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use POSIX;
use strict;
use lib "/usr/local/nagios/libexec" ;
use utils qw($TIMEOUT %ERRORS &print_revision &support);
use Net::SNMP;
use Getopt::Long;
&Getopt::Long::config('bundling');
my $PROGNAME = "check_f5PoolStatus";
sub print_help ();
sub usage ();
sub process_arguments ();
my $timeout;
my $status;
my $state = "UNKNOWN";
my $answer = "";
my $snmpkey;
my $community = "public";
my $maxmsgsize = 1472 ; # Net::SNMP default is 1472
my ($seclevel, $authproto, $secname, $authpass, $privpass, $auth, $priv, $context);
my $port = 161;
my @snmpoids;
my $snmpBase = '.1.3.6.1.4.1.3375.2.2.10.1.2.1.22';
my $snmpDescription = '.1.3.6.1.4.1.3375.2.2.10.1.2.1.19';
my $snmpVsState = '.1.3.6.1.4.1.3375.2.2.10.1.2.1.25';
my $hostname;
my $free_percent;
my $session;
my $error;
my $response;
my $snmp_version = 2 ;
my $ifXTable;
my $opt_h ;
my $opt_V ;
my $val_h = "1";
my $val_l;
my $key;
my $lastc;
my $PoolDescr;
my $dormantWarn;
my $adminWarn;
my $name;
my $PoolState;
$status = process_arguments();
$SIG{'ALRM'} = sub {
print ("ERROR: No snmp response from $hostname (alarm)\n");
exit $ERRORS{"UNKNOWN"};
};
alarm($timeout);
if (defined $PoolDescr) {
# escape "/" in PoolDescr
$PoolDescr =~ s/\//\\\//g;
$status=fetch_PoolDescr(); # if using on device with large number of interfaces
# recommend use of SNMP v2 (get-bulk)
if (not defined $status) {
$state = "UNKNOWN";
printf "$state: could not retrive PoolDescr snmpkey - $status-$snmpkey\n";
$session->close;
exit $ERRORS{$state};
}
}
$snmpBase = $snmpBase . "." . $snmpkey;
$snmpDescription = $snmpDescription . "." . $snmpkey;
$snmpVsState = $snmpVsState . "." . $snmpkey;
push(@snmpoids,$snmpBase);
push(@snmpoids,$snmpDescription);
push(@snmpoids,$snmpVsState);
if (!defined($response = $session->get_request(@snmpoids))) {
$answer=$session->error;
$session->close;
$state = 'WARNING';
print ("$state: SNMP error: $answer\n");
exit $ERRORS{$state};
}
$PoolState = $response->{$snmpBase};
if (not $PoolState =~ /\d/ ){
$state = 'WARNING';
}elsif ( $PoolState > $val_h ){
$state = 'CRITICAL';
}else{
$state = 'OK';
}
$answer = sprintf("host '%s', %s that VS is %s\n",
$hostname,
$response->{$snmpVsState},
$response->{$snmpDescription},
);
print ("$state: $answer");
exit $ERRORS{$state};
sub fetch_PoolDescr {
if (!defined ($response = $session->get_table($snmpDescription))) {
$answer=$session->error;
$session->close;
$state = 'CRITICAL';
printf ("$state: SNMP error with snmp version $snmp_version ($answer)\n");
$session->close;
exit $ERRORS{$state};
}
foreach $key ( keys %{$response}) {
if ($response->{$key} =~ /^$PoolDescr$/) {
$key =~ /^.*\.3375\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.(.*)$/;
$snmpkey = $1;
#print "$PoolDescr = $key / $snmpkey \n"; #debug
}
}
unless (defined $snmpkey) {
$session->close;
$state = 'CRITICAL';
printf "$state: Could not match $PoolDescr on $hostname\n";
exit $ERRORS{$state};
}
return $snmpkey;
}
sub usage() {
printf "\nMissing arguments!\n";
printf "\n";
printf "usage: \n";
printf "check_f5PoolStatus -k |-P -H [-C ]\n";
printf "Copyright (C) 2007 Jimi^H.\n";
printf "check_f5PoolStatus 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 $ERRORS{"UNKNOWN"};
}
sub print_help() {
printf "check_f5PoolStatus plugin for Nagios monitors operational \n";
printf "status of a particular network interface on the target host\n";
printf "\nUsage:\n";
printf " -H (--hostname) Hostname to query - (required)\n";
printf " -C (--community) SNMP read community (defaults to public,\n";
printf " used with SNMP v1 and v2c\n";
printf " -v (--snmp_version) 1 for SNMP v1 (default)\n";
printf " 2 for SNMP v2c\n";
printf " SNMP v2c will use get_bulk for less overhead\n";
printf " if monitoring with -d\n";
printf " -L (--seclevel) choice of \"noAuthNoPriv\", \"authNoPriv\", or \"authPriv\"\n";
printf " -U (--secname) username for SNMPv3 context\n";
printf " -c (--context) SNMPv3 context name (default is empty string)\n";
printf " -A (--authpass) authentication password (cleartext ascii or localized key\n";
printf " in hex with 0x prefix generated by using \"snmpkey\" utility\n";
printf " auth password and authEngineID\n";
printf " -a (--authproto) Authentication protocol ( MD5 or SHA1)\n";
printf " -X (--privpass) privacy password (cleartext ascii or localized key\n";
printf " in hex with 0x prefix generated by using \"snmpkey\" utility\n";
printf " privacy password and authEngineID\n";
printf " -k (--key) SNMP f5PoolIndex value\n";
printf " -P (--pool) SNMP Pool Name Descr\n";
printf " -p (--port) SNMP port (default 161)\n";
printf " -M (--maxmsgsize) Max message size - usefull only for v1 or v2c\n";
printf " -t (--timeout) seconds before the plugin times out (default=$TIMEOUT)\n";
printf " -V (--version) Plugin version\n";
printf " -h (--help) usage help \n\n";
printf " -k must be specified\n\n";
printf "Note: either -k must be specified\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: 1.7 $');
}
sub process_arguments() {
$status = GetOptions(
"V" => \$opt_V, "version" => \$opt_V,
"h" => \$opt_h, "help" => \$opt_h,
"v=i" => \$snmp_version, "snmp_version=i" => \$snmp_version,
"C=s" => \$community, "community=s" => \$community,
"L=s" => \$seclevel, "seclevel=s" => \$seclevel,
"a=s" => \$authproto, "authproto=s" => \$authproto,
"U=s" => \$secname, "secname=s" => \$secname,
"A=s" => \$authpass, "authpass=s" => \$authpass,
"X=s" => \$privpass, "privpass=s" => \$privpass,
"c=s" => \$context, "context=s" => \$context,
"k=s" => \$snmpkey, "key=s",\$snmpkey,
"P=s" => \$PoolDescr, "pool=s" => \$PoolDescr,
"p=i" => \$port, "port=i" =>\$port,
"H=s" => \$hostname, "hostname=s" => \$hostname,
"w=s" => \$dormantWarn, "warn=s" => \$dormantWarn,
"D=s" => \$adminWarn, "admin-down=s" => \$adminWarn,
"M=i" => \$maxmsgsize, "maxmsgsize=i" => \$maxmsgsize,
"t=i" => \$timeout, "timeout=i" => \$timeout,
);
if ($status == 0){
print_help();
exit $ERRORS{'OK'};
}
if ($opt_V) {
print_revision($PROGNAME,'$Revision: 1.7 $ ');
exit $ERRORS{'OK'};
}
if ($opt_h) {
print_help();
exit $ERRORS{'OK'};
}
if (! utils::is_hostname($hostname)){
usage();
exit $ERRORS{"UNKNOWN"};
}
unless (defined $snmpkey || defined $PoolDescr){
printf "Either a valid snmpkey key (-k) or a pool (-P) must be provided)\n";
usage();
exit $ERRORS{"UNKNOWN"};
}
unless (defined $timeout) {
$timeout = $TIMEOUT;
}
if ($snmp_version =~ /3/ ) {
# Must define a security level even though default is noAuthNoPriv
# v3 requires a security username
if (defined $seclevel && defined $secname) {
# Must define a security level even though defualt is noAuthNoPriv
unless ( grep /^$seclevel$/, qw(noAuthNoPriv authNoPriv authPriv) ) {
usage();
exit $ERRORS{"UNKNOWN"};
}
# Authentication wanted
if ( $seclevel eq 'authNoPriv' || $seclevel eq 'authPriv' ) {
unless ( $authproto eq 'MD5' || $authproto eq 'SHA1' ) {
usage();
exit $ERRORS{"UNKNOWN"};
}
if ( !defined $authpass) {
usage();
exit $ERRORS{"UNKNOWN"};
}else{
if ($authpass =~ /^0x/ ) {
$auth = "-authkey => $authpass" ;
}else{
$auth = "-authpassword => $authpass";
}
}
}
# Privacy (DES encryption) wanted
if ($seclevel eq 'authPriv' ) {
if (! defined $privpass) {
usage();
exit $ERRORS{"UNKNOWN"};
}else{
if ($privpass =~ /^0x/){
$priv = "-privkey => $privpass";
}else{
$priv = "-privpassword => $privpass";
}
}
}
# Context name defined or default
unless ( defined $context) {
$context = "";
}
}else {
usage();
exit $ERRORS{'UNKNOWN'}; ;
}
} # 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};
}
}
本文来自ChinaUnix博客，如果查看原文请点：http://blog.chinaunix.net/u/24312/showart_1005483.html |
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发表于 2008-06-19 16:15