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nagios-snmp-plugins/check_snmp_css.pl

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#!/usr/bin/perl -w
############################## check_snmp_css.pl #################
# Version : 1.0.1
# Date : 27 Sept 2006
# Author : Patrick Proy ( patrick at proy.org)
# Help : http://www.manubulon.com/nagios/
# Licence : GPL - http://www.fsf.org/licenses/gpl.txt
# Changelog :
# Contributors :
#################################################################
#
# Help : ./check_snmp_css.pl -h
#
use strict;
use Net::SNMP;
use Getopt::Long;
# Nagios specific
use lib "/usr/local/nagios/libexec";
use utils qw(%ERRORS $TIMEOUT);
#my $TIMEOUT = 15;
#my %ERRORS=('OK'=>0,'WARNING'=>1,'CRITICAL'=>2,'UNKNOWN'=>3,'DEPENDENT'=>4);
# SNMP Datas
my $css_svc_table = "1.3.6.1.4.1.9.9.368.1.15.2.1"; # Svc table
my $css_svc_name = "1.3.6.1.4.1.9.9.368.1.15.2.1.1"; # Service Name / apSvcName
my $css_svc_index = "1.3.6.1.4.1.9.9.368.1.15.2.1.2"; # apSvcIndex
my $css_svc_enable = "1.3.6.1.4.1.9.9.368.1.15.2.1.12"; # apSvcEnable
my $css_svc_state= "1.3.6.1.4.1.9.9.368.1.15.2.1.17"; # apSvcState : suspended(1), down(2), alive(4), dying(5)
my $css_svc_maxconn = "1.3.6.1.4.1.9.9.368.1.15.2.1.19"; # Max connexions / apSvcMaxConnections
my $css_svc_conn = "1.3.6.1.4.1.9.9.368.1.15.2.1.20"; # apSvcConnections
my $css_svc_avgresp = "1.3.6.1.4.1.9.9.368.1.15.2.1.65"; # apSvcAvgResponseTime : average response time
my $css_svc_maxresp = "1.3.6.1.4.1.9.9.368.1.15.2.1.66"; # apSvcPeakAvgResponseTime : peak response time
my @css_svc_state_txt= ("","suspended","down","","alive","dying");
my @css_svc_state_nag= (3,2,2,3,0,2);
# Globals
my $Version='1.0';
my $o_host = undef; # hostname
my $o_community = undef; # community
my $o_port = 161; # port
my $o_help= undef; # wan't some help ?
my $o_verb= undef; # verbose mode
my $o_version= undef; # print version
my $o_timeout= undef; # Timeout (Default 5)
my $o_perf= undef; # Output performance data
my $o_version2= undef; # use snmp v2c
#Specific
my $o_dir= "/tmp/"; # Directory to store temp file in it.
my $o_dir_set= undef; # defined if names and index must be read form file.
my $o_name= undef; # service name (regexp)
my $o_warn_number= undef; # minimum number of service before warning
my $o_crit_number= undef; # minimum number of service before critical
my $o_warn_conn= undef; # % of max connexions for warning level
my $o_crit_conn= undef; # % of max connexions for critical level
my $o_warn_resp= undef; # average response time for warning level
my $o_crit_resp= undef; # average response time for critical level
my @o_levels= undef;
# SNMPv3 specific
my $o_login= undef; # Login for snmpv3
my $o_passwd= undef; # Pass for snmpv3
my $v3protocols=undef; # V3 protocol list.
my $o_authproto='md5'; # Auth protocol
my $o_privproto='des'; # Priv protocol
my $o_privpass= undef; # priv password
# functions
sub p_version { print "check_snmp_css version : $Version\n"; }
sub print_usage {
print "Usage: $0 [-v] -H <host> -C <snmp_community> [-2] | (-l login -x passwd [-X pass -L <authp>,<privp>]) -n <name> [-d directory] [-w <num>,<resp>,<conn> -c <num>,<resp>,<conn>] [-p <port>] [-f] [-t <timeout>] [-V]\n";
}
sub isnnum { # Return true if arg is not a number
my $num = shift;
if ( $num =~ /^-?(\d+\.?\d*)|(^\.\d+)$/ ) { return 0 ;}
return 1;
}
sub set_status { # return worst status with this order : OK, unknwonw, warning, critical
my $new_status=shift;
my $cur_status=shift;
if (($cur_status == 0)|| ($new_status==$cur_status)){ return $new_status; }
if ($new_status==3) { return $cur_status; }
if ($new_status > $cur_status) {return $new_status;}
return $cur_status;
}
sub is_pattern_valid { # Test for things like "<I\s*[^>" or "+5-i"
my $pat = shift;
if (!defined($pat)) { $pat=" ";} # Just to get rid of compilation time warnings
return eval { "" =~ /$pat/; 1 } || 0;
}
sub round ($$) {
sprintf "%.$_[1]f", $_[0];
}
sub help {
print "\nSNMP Cisco CSS monitor for Nagios version ",$Version,"\n";
print "(c)2004-2006 Patrick Proy\n\n";
print_usage();
print <<EOT;
-v, --verbose
print extra debugging information
-h, --help
print this help message
-H, --hostname=HOST
name or IP address of host to check
-n, --name=<name>
regexp to select service
-w, --warning=<num>,<resp>,<conn>
Optional. Warning level for
- minimum number of active & alive service
- average response time
- number of connexions
For no warnings, put -1 (ex : -w5,-1,3).
When using negative numbers, dont put space after "-w"
-d, --dir=<directory to put file>
Directory where the temp file with index, created by check_snmp_css_main.pl, can be found
If no directory is set, /tmp will be used
-c, --critical=<num>,resp>,<conn>
Optional. Critical levels (-1 for no critical levels)
See warning levels.
-C, --community=COMMUNITY NAME
community name for the host's SNMP agent (implies v1 protocol)
-2, --v2c
Use snmp v2c
-l, --login=LOGIN ; -x, --passwd=PASSWD
Login and auth password for snmpv3 authentication
If no priv password exists, implies AuthNoPriv
-X, --privpass=PASSWD
Priv password for snmpv3 (AuthPriv protocol)
-L, --protocols=<authproto>,<privproto>
<authproto> : Authentication protocol (md5|sha : default md5)
<privproto> : Priv protocole (des|aes : default des)
-P, --port=PORT
SNMP port (Default 161)
-f, --perfparse
Perfparse compatible output
-t, --timeout=INTEGER
timeout for SNMP in seconds (Default: 5)
-V, --version
prints version number
EOT
}
# For verbose output
sub verb { my $t=shift; print $t,"\n" if defined($o_verb) ; }
sub check_options {
Getopt::Long::Configure ("bundling");
GetOptions(
'v' => \$o_verb, 'verbose' => \$o_verb,
'h' => \$o_help, 'help' => \$o_help,
'H:s' => \$o_host, 'hostname:s' => \$o_host,
'p:i' => \$o_port, 'port:i' => \$o_port,
'C:s' => \$o_community, 'community:s' => \$o_community,
'l:s' => \$o_login, 'login:s' => \$o_login,
'x:s' => \$o_passwd, 'passwd:s' => \$o_passwd,
'X:s' => \$o_privpass, 'privpass:s' => \$o_privpass,
'L:s' => \$v3protocols, 'protocols:s' => \$v3protocols,
't:i' => \$o_timeout, 'timeout:i' => \$o_timeout,
'V' => \$o_version, 'version' => \$o_version,
'2' => \$o_version2, 'v2c' => \$o_version2,
'f' => \$o_perf, 'perfparse' => \$o_perf,
'n:s' => \$o_name, 'name:s' => \$o_name,
'w:s' => \$o_warn_conn, 'warning:s' => \$o_warn_conn,
'c:s' => \$o_crit_conn, 'critical:s' => \$o_crit_conn,
'd:s' => \$o_dir_set, 'dir:s' => \$o_dir_set
);
# Basic checks
if (defined($o_timeout) && (isnnum($o_timeout) || ($o_timeout < 2) || ($o_timeout > 60)))
{ print "Timeout must be >1 and <60 !\n"; print_usage(); exit $ERRORS{"UNKNOWN"}}
if (!defined($o_timeout)) {$o_timeout=5;}
if (defined ($o_help) ) { help(); exit $ERRORS{"UNKNOWN"}};
if (defined($o_version)) { p_version(); exit $ERRORS{"UNKNOWN"}};
if ( ! defined($o_host) ) # check host and filter
{ print_usage(); exit $ERRORS{"UNKNOWN"}}
# check snmp information
if ( !defined($o_community) && (!defined($o_login) || !defined($o_passwd)) )
{ print "Put snmp login info!\n"; print_usage(); exit $ERRORS{"UNKNOWN"}}
if ((defined($o_login) || defined($o_passwd)) && (defined($o_community) || defined($o_version2)) )
{ print "Can't mix snmp v1,2c,3 protocols!\n"; print_usage(); exit $ERRORS{"UNKNOWN"}}
if (defined ($v3protocols)) {
if (!defined($o_login)) { print "Put snmp V3 login info with protocols!\n"; print_usage(); exit $ERRORS{"UNKNOWN"}}
my @v3proto=split(/,/,$v3protocols);
if ((defined ($v3proto[0])) && ($v3proto[0] ne "")) {$o_authproto=$v3proto[0]; } # Auth protocol
if (defined ($v3proto[1])) {$o_privproto=$v3proto[1]; } # Priv protocol
if ((defined ($v3proto[1])) && (!defined($o_privpass))) {
print "Put snmp V3 priv login info with priv protocols!\n"; print_usage(); exit $ERRORS{"UNKNOWN"}}
}
if (!defined($o_name) || ! (is_pattern_valid($o_name)))
{print "Need a service name!\n"; print_usage(); exit $ERRORS{"UNKNOWN"}}
if (defined($o_warn_conn)) {
@o_levels=split(/,/,$o_warn_conn);
if (defined($o_levels[0])) {
if (isnnum($o_levels[0])) {print "Need number for warning!\n"; print_usage(); exit $ERRORS{"UNKNOWN"}}
if ($o_levels[0] != -1 ) {$o_warn_number=$o_levels[0];}
}
if (defined($o_levels[1])) {
if (isnnum($o_levels[1])) {print "Need number for warning!\n"; print_usage(); exit $ERRORS{"UNKNOWN"}}
if ($o_levels[1] != -1 ) {$o_warn_conn=$o_levels[1];} else {$o_warn_conn=undef;}
} else {$o_warn_conn=undef;}
if (defined($o_levels[2]) ) {
if (isnnum($o_levels[2])) {print "Need number for warning!\n"; print_usage(); exit $ERRORS{"UNKNOWN"}}
if ($o_levels[2] != -1 ) {$o_warn_resp=$o_levels[2];}
}
}
if (defined($o_crit_conn)) {
@o_levels=split(/,/,$o_crit_conn);
if (defined($o_levels[0]) ) {
if (isnnum($o_levels[0])) {print "Need number for critical!\n"; print_usage(); exit $ERRORS{"UNKNOWN"}}
if ($o_levels[0] != -1 ) {
$o_crit_number=$o_levels[0];
if (defined($o_warn_number) && ($o_crit_number>=$o_warn_number))
{print "critical must be < warning!\n"; print_usage(); exit $ERRORS{"UNKNOWN"}}
}
}
if (defined($o_levels[1]) ) {
if (isnnum($o_levels[1])) {print "Need number for critical!\n"; print_usage(); exit $ERRORS{"UNKNOWN"}}
if ($o_levels[1] != -1 ) {
$o_crit_conn=$o_levels[1];
if (defined($o_warn_conn) && ($o_warn_conn>=$o_crit_conn))
{print "critical must be > warning!\n"; print_usage(); exit $ERRORS{"UNKNOWN"}}
} else {$o_crit_conn=undef;}
} else {$o_crit_conn=undef;}
if (defined($o_levels[2]) ) {
if (isnnum($o_levels[2])) {print "Need number for critical!\n"; print_usage(); exit $ERRORS{"UNKNOWN"}}
if ($o_levels[2] != -1 ) {
$o_crit_resp=$o_levels[1];
if (defined($o_warn_resp) && ($o_warn_resp>=$o_crit_resp))
{print "critical must be > warning!\n"; print_usage(); exit $ERRORS{"UNKNOWN"}}
}
}
}
if (defined($o_dir_set)) {
if ($o_dir_set ne "") {$o_dir=$o_dir_set;}
verb("Tmp directory : $o_dir");
}
}
########## MAIN #######
check_options();
# Check gobal timeout if snmp screws up
if (defined($TIMEOUT)) {
verb("Alarm at $TIMEOUT + 5");
alarm($TIMEOUT+5);
} else {
verb("no global timeout defined : $o_timeout + 10");
alarm ($o_timeout+10);
}
# Connect to host
my ($session,$error);
if ( defined($o_login) && defined($o_passwd)) {
# SNMPv3 login
verb("SNMPv3 login");
if (!defined ($o_privpass)) {
verb("SNMPv3 AuthNoPriv login : $o_login, $o_authproto");
($session, $error) = Net::SNMP->session(
-hostname => $o_host,
-version => '3',
-username => $o_login,
-authpassword => $o_passwd,
-authprotocol => $o_authproto,
-timeout => $o_timeout
);
} else {
verb("SNMPv3 AuthPriv login : $o_login, $o_authproto, $o_privproto");
($session, $error) = Net::SNMP->session(
-hostname => $o_host,
-version => '3',
-username => $o_login,
-authpassword => $o_passwd,
-authprotocol => $o_authproto,
-privpassword => $o_privpass,
-privprotocol => $o_privproto,
-timeout => $o_timeout
);
}
} else {
if (defined ($o_version2)) {
# SNMPv2 Login
verb("SNMP v2c login");
($session, $error) = Net::SNMP->session(
-hostname => $o_host,
-version => 2,
-community => $o_community,
-port => $o_port,
-timeout => $o_timeout
);
} else {
# SNMPV1 login
verb("SNMP v1 login");
($session, $error) = Net::SNMP->session(
-hostname => $o_host,
-community => $o_community,
-port => $o_port,
-timeout => $o_timeout
);
}
}
if (!defined($session)) {
printf("ERROR opening session: %s.\n", $error);
exit $ERRORS{"UNKNOWN"};
}
$session->max_msg_size(10000);
########### Cisco CSS checks ##############
my (@index,@svcname)=(undef,undef);
my ($numsvc,$numoid,$numoid2)=0;
my (@oid,@oid_list,@oid_list2)=undef;
my $resultat = undef;
# Get load table by snmp or file
if (defined($o_dir_set)) {
my $file_name=$o_dir."/Nagios_css_".$o_host;
my $file_lock=$file_name.".lock";
# Check for lock file during 3 seconds max and quit if sill here.
my $file_timeout=0;
while (-e $file_lock) {
sleep(1);
if ($file_timeout==3) {
print "Lock file remaining for more than 3 sec : UNKNOWN\n";
exit $ERRORS{"UNKNOWN"};
}
$file_timeout++;
}
# Open file for reading.
open(FILE,"< ".$file_name);
while (<FILE>) {
my @file_line=split(/:/,$_);
if ((defined ($file_line[1])) && ($file_line[1] =~ /$o_name/)) { # select service by name
chomp($file_line[1]);
$svcname[$numsvc]=$file_line[1];
my $key = $file_line[0];
verb ("Found : $svcname[$numsvc]");
$index[$numsvc++]=$key;
# Build oid for snmpget
$oid_list[$numoid++]=$css_svc_enable.$key;
$oid_list[$numoid++]=$css_svc_state.$key;
$oid_list2[$numoid2++]=$css_svc_maxconn.$key;
$oid_list2[$numoid2++]=$css_svc_conn.$key;
$oid_list2[$numoid2++]=$css_svc_avgresp.$key;
}
}
close (FILE);
} else {
$resultat = (Net::SNMP->VERSION < 4) ?
$session->get_table($css_svc_name)
: $session->get_table(Baseoid => $css_svc_name);
if (!defined($resultat)) {
printf("ERROR: Description table : %s.\n", $session->error);
$session->close;
exit $ERRORS{"UNKNOWN"};
}
# Get name data & index
foreach my $key ( keys %$resultat) {
verb("OID : $key, Desc : $$resultat{$key}");
if ($$resultat{$key} =~ /$o_name/) { # select service by name
$svcname[$numsvc]=$$resultat{$key};
$key =~ s/$css_svc_name//;
verb ("Found : $svcname[$numsvc]");
$index[$numsvc++]=$key;
# Build oid for snmpget
$oid_list[$numoid++]=$css_svc_enable.$key;
$oid_list[$numoid++]=$css_svc_state.$key;
$oid_list2[$numoid2++]=$css_svc_maxconn.$key;
$oid_list2[$numoid2++]=$css_svc_conn.$key;
$oid_list2[$numoid2++]=$css_svc_avgresp.$key;
}
}
}
# Check if a least one service found
if ($numsvc == 0) {
print "No service matching ",$o_name," found : CRITICAL\n";
exit $ERRORS{"CRITICAL"};
}
$resultat = undef;
$resultat = (Net::SNMP->VERSION < 4) ?
$session->get_request(@oid_list)
: $session->get_request(-varbindlist => \@oid_list);
if (!defined($resultat)) {
printf("ERROR: Status get : %s.\n", $session->error);
$session->close;
exit $ERRORS{"UNKNOWN"};
}
my $resultat2 = undef;
$resultat2 = (Net::SNMP->VERSION < 4) ?
$session->get_request(@oid_list2)
: $session->get_request(-varbindlist => \@oid_list2);
if (!defined($resultat2)) {
printf("ERROR: Conn get : %s.\n", $session->error);
$session->close;
exit $ERRORS{"UNKNOWN"};
}
my $output="";
my $output_perf="";
my $numsvc_ok=0;
my $output_done=0;
my $global_status=0;
for (my $i=0;$i<$numsvc;$i++) {
my $key=$index[$i];
if ($$resultat{$css_svc_enable.$key} == 0 ) {
# service disabled
if ($output ne "") { $output.=", ";}
$output .= $svcname[$i] . " : Disabled";
} else {
if ($css_svc_state_nag[$$resultat{$css_svc_state.$key}] != 0) {
# state not OK
if ($output ne "") { $output.=", ";}
$output .= $svcname[$i] . " : " . $css_svc_state_txt[$$resultat{$css_svc_state.$key}];
} else {
$numsvc_ok++;
$output_done=0;
# state OK
my $prctconn = round(($$resultat2{$css_svc_conn.$key}/$$resultat2{$css_svc_maxconn.$key}) * 100,0);
my $resptime = $$resultat2{$css_svc_avgresp.$key};
if (defined ($o_warn_conn) && ($prctconn>$o_warn_conn)) {
if ($output ne "") { $output.=", ";}
$output .= $svcname[$i]. ":" . $prctconn ."%, ".$resptime."ms";
set_status(1,$global_status);$output_done=1;
}
if (defined ($o_crit_conn) && ($prctconn>$o_crit_conn)) {
if ($output_done==0) {
$output .= $svcname[$i]. ":" . $prctconn ."%, ".$resptime."ms";
$output_done=1;
}
set_status(2,$global_status);
}
if (defined ($o_warn_resp) && ($prctconn>$o_warn_resp)) {
if ($output_done==0) {
$output .= $svcname[$i]. ":" . $prctconn ."%, ".$resptime."ms";
$output_done=1;
}
set_status(1,$global_status);
}
if (defined ($o_crit_resp) && ($prctconn>$o_crit_resp)) {
if ($output_done==0) {
$output .= $svcname[$i]. ":" . $prctconn ."%, ".$resptime."ms";
$output_done=1;
}
set_status(2,$global_status);
}
}
}
}
$output .= " ".$numsvc_ok."/".$numsvc." services OK";
if (($global_status == 2) || ((defined ($o_crit_number)) && ($numsvc_ok<=$o_crit_number)) || ($numsvc_ok==0) ) {
print $output," : CRITICAL\n";
exit $ERRORS{"CRITICAL"}
}
if (($global_status == 1) || ((defined ($o_warn_number)) && ($numsvc_ok<=$o_warn_number))) {
print $output," : WARNING\n";
exit $ERRORS{"WARNING"}
}
print $output," : OK\n";
exit $ERRORS{"OK"};
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