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-rw-r--r--plugins-scripts/check_ifoperstatus.pl156
1 files changed, 128 insertions, 28 deletions
diff --git a/plugins-scripts/check_ifoperstatus.pl b/plugins-scripts/check_ifoperstatus.pl
index 46964677..b5d0bcd1 100644
--- a/plugins-scripts/check_ifoperstatus.pl
+++ b/plugins-scripts/check_ifoperstatus.pl
@@ -2,7 +2,7 @@
#
# check_ifoperstatus.pl - nagios plugin
#
-# Copyright (C) 2000 Christoph Kron
+# Copyright (C) 2000 Christoph Kron,
# Modified 5/2002 to conform to updated Nagios Plugin Guidelines
# Added support for named interfaces per Valdimir Ivaschenko (S. Ghosh)
#
@@ -21,10 +21,16 @@
# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
#
#
-# Report bugs to: ck@zet.net, nagiosplug-help@lists.sf.net
+# 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.
+#
+# Primary MIB reference - RFC 2863
+
use POSIX;
use strict;
@@ -42,7 +48,8 @@ my %ifOperStatus = ('1','up',
'3','testing',
'4','unknown',
'5','dormant',
- '6','notPresent');
+ '6','notPresent',
+ '7','lowerLayerDown'); # down due to the state of lower layer interface(s)
my $state = "UNKNOWN";
my $answer = "";
@@ -50,12 +57,16 @@ my $snmpkey = 0;
my $community = "public";
my $port = 161;
my @snmpoids;
-my $snmpIfDescr = '1.3.6.1.2.1.2.2.1.2';
+my $sysUptime = '1.3.6.1.2.1.1.3.0';
+my $snmpIfDescr = '1.3.6.1.2.1.2.2.1.2';
+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 $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 $snmpIfName = '1.3.6.1.2.1.31.1.1.1.1';
+my $snmpIfLastChange = '1.3.6.1.2.1.2.2.1.9';
+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 $hostname;
+my $ifName;
my $session;
my $error;
my $response;
@@ -65,6 +76,9 @@ my $opt_h ;
my $opt_V ;
my $ifdescr;
my $key;
+my $lastc;
+my $dormantWarn;
+my $name;
@@ -76,6 +90,8 @@ $SIG{'ALRM'} = sub {
#alarm($TIMEOUT);
+### Validate Arguments
+
$status = GetOptions(
"V" => \$opt_V, "version" => \$opt_V,
"h" => \$opt_h, "help" => \$opt_h,
@@ -83,9 +99,12 @@ $status = GetOptions(
"C=s" =>\$community, "community=s" => \$community,
"k=i" =>\$snmpkey, "key=i",\$snmpkey,
"d=s" =>\$ifdescr, "descr=s" => \$ifdescr,
+ "l=s" => \$lastc, "lastchange=s" => \$lastc,
"p=i" =>\$port, "port=i",\$port,
"H=s" => \$hostname, "hostname=s" => \$hostname,
- "I" => \$ifXTable, "ifmib" => \$ifXTable);
+ "I" => \$ifXTable, "ifmib" => \$ifXTable,
+ "n=s" => \$ifName, "name=s" => \$ifName,
+ "w=s" => \$dormantWarn, "warn=s" => \$dormantWarn );
@@ -111,6 +130,17 @@ if (! utils::is_hostname($hostname)){
}
+unless ($snmpkey > 0 || defined $ifdescr){
+ printf "Either a valid snmpkey key (-k) or a ifDescr (-d) must be provided)\n";
+ usage();
+ exit $ERRORS{"UNKNOWN"};
+}
+
+
+if (defined $name) {
+ $ifXTable=1;
+}
+
if ( $snmp_version =~ /[12]/ ) {
($session, $error) = Net::SNMP->session(
-hostname => $hostname,
@@ -135,6 +165,12 @@ if ( $snmp_version =~ /[12]/ ) {
exit $ERRORS{$state};
}
+## End validation
+
+
+
+## map ifdescr to ifindex - should look at being able to cache this value
+
if (defined $ifdescr) {
# escape "/" in ifdescr - very common in the Cisco world
$ifdescr =~ s/\//\\\//g;
@@ -143,31 +179,32 @@ if (defined $ifdescr) {
# recommend use of SNMP v2 (get-bulk)
if ($status==0) {
$state = "UNKNOWN";
- printf "$state: could not retrive ifIndex - $status-$snmpkey\n";
+ printf "$state: could not retrive snmpkey - $status-$snmpkey\n";
$session->close;
exit $ERRORS{$state};
}
}
-if ( $snmpkey == 0 ) {
- printf "ifIndex key cannot be 0\n";
- usage();
- exit $ERRORS{'UNKNOWN'};
-}
- $snmpIfOperStatus = '1.3.6.1.2.1.2.2.1.8' . "." . $snmpkey;
- $snmpIfDescr = '1.3.6.1.2.1.2.2.1.2' . "." . $snmpkey;
- $snmpIfAlias = '1.3.6.1.2.1.31.1.1.1.18' . "." . $snmpkey ;
+## Main function
+
+$snmpIfAdminStatus = $snmpIfAdminStatus . "." . $snmpkey;
+$snmpIfOperStatus = $snmpIfOperStatus . "." . $snmpkey;
+$snmpIfDescr = $snmpIfDescr . "." . $snmpkey;
+$snmpIfName = $snmpIfName . "." . $snmpkey ;
+$snmpIfAlias = $snmpIfAlias . "." . $snmpkey ;
+push(@snmpoids,$snmpIfAdminStatus);
push(@snmpoids,$snmpIfOperStatus);
push(@snmpoids,$snmpIfDescr);
+push(@snmpoids,$snmpIfName) if (defined $ifXTable) ;
push(@snmpoids,$snmpIfAlias) if (defined $ifXTable) ;
if (!defined($response = $session->get_request(@snmpoids))) {
$answer=$session->error;
$session->close;
- $state = 'CRITICAL';
- print ("$state: $answer for ifIndex $snmpkey\n");
+ $state = 'WARNING';
+ print ("$state: SNMP error: $answer\n");
exit $ERRORS{$state};
}
@@ -178,31 +215,87 @@ push(@snmpoids,$snmpIfAlias) if (defined $ifXTable) ;
$ifOperStatus{$response->{$snmpIfOperStatus}}
);
- $session->close;
- if ( $response->{$snmpIfOperStatus} == 1 ) {
- $state = 'OK';
+ ## 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} ;
}
- else {
- $state = 'CRITICAL';
+
+ ## if AdminStatus is down - some one made a consious effort to change config
+ ##
+ if ( not ($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.";
+
+ } 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");
exit $ERRORS{$state};
+### subroutines
+
sub fetch_ifdescr {
if (!defined ($response = $session->get_table($snmpIfDescr))) {
$answer=$session->error;
$session->close;
$state = 'CRITICAL';
- printf ("$state: $answer for $snmpIfDescr with snmp version $snmp_version\n");
+ printf ("$state: SNMP error with snmp version $snmp_version ($answer)\n");
$session->close;
exit $ERRORS{$state};
}
foreach $key ( keys %{$response}) {
- if ($response->{$key} =~ /$ifdescr/) {
+ if ($response->{$key} =~ /^$ifdescr$/) {
$key =~ /.*\.(\d+)$/;
$snmpkey = $1;
#print "$ifdescr = $key / $snmpkey \n"; #debug
@@ -242,14 +335,21 @@ sub print_help {
printf " 2 for SNMP v2c\n";
printf " SNMP v2c will use get_bulk for less overhead\n";
printf " if monitoring with -d\n";
- printf " -k (--key) SNMP ifIndex value\n";
+ printf " -k (--key) SNMP IfIndex value\n";
printf " -d (--descr) SNMP ifDescr value\n";
printf " -p (--port) SNMP port (default 161)\n";
printf " -I (--ifmib) Agent supports IFMIB ifXTable. Do not use if\n";
- printf " you don't know what this is.\n";
+ printf " you don't know what this is. \n";
+ printf " -n (--name) the value should match the returned ifName\n";
+ printf " (Implies the use of -I)\n";
+ printf " -w (--warn =i|w|c) ignore|warn|crit if the interface is dormant (default critical)\n";
printf " -V (--version) Plugin version\n";
printf " -h (--help) usage help \n\n";
printf " -k or -d must be specified\n\n";
+ printf "Note: either -k or -d must be specified and -d is much more network \n";
+ printf "intensive. Use it sparingly or not at all. -n is used to match against\n";
+ printf "a much more descriptive ifName value in the IfXTable to verify that the\n";
+ printf "snmpkey has not changed to some other network interface after a reboot.\n\n";
print_revision($PROGNAME, '$Revision$');
}
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