#!/usr/bin/perl -w ############################## check_snmp_load ################# my $Version='1.0'; # Date : 2009/11/23 # Author : Mathias Mahnke # Licence : GPL - http://www.fsf.org/licenses/gpl.txt # Contributors : Patrick Proy (check_snmp_cpu) ################################################################# # # Help : ./check_cisco_ips.pl -h # use strict; use Net::SNMP; use Getopt::Long; # Nagios specific my $TIMEOUT = 15; my %ERRORS=('OK'=>0,'WARNING'=>1,'CRITICAL'=>2,'UNKNOWN'=>3,'DEPENDENT'=>4); # SNMP Datas # Cisco IPS CPU my $cisco_cpu_5m = "1.3.6.1.4.1.9.9.109.1.1.1.1.8.1"; # Cisco CPU load (5min %) my $cisco_cpu_1m = "1.3.6.1.4.1.9.9.109.1.1.1.1.7.1"; # Cisco CPU load (1min %) my $cisco_cpu_5s = "1.3.6.1.4.1.9.9.109.1.1.1.1.6.1"; # Cisco CPU load (5sec %) # Cisco IPS Memory my $cisco_mem_used = "1.3.6.1.4.1.9.9.221.1.1.1.1.7.1.1"; # Cisco Mem Used my $cisco_mem_free = "1.3.6.1.4.1.9.9.221.1.1.1.1.8.1.1"; # Cisco Mem Free # Cisco IPS Health my $cisco_hea_loss = "1.3.6.1.4.1.9.9.383.1.4.1.0"; # HealthPacketLoss my $cisco_hea_rate = "1.3.6.1.4.1.9.9.383.1.4.2.0"; # HealthPacketDenialRate my $cisco_hea_mem = "1.3.6.1.4.1.9.9.383.1.4.14.0"; # HealthIsSensorMemoryCritical my $cisco_hea_act = "1.3.6.1.4.1.9.9.383.1.4.15.0"; # HealthIsSensorActive # valid values my @valid_types = ("cpu","mem","health"); # Globals 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 # check type : cpu | mem my $o_check_type= "cpu"; # End compatibility my $o_warn= undef; # warning level my @o_warnL= undef; # warning levels for Linux Load or Cisco CPU my $o_crit= undef; # critical level my @o_critL= undef; # critical level for Linux Load or Cisco CPU my $o_timeout= undef; # Timeout (Default 5) my $o_perf= undef; # Output performance data my $o_version2= undef; # use snmp v2c # 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_cisco_ips version : $Version\n"; } sub print_usage { print "Usage: $0 [-v] -H -C [-2] | (-l login -x passwd [-X pass -L ,]) [-p ] -w -c -T [cpu|mem|health] [-f] [-t ] [-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 help { print "\nSNMP Cisco IPS Monitor for Nagios version ",$Version,"\n"; print "GPL licence, 2009 Mathias Mahnke\n\n"; print_usage(); print <, : Authentication protocol (md5|sha : default md5) : Priv protocole (des|aes : default des) -P, --port=PORT SNMP port (Default 161) -w, --warn=INTEGER | INT,INT,INT 1 value check : warning level for cpu in percent (on one minute) 3 value check : comma separated level for load or cpu for 1min, 5min, 15min -c, --crit=INTEGER | INT,INT,INT critical level for cpu in percent (on one minute) 1 value check : critical level for cpu in percent (on one minute) 3 value check : comma separated level for load or cpu for 1min, 5min, 15min -T, --type=cpu|mem|health IPS check : cpu : Cisco IPS CPU usage mem : Cisco IPS memory usage health : Cisco IPS health status -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, 'c:s' => \$o_crit, 'critical:s' => \$o_crit, 'w:s' => \$o_warn, 'warn:s' => \$o_warn, 'f' => \$o_perf, 'perfparse' => \$o_perf, 'T:s' => \$o_check_type, 'type:s' => \$o_check_type ); # check the -T option my $T_option_valid=0; foreach (@valid_types) { if ($_ eq $o_check_type) {$T_option_valid=1} }; if ( $T_option_valid == 0 ) {print "Invalid check type (-T)!\n"; print_usage(); exit $ERRORS{"UNKNOWN"}} # Basic checks if (defined($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 $ERRORS{"UNKNOWN"}} } # Check warnings and critical if (!defined($o_warn) || !defined($o_crit)) { print "put warning and critical info!\n"; print_usage(); exit $ERRORS{"UNKNOWN"}} # Get rid of % sign $o_warn =~ s/\%//g; $o_crit =~ s/\%//g; # Check for multiple warning and crit in case of -L if ($o_check_type eq "cpu") { @o_warnL=split(/,/ , $o_warn); @o_critL=split(/,/ , $o_crit); if (($#o_warnL != 2) || ($#o_critL != 2)) { print "3 warnings and critical !\n";print_usage(); exit $ERRORS{"UNKNOWN"}} for (my $i=0;$i<3;$i++) { if ( isnnum($o_warnL[$i]) || isnnum($o_critL[$i])) { print "Numeric value for warning or critical !\n";print_usage(); exit $ERRORS{"UNKNOWN"}} if ($o_warnL[$i] > $o_critL[$i]) { print "warning <= critical ! \n";print_usage(); exit $ERRORS{"UNKNOWN"}} } } else { if ($o_check_type eq "health") { @o_warnL=split(/,/ , $o_warn); @o_critL=split(/,/ , $o_crit); if (($#o_warnL != 3) || ($#o_critL != 3)) { print "4 warnings and critical !\n";print_usage(); exit $ERRORS{"UNKNOWN"}} for (my $i=0;$i<4;$i++) { if ( isnnum($o_warnL[$i]) || isnnum($o_critL[$i])) { print "Numeric value for warning or critical !\n";print_usage(); exit $ERRORS{"UNKNOWN"}} if ($i>0 && ($o_warnL[$i] > $o_critL[$i])) { print "warning <= critical ! \n";print_usage(); exit $ERRORS{"UNKNOWN"}} } } else { if (($o_warn =~ /,/) || ($o_crit =~ /,/)) { { print "Multiple warning/critical levels not available for this check\n";print_usage(); exit $ERRORS{"UNKNOWN"}} } if ( isnnum($o_warn) || isnnum($o_crit) ) { print "Numeric value for warning or critical !\n";print_usage(); exit $ERRORS{"UNKNOWN"}} if ($o_warn > $o_crit) { print "warning <= critical ! \n";print_usage(); exit $ERRORS{"UNKNOWN"}} } } } ########## MAIN ####### check_options(); # Check gobal timeout if snmp screws up if (defined($TIMEOUT)) { verb("Alarm at $TIMEOUT + 5"); alarm($TIMEOUT+5); } else { verb("no global timeout defined : $o_timeout + 10"); alarm ($o_timeout+10); } $SIG{'ALRM'} = sub { print "No answer from host\n"; exit $ERRORS{"UNKNOWN"}; }; # Connect to host my ($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"}; } my $exit_val=undef; ############## Cisco IPS CPU check ################ if ($o_check_type eq "cpu") { my @oidlists = ($cisco_cpu_5m, $cisco_cpu_1m, $cisco_cpu_5s); my $resultat = (Net::SNMP->VERSION < 4) ? $session->get_request(@oidlists) : $session->get_request(-varbindlist => \@oidlists); if (!defined($resultat)) { printf("ERROR: Description table : %s.\n", $session->error); $session->close; exit $ERRORS{"UNKNOWN"}; } $session->close; if (!defined ($$resultat{$cisco_cpu_5s})) { print "No CPU information : UNKNOWN\n"; exit $ERRORS{"UNKNOWN"}; } my @load = undef; $load[0]=$$resultat{$cisco_cpu_5s}; $load[1]=$$resultat{$cisco_cpu_1m}; $load[2]=$$resultat{$cisco_cpu_5m}; print "Cisco IPS CPU : 5sec = $load[0] %, 2min = $load[1] %, 5min = $load[2] % :"; $exit_val=$ERRORS{"OK"}; for (my $i=0;$i<3;$i++) { if ( $load[$i] > $o_critL[$i] ) { print " $load[$i] > $o_critL[$i] : CRITICAL"; $exit_val=$ERRORS{"CRITICAL"}; } if ( $load[$i] > $o_warnL[$i] ) { # output warn error only if no critical was found if ($exit_val eq $ERRORS{"OK"}) { print " $load[$i] > $o_warnL[$i] : WARNING"; $exit_val=$ERRORS{"WARNING"}; } } } print " OK" if ($exit_val eq $ERRORS{"OK"}); if (defined($o_perf)) { print " | load_5_sec=$load[0]%;$o_warnL[0];$o_critL[0] "; print "load_1_min=$load[1]%;$o_warnL[1];$o_critL[1] "; print "load_5_min=$load[2]%;$o_warnL[2];$o_critL[2]\n"; } else { print "\n"; } exit $exit_val; } ############## Cisco IPS memory check ################ if ($o_check_type eq "mem") { my @oidlists = ($cisco_mem_used, $cisco_mem_free); my $resultat = (Net::SNMP->VERSION < 4) ? $session->get_request(@oidlists) : $session->get_request(-varbindlist => \@oidlists); if (!defined($resultat)) { printf("ERROR: Description table : %s.\n", $session->error); $session->close; exit $ERRORS{"UNKNOWN"}; } $session->close; if (!defined ($$resultat{$cisco_mem_used})) { print "No Memory information : UNKNOWN\n"; exit $ERRORS{"UNKNOWN"}; } my @load = undef; $load[0]=int($$resultat{$cisco_mem_used}/1024/1024); $load[1]=int($$resultat{$cisco_mem_free}/1024/1024); $load[2]=int($load[0]/($load[0]+$load[1])*100); print "Cisco IPS Memory : used = $load[0] MB, free = $load[1] MB, utilization = $load[2] % :"; $exit_val=$ERRORS{"OK"}; if ( $load[2] > $o_crit ) { print " $load[2] > $o_crit : CRITICAL"; $exit_val=$ERRORS{"CRITICAL"}; } if ( $load[2] > $o_warn ) { # output warn error only if no critical was found if ($exit_val eq $ERRORS{"OK"}) { print " $load[2] > $o_warn : WARNING"; $exit_val=$ERRORS{"WARNING"}; } } print " OK" if ($exit_val eq $ERRORS{"OK"}); if (defined($o_perf)) { print " | utilization=$load[2]%;$o_warnL[0];$o_crit "; } else { print "\n"; } exit $exit_val; } ############## Cisco IPS health check ################ if ($o_check_type eq "health") { my @oidlists = ($cisco_hea_loss, $cisco_hea_rate, $cisco_hea_mem, $cisco_hea_act); my $resultat = (Net::SNMP->VERSION < 4) ? $session->get_request(@oidlists) : $session->get_request(-varbindlist => \@oidlists); if (!defined($resultat)) { printf("ERROR: Description table : %s.\n", $session->error); $session->close; exit $ERRORS{"UNKNOWN"}; } $session->close; if (!defined ($$resultat{$cisco_hea_act})) { print "No health information : UNKNOWN\n"; exit $ERRORS{"UNKNOWN"}; } my @load = undef; $load[0]=1-$$resultat{$cisco_hea_act}; $load[1]=$$resultat{$cisco_hea_mem}; $load[2]=$$resultat{$cisco_hea_loss}; $load[3]=$$resultat{$cisco_hea_rate}; print "Cisco IPS Health : inactive = $load[0], memory critical = $load[1], packet loss = $load[2] %, packet deny rate = $load[3] % :"; $exit_val=$ERRORS{"OK"}; for (my $i=0;$i<4;$i++) { if ( $load[$i] > $o_critL[$i] ) { print " $load[$i] > $o_critL[$i] : CRITICAL"; $exit_val=$ERRORS{"CRITICAL"}; } if ( $load[$i] > $o_warnL[$i] ) { # output warn error only if no critical was found if ($exit_val eq $ERRORS{"OK"}) { print " $load[$i] > $o_warnL[$i] : WARNING"; $exit_val=$ERRORS{"WARNING"}; } } } print " OK" if ($exit_val eq $ERRORS{"OK"}); if (defined($o_perf)) { print " | load_5_sec=$load[0]%;$o_warnL[0];$o_critL[0] "; print "load_1_min=$load[1]%;$o_warnL[1];$o_critL[1] "; print "load_5_min=$load[2]%;$o_warnL[2];$o_critL[2]\n"; } else { print "\n"; } exit $exit_val; }