dormantWarn eq "w") {
- $state = 'WARNNG';
- $answer = "Interface $name (index $snmpkey) is dormant.";
- }elsif($dormantWarn eq "c") {
- $state = 'CRITICAL';
- $answer = "Interface $name (index $snmpkey) is dormant.";
- }elsif($dormantWarn eq "i") {
- $state = 'OK';
- $answer = "Interface $name (index $snmpkey) is dormant.";
- }
- }else{
- # dormant interface - but warning/critical/ignore not requested
- $state = 'CRITICAL';
- $answer = "Interface $name (index $snmpkey) is dormant.";
- }
- } elsif ( $response->{$snmpIfOperStatus} == 6 ) {
- $state = 'CRITICAL';
- $answer = "Interface $name (index $snmpkey) notPresent - possible hotswap in progress.";
- } elsif ( $response->{$snmpIfOperStatus} == 7 ) {
- $state = 'CRITICAL';
- $answer = "Interface $name (index $snmpkey) down due to lower layer being down.";
+if (!defined($response = $session->get_request(@snmpoids))) {
+ $answer=$session->error;
+ $session->close;
+ $state = 'WARNING';
+ print ("$state: SNMP error: $answer\n");
+ exit $ERRORS{$state};
+}
- } elsif ( $response->{$snmpIfOperStatus} == 3 || $response->{$snmpIfOperStatus} == 4 ) {
- $state = 'CRITICAL';
- $answer = "Interface $name (index $snmpkey) down (testing/unknown).";
+$answer = sprintf("host '%s', %s(%s) is %s\n",
+ $hostname,
+ $response->{$snmpIfDescr},
+ $snmpkey,
+ $ifOperStatus{$response->{$snmpIfOperStatus}}
+);
+
+
+## Check to see if ifName match is requested and it matches - exit if no match
+## not the interface we want to monitor
+if ( defined $ifName && not ($response->{$snmpIfName} eq $ifName) ) {
+ $state = 'UNKNOWN';
+ $answer = "Interface name ($ifName) doesn't match snmp value ($response->{$snmpIfName}) (index $snmpkey)";
+ print ("$state: $answer\n");
+ exit $ERRORS{$state};
+}
+
+## define the interface name
+if (defined $ifXTable) {
+ $name = $response->{$snmpIfName} ." - " .$response->{$snmpIfAlias} ;
+}else{
+ $name = $response->{$snmpIfDescr} ;
+}
- } else {
- $state = 'OK';
- $answer = "Interface $name (index $snmpkey) is up.";
- }
+## if AdminStatus is down - some one made a consious effort to change config
+##
+if ( not ($response->{$snmpIfAdminStatus} == 1) ) {
+ $answer = "Interface $name (index $snmpkey) is administratively down.";
+ if ( not defined $adminWarn or $adminWarn eq "w" ) {
+ $state = 'WARNING';
+ } elsif ( $adminWarn eq "i" ) {
+ $state = 'OK';
+ } elsif ( $adminWarn eq "c" ) {
+ $state = 'CRITICAL';
+ } else { # If wrong value for -a, say warning
+ $state = 'WARNING';
+ }
+}
+## Check operational status
+elsif ( $response->{$snmpIfOperStatus} == 2 ) {
+ $state = 'CRITICAL';
+ $answer = "Interface $name (index $snmpkey) is down.";
+} elsif ( $response->{$snmpIfOperStatus} == 5 ) {
+ if (defined $dormantWarn ) {
+ if ($dormantWarn eq "w") {
+ $state = 'WARNING';
+ $answer = "Interface $name (index $snmpkey) is dormant.";
+ }elsif($dormantWarn eq "c") {
+ $state = 'CRITICAL';
+ $answer = "Interface $name (index $snmpkey) is dormant.";
+ }elsif($dormantWarn eq "i") {
+ $state = 'OK';
+ $answer = "Interface $name (index $snmpkey) is dormant.";
+ }
+ }else{
+ # dormant interface - but warning/critical/ignore not requested
+ $state = 'CRITICAL';
+ $answer = "Interface $name (index $snmpkey) is dormant.";
+ }
+} elsif ( $response->{$snmpIfOperStatus} == 6 ) {
+ $state = 'CRITICAL';
+ $answer = "Interface $name (index $snmpkey) notPresent - possible hotswap in progress.";
+} elsif ( $response->{$snmpIfOperStatus} == 7 ) {
+ $state = 'CRITICAL';
+ $answer = "Interface $name (index $snmpkey) down due to lower layer being down.";
+} elsif ( $response->{$snmpIfOperStatus} == 3 || $response->{$snmpIfOperStatus} == 4 ) {
+ $state = 'CRITICAL';
+ $answer = "Interface $name (index $snmpkey) down (testing/unknown).";
+} else {
+ $state = 'OK';
+ $answer = "Interface $name (index $snmpkey) is up.";
+}
-print ("$state: $answer");
+print ("$state: $answer\n");
exit $ERRORS{$state};
### subroutines
-sub fetch_ifdescr {
- if (!defined ($response = $session->get_table($snmpIfDescr))) {
+sub fetch_ifindex {
+ my $oid = shift;
+ my $lookup = shift;
+
+ if (!defined ($response = $session->get_table($oid))) {
$answer=$session->error;
$session->close;
$state = 'CRITICAL';
}
foreach $key ( keys %{$response}) {
- if ($response->{$key} =~ /^$ifdescr$/) {
+ if ($response->{$key} =~ /^$lookup$/) {
$key =~ /.*\.(\d+)$/;
$snmpkey = $1;
- #print "$ifdescr = $key / $snmpkey \n"; #debug
+ #print "$lookup = $key / $snmpkey \n"; #debug
}
}
unless (defined $snmpkey) {
return $snmpkey;
}
-sub usage() {
- printf "\nMissing arguments!\n";
- printf "\n";
- printf "usage: \n";
- printf "check_ifoperstatus -k <IF_KEY> -H <HOSTNAME> [-C <community>]\n";
- printf "Copyright (C) 2000 Christoph Kron\n";
- printf "check_ifoperstatus.pl comes with ABSOLUTELY NO WARRANTY\n";
- printf "This programm is licensed under the terms of the ";
- printf "GNU General Public License\n(check source code for details)\n";
- printf "\n\n";
- exit $ERRORS{"UNKNOWN"};
+sub usage($) {
+ print "$_[0]\n";
+ print_usage();
+ exit $ERRORS{"UNKNOWN"};
+}
+
+sub print_usage() {
+ printf "\n";
+ printf "usage: \n";
+ printf "check_ifoperstatus -k <IF_KEY> -H <HOSTNAME> [-C <community>]\n";
+ printf "Copyright (C) 2000 Christoph Kron\n";
+ printf "check_ifoperstatus.pl comes with ABSOLUTELY NO WARRANTY\n";
+ printf "This programm is licensed under the terms of the ";
+ printf "GNU General Public License\n(check source code for details)\n";
+ printf "\n\n";
}
sub print_help() {
+ print_revision($PROGNAME, '@NP_VERSION@');
+ print_usage();
printf "check_ifoperstatus plugin for Nagios monitors operational \n";
- printf "status of a particular network interface on the target host\n";
+ printf "status of a particular 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 " if monitoring with -d\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)";
+ 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 " 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 " -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 " 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 " -k (--key) SNMP IfIndex value\n";
printf " -d (--descr) SNMP ifDescr value\n";
+ printf " -T (--type) SNMP ifType integer value (see http://www.iana.org/assignments/ianaiftype-mib)\n";
printf " -p (--port) SNMP port (default 161)\n";
- printf " -I (--ifmib) Agent supports IFMIB ifXTable. Do not use if\n";
+ printf " -I (--ifmib) Agent supports IFMIB ifXTable. Do not use if\n";
printf " you don't know what this is. \n";
printf " -n (--name) the value should match the returned ifName\n";
printf " (Implies the use of -I)\n";
printf " -w (--warn =i|w|c) ignore|warn|crit if the interface is dormant (default critical)\n";
+ printf " -D (--admin-down =i|w|c) same for administratively down interfaces (default warning)\n";
printf " -M (--maxmsgsize) Max message size - usefull only for v1 or v2c\n";
printf " -t (--timeout) seconds before the plugin times out (default=$TIMEOUT)\n";
printf " -V (--version) Plugin version\n";
printf " -h (--help) usage help \n\n";
- printf " -k or -d must be specified\n\n";
- printf "Note: either -k or -d must be specified and -d is much more network \n";
+ printf " -k or -d or -T must be specified\n\n";
+ printf "Note: either -k or -d or -T must be specified and -d and -T are much more network \n";
printf "intensive. Use it sparingly or not at all. -n is used to match against\n";
printf "a much more descriptive ifName value in the IfXTable to verify that the\n";
printf "snmpkey has not changed to some other network interface after a reboot.\n\n";
- print_revision($PROGNAME, '$Revision$');
}
"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,
"k=i" => \$snmpkey, "key=i",\$snmpkey,
"d=s" => \$ifdescr, "descr=s" => \$ifdescr,
"l=s" => \$lastc, "lastchange=s" => \$lastc,
"p=i" => \$port, "port=i" =>\$port,
"H=s" => \$hostname, "hostname=s" => \$hostname,
- "I" => \$ifXTable, "ifmib" => \$ifXTable,
+ "I" => \$ifXTable, "ifmib" => \$ifXTable,
"n=s" => \$ifName, "name=s" => \$ifName,
"w=s" => \$dormantWarn, "warn=s" => \$dormantWarn,
+ "D=s" => \$adminWarn, "admin-down=s" => \$adminWarn,
"M=i" => \$maxmsgsize, "maxmsgsize=i" => \$maxmsgsize,
"t=i" => \$timeout, "timeout=i" => \$timeout,
+ "T=i" => \$iftype, "type=i" => \$iftype,
);
-
if ($status == 0){
print_help();
exit $ERRORS{'OK'};
}
-
+
if ($opt_V) {
- print_revision($PROGNAME,'$Revision$ ');
+ print_revision($PROGNAME,'@NP_VERSION@');
exit $ERRORS{'OK'};
}
}
if (! utils::is_hostname($hostname)){
- usage();
- exit $ERRORS{"UNKNOWN"};
+ usage("Hostname invalid or not given");
}
-
- unless ($snmpkey > 0 || defined $ifdescr){
- printf "Either a valid snmpkey key (-k) or a ifDescr (-d) must be provided)\n";
- usage();
- exit $ERRORS{"UNKNOWN"};
+ unless ($snmpkey > 0 || defined $ifdescr || defined $iftype){
+ usage("Either a valid snmp key (-k) or a ifDescr (-d) must be provided");
}
-
- if (defined $name) {
+ if (defined $ifName) {
$ifXTable=1;
}
$timeout = $TIMEOUT;
}
+ if ($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) {
+ if (defined $seclevel && defined $secname) {
+ $session_opts{'-username'} = $secname;
# Must define a security level even though defualt is noAuthNoPriv
- unless ($seclevel eq ('noAuthNoPriv' || 'authNoPriv' || 'authPriv' ) ) {
- usage();
- exit $ERRORS{"UNKNOWN"};
+ unless ( grep /^$seclevel$/, qw(noAuthNoPriv authNoPriv authPriv) ) {
+ usage("Must define a valid security level even though default is noAuthNoPriv");
}
# Authentication wanted
- if ($seclevel eq ('authNoPriv' || 'authPriv') ) {
-
- unless ($authproto eq ('MD5' || 'SHA1') ) {
- usage();
- exit $ERRORS{"UNKNOWN"};
+ 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();
- exit $ERRORS{"UNKNOWN"};
+ usage("Auth password/key is not defined");
}else{
if ($authpass =~ /^0x/ ) {
- $auth = "-authkey => $authpass" ;
+ $session_opts{'-authkey'} = $authpass ;
}else{
- $auth = "-authpassword => $authpass";
+ $session_opts{'-authpassword'} = $authpass ;
}
}
-
}
# Privacy (DES encryption) wanted
- if ($seclevel eq 'authPriv' ) {
+ if ($seclevel eq 'authPriv' ) {
if (! defined $privpass) {
- usage();
- exit $ERRORS{"UNKNOWN"};
+ usage("Privacy passphrase/key is not defined");
}else{
if ($privpass =~ /^0x/){
- $priv = "-privkey => $privpass";
+ $session_opts{'-privkey'} = $privpass;
}else{
- $priv = "-privpassword => $privpass";
+ $session_opts{'-privpassword'} = $privpass;
}
}
+
+ $session_opts{'-privprotocol'} = $privproto if(defined $privproto);
}
# Context name defined or default
-
unless ( defined $context) {
$context = "";
}
-
-
}else {
- usage();
- exit $ERRORS{'UNKNOWN'}; ;
+ usage("Security level or name is not defined");
}
} # end snmpv3
- if ( $snmp_version =~ /[12]/ ) {
- ($session, $error) = Net::SNMP->session(
- -hostname => $hostname,
- -community => $community,
- -port => $port,
- -version => $snmp_version,
- -maxmsgsize => $maxmsgsize
- );
-
- if (!defined($session)) {
- $state='UNKNOWN';
- $answer=$error;
- print ("$state: $answer");
- exit $ERRORS{$state};
- }
-
- }elsif ( $snmp_version =~ /3/ ) {
-
- if ($seclevel eq 'noAuthNoPriv') {
- ($session, $error) = Net::SNMP->session(
- -hostname => $hostname,
- -port => $port,
- -version => $snmp_version,
- -username => $secname,
- );
-
- }elsif ( $seclevel eq 'authNoPriv' ) {
- ($session, $error) = Net::SNMP->session(
- -hostname => $hostname,
- -port => $port,
- -version => $snmp_version,
- -username => $secname,
- $auth,
- -authprotocol => $authproto,
- );
- }elsif ($seclevel eq 'authPriv' ) {
- ($session, $error) = Net::SNMP->session(
- -hostname => $hostname,
- -port => $port,
- -version => $snmp_version,
- -username => $secname,
- $auth,
- -authprotocol => $authproto,
- $priv
- );
- }
-
-
- if (!defined($session)) {
- $state='UNKNOWN';
- $answer=$error;
- print ("$state: $answer");
- exit $ERRORS{$state};
- }
-
- }else{
- $state='UNKNOWN';
- print ("$state: No support for SNMP v$snmp_version yet\n");
- exit $ERRORS{$state};
- }
-
}
## End validation