1 | #!/usr/bin/perl -w |
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2 | # |
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3 | # ============================== SUMMARY ===================================== |
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4 | # |
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5 | # Program : check_uptime.pl |
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6 | # Version : 0.521 |
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7 | # Date : Oct 4, 2012 |
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8 | # Authors : William Leibzon - william@leibzon.org |
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9 | # Licence : GPL - summary below, full text at http://www.fsf.org/licenses/gpl.txt |
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10 | # |
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11 | # =========================== PROGRAM LICENSE ================================= |
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12 | # |
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13 | # This program is free software; you can redistribute it and/or modify |
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14 | # it under the terms of the GNU General Public License as published by |
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15 | # the Free Software Foundation; either version 2 of the License, or |
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16 | # (at your option) any later version. |
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17 | # |
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18 | # This program is distributed in the hope that it will be useful, |
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19 | # but WITHOUT ANY WARRANTY; without even the implied warranty of |
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20 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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21 | # GNU General Public License for more details. |
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22 | # |
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23 | # You should have received a copy of the GNU General Public License |
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24 | # along with this program; if not, write to the Free Software |
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25 | # Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
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26 | # |
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27 | # ===================== INFORMATION ABOUT THIS PLUGIN ========================= |
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28 | # |
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29 | # This plugin returns uptime of the system returning data in text (readable) |
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30 | # format as well as in minutes for performance graphing. The plugin can either |
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31 | # run on local system unix system (that supports standard 'uptime' command |
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32 | # or check remote system by SNMP. The plugin can report one CRITICAL or |
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33 | # WARNING alert if system has been rebooted since last check. |
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34 | # |
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35 | # ====================== SETUP AND PLUGIN USE NOTES ========================= |
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36 | # |
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37 | # The plugin can either retrieve information from local system (when you |
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38 | # run it through check_nrpe for example) or by SNMP from remote system. |
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39 | # |
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40 | # On local system it will execute standard unix 'uptime' and 'uname -a'. |
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41 | # |
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42 | # On a remote system it'll retrieve data from sysSystem for system type |
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43 | # and use that to decide if further data should be retrieved from |
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44 | # sysUptime (OID 1.3.6.1.2.1.1.3.0) for windows or |
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45 | # hostUptime (OID 1.3.6.1.2.1.25.1.1.0) for unix system or |
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46 | # snmpEngineTime (OID 1.3.6.1.6.3.10.2.1.3) for cisco switches |
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47 | # |
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48 | # For information on available options please execute it with --help i.e: |
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49 | # check_uptime.pl --help |
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50 | # |
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51 | # As I dont have time for extensive documentation below is all very brief: |
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52 | # |
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53 | # 1. You can also specify warning and critical thresholds which will |
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54 | # give warning or critical alert if system has been up for lees then |
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55 | # specified number of minutes. Example: |
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56 | # check_uptime.pl -w 5 |
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57 | # Will give warning alert if system has been up for less then 5 minutes |
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58 | # |
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59 | # 2. For performance data results you can use '-f' option which will give |
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60 | # total number of minutes the system has been up. |
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61 | # |
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62 | # 3. A special case is use of performance to feed data from previous run |
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63 | # back into the plugin. This is used to cache results about what type |
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64 | # of system it is (you can also directly specify this with -T option) |
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65 | # and also means -w and -c threshold values are ignored and instead |
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66 | # plugin will issue ONE alert (warning or critical) if system uptime |
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67 | # changes from highier value to lower |
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68 | # |
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69 | # ============================ EXAMPLES ======================================= |
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70 | # |
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71 | # 1. Local server (use with NRPE or on nagios host), warning on < 5 minutes: |
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72 | # |
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73 | # define command { |
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74 | # command_name check_uptime |
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75 | # command_line $USER1$/check_uptime.pl -f -w 5 |
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76 | # } |
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77 | # |
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78 | # 2. Local server (use with NRPE or on nagios host), |
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79 | # one critical alert on reboot: |
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80 | # |
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81 | # define command { |
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82 | # command_name check_uptime |
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83 | # command_line $USER1$/check_uptime.pl -f -c -P "SERVICEPERFDATA$" |
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84 | # } |
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85 | # |
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86 | # 3. Remote server SNMP v2, one warning alert on reboot, |
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87 | # autodetect and cache type of server: |
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88 | # |
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89 | # define command { |
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90 | # command_name check_snmp_uptime_v2 |
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91 | # command_line $USER1$/check_uptime.pl -2 -f -w -H $HOSTADDRESS$ -C $_HOSTSNMP_COMMUNITY$ -P "$SERVICEPERFDATA$" |
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92 | # } |
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93 | # |
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94 | # 4. Remote server SNMP v3, rest as above |
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95 | # |
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96 | #define command { |
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97 | # command_name check_snmp_uptime_v3 |
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98 | # command_line $USER1$/check_uptime.pl -f -w -H $HOSTADDRESS$ -l $_HOSTSNMP_V3_USER$ -x $_HOSTSNMP_V3_AUTH$ -X $_HOSTSNMP_V3_PRIV$ -L sha,aes -P "$SERVICEPERFDATA$" |
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99 | # } |
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100 | # |
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101 | # 5. Example of service definition using above |
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102 | # |
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103 | # define service{ |
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104 | # use std-service |
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105 | # hostgroup_name all_snmp_hosts |
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106 | # service_description SNMP Uptime |
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107 | # max_check_attempts 1 |
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108 | # check_command check_snmp_uptime |
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109 | # } |
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110 | # |
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111 | # 6. And this is optional dependency definition for above which makes |
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112 | # every SNMP service (service beloning to SNMP servicegroup) on |
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113 | # same host dependent on this SNMP Uptime check. Then if SNMP |
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114 | # daemon goes down you only receive one alert |
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115 | # |
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116 | # define servicedependency{ |
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117 | # service_description SNMP Uptime |
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118 | # dependent_servicegroup_name snmp |
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119 | # } |
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120 | # |
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121 | # ============================= VERSION HISTORY ============================== |
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122 | # |
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123 | # 0.1 - sometime 2006 : Simple script for tracking local system uptime |
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124 | # 0.2 - sometime 2008 : Update to get uptime by SNMP, its now alike my other plugins |
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125 | # 0.3 - Nov 14, 2009 : Added getting system info line and using that to decide |
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126 | # format of uptime line and how to process it. Added support |
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127 | # for getting uptime with SNMP from windows systems. |
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128 | # Added documentation header alike my other plugins. |
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129 | # Planned to release it to public, but forgot. |
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130 | # 0.4 - Dec 19, 2011 : Update to support SNMP v3, released to public |
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131 | # 0.41 - Jan 13, 2012 : Added bug fix by Rom_UA posted as comment on Nagios Exchange |
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132 | # Added version history you're reading right now. |
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133 | # 0.42 - Feb 13, 2012 : Bug fix to not report WARNING if uptime is not correct output |
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134 | # 0.5 - Feb 29, 2012 : Added support for "netswitch" engine type that retrieves |
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135 | # snmpEngineTime. Added proper support for sysUpTime interpreting |
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136 | # it as 1/100s of a second and converting to days,hours,minutes |
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137 | # Changed internal processing structure, now reported uptime |
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138 | # info text is based on uptime_minutes and not separate. |
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139 | # 0.51 - Jun 05, 2012 : Bug fixed for case when when snmp system info is < 3 words. |
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140 | # 0.52 - Jun 19, 2012 : For switches if snmpEngineTime OID is not available, |
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141 | # the plugin will revert back to checking hostUptime and |
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142 | # then sysUptime. Entire logic has in fact been changed |
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143 | # to support trying more than just two OIDs. Also added |
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144 | # support to specify filename to '-v' option for debug |
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145 | # output to go to instead of console and for '--debug' |
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146 | # option as an alias to '--verbose'. |
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147 | # 0.521 - Oct 4, 2012 : Small bug in one of regex, see issue #11 on github |
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148 | # |
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149 | # TODO: |
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150 | # 0) Add '--extra-opts' to allow to read options from a file as specified |
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151 | # at http://nagiosplugins.org/extra-opts. This is TODO for all my plugins |
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152 | # 1) Add support for ">", "<" and other threshold qualifiers |
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153 | # as done in check_snmp_temperature.pl or check_mysqld.pl |
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154 | # 2) Support for more types, in particular network equipment such as cisco: [DONE] |
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155 | # sysUpTime is a 32-bit counter in 1/100 of a second, it rolls over after 496 days |
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156 | # snmpEngineTime (.1.3.6.1.6.3.10.2.1.3) returns the uptime in seconds and will not |
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157 | # roll over, however some cisco switches (29xx) are buggy and it gets reset too. |
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158 | # Routers running 12.0(3)T or higher can use the snmpEngineTime object from |
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159 | # the SNMP-FRAMEWORK-MIB. This keeps track of seconds since SNMP engine started. |
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160 | # 3) Add threshold into perfout as ';warn;crit' |
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161 | # |
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162 | # ========================== START OF PROGRAM CODE =========================== |
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163 | |
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164 | use strict; |
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165 | use Getopt::Long; |
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166 | |
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167 | # Nagios specific |
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168 | our $TIMEOUT; |
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169 | our %ERRORS; |
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170 | eval 'use utils qw(%ERRORS $TIMEOUT)'; |
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171 | if ($@) { |
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172 | $TIMEOUT = 10; |
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173 | %ERRORS = ('OK'=>0,'WARNING'=>1,'CRITICAL'=>2,'UNKNOWN'=>3,'DEPENDENT'=>4); |
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174 | } |
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175 | |
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176 | our $no_snmp=0; |
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177 | eval 'use Net::SNMP'; |
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178 | if ($@) { |
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179 | $no_snmp=1; |
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180 | } |
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181 | |
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182 | # Version |
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183 | my $Version='0.52'; |
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184 | |
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185 | # SNMP OID |
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186 | my $oid_sysSystem = '1.3.6.1.2.1.1.1.0'; # windows and some unix |
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187 | my $oid_hostUptime = '1.3.6.1.2.1.25.1.1.0'; # hostUptime, usually unix systems |
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188 | my $oid_sysUptime = '1.3.6.1.2.1.1.3.0'; # sysUpTime, windows |
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189 | my $oid_engineTime = '1.3.6.1.6.3.10.2.1.3'; # SNMP-FRAMEWORK-MIB |
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190 | |
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191 | my @oid_uptime_types = ( ['', '', ''], # type 0 is reserved |
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192 | [ 'local', '', ''], # type 1 is local |
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193 | [ 'win', 'sysUpTime', $oid_sysUptime ], # type 2 is windows |
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194 | [ 'unix-host', 'hostUpTime', $oid_hostUptime ], # type 3 is unix-host |
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195 | [ 'unix-sys', 'sysUpTime', $oid_sysUptime ], # type 4 is unix-sys |
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196 | [ 'net', 'engineTime', $oid_engineTime ]); # type 5 is netswitch |
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197 | |
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198 | # Not used, but perhaps later |
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199 | my $oid_hrLoad = '1.3.6.1.2.1.25.3.3.1.2.1'; |
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200 | my $oid_sysLoadInt1 = '1.3.6.1.4.1.2021.10.1.5.1'; |
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201 | my $oid_sysLoadInt5 = '1.3.6.1.4.1.2021.10.1.5.2'; |
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202 | my $oid_sysLoadInt15 = '1.3.6.1.4.1.2021.10.1.5.3'; |
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203 | |
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204 | # Standard options |
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205 | my $o_host = undef; # hostname |
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206 | my $o_timeout= undef; # Timeout (Default 10) |
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207 | my $o_help= undef; # wan't some help ? |
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208 | my $o_verb= undef; # verbose mode |
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209 | my $o_version= undef; # print version |
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210 | my $o_label= undef; # change label instead of printing uptime |
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211 | my $o_perf= undef; # Output performance data (uptime in minutes) |
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212 | my $o_prevperf= undef; # performance data given with $SERVICEPERFDATA$ macro |
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213 | my $o_warn= undef; # WARNING alert if system has been up for < specified number of minutes |
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214 | my $o_crit= undef; # CRITICAL alert if system has been up for < specified number of minutes |
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215 | my $o_type= undef; # type of check (local, auto, unix, win) |
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216 | |
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217 | # Login and other options specific to SNMP |
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218 | my $o_port = 161; # SNMP port |
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219 | my $o_community = undef; # community |
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220 | my $o_version2 = undef; # use snmp v2c |
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221 | my $o_login= undef; # Login for snmpv3 |
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222 | my $o_passwd= undef; # Pass for snmpv3 |
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223 | my $v3protocols= undef; # V3 protocol list. |
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224 | my $o_authproto= 'md5'; # Auth protocol |
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225 | my $o_privproto= 'des'; # Priv protocol |
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226 | my $o_privpass= undef; # priv password |
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227 | |
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228 | ## Additional global variables |
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229 | my %prev_perf= (); # array that is populated with previous performance data |
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230 | my $check_type = 0; |
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231 | |
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232 | sub p_version { print "check_uptime version : $Version\n"; } |
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233 | |
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234 | sub print_usage { |
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235 | print "Usage: $0 [-v [debugfilename]] [-T local|unix-host|unix-sys|win|net] [-H <host> (-C <snmp_community>) [-2] | (-l login -x passwd [-X pass -L <authp>,<privp>) [-p <port>]] [-w <warn minutes> -s <crit minutes>] [-f] [-P <previous perf data from nagios \$SERVICEPERFDATA\$>] [-t <timeout>] | [-V] [--label <string>]\n"; |
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236 | } |
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237 | |
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238 | sub isnnum { # Return true if arg is not a number |
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239 | my $num = shift; |
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240 | if ( $num =~ /^(\d+\.?\d*)|(^\.\d+)$/ ) { return 0 ;} |
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241 | return 1; |
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242 | } |
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243 | |
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244 | sub div_mod { return int( $_[0]/$_[1]) , ($_[0] % $_[1]); } |
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245 | |
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246 | sub help { |
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247 | print "\nUptime Plugin for Nagios (check_uptime) v. ",$Version,"\n"; |
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248 | print "GPL licence, (c) 2008-2012 William Leibzon\n\n"; |
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249 | print_usage(); |
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250 | print <<EOT; |
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251 | |
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252 | Debug & Console Options: |
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253 | -v, --verbose[=FILENAME], --debug[=FILENAME] |
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254 | print extra debugging information. |
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255 | if filename is specified instead of STDOUT the debug data is written to that file |
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256 | -h, --help |
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257 | print this help message |
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258 | -V, --version |
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259 | prints version number |
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260 | |
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261 | Standard Options: |
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262 | -T, --type=auto|local|unix-host|unis-sys|windows|netswitch |
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263 | Type of system: |
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264 | local : localhost (executes 'uptime' command), default if no -C or -l |
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265 | unix-host : SNMP check from hostUptime ($oid_hostUptime) OID |
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266 | unix-sys : SNMP check from sysUptime ($oid_sysUptime) OID |
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267 | win | windows : SNMP check from sysUptime ($oid_sysUptime) OID |
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268 | net | netswitch : SNMP check from snmpEngineTime ($oid_engineTime) OID |
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269 | auto : Autodetect what system by checking sysSystem OID first, default |
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270 | -w, --warning[=minutes] |
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271 | Report nagios WARNING alert if system has been up for less then specified |
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272 | number of minutes. If no minutes are specified but previous preformance |
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273 | data is fed back with -P option then alert is sent ONLY ONCE when |
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274 | uptime changes from greater value to smaller |
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275 | -c, --critical[=minutes] |
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276 | Report nagios CRITICAL alert if system has been up for less then |
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277 | specified number of minutes or ONE ALERT if -P option is used and |
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278 | system's previous uptime is larger then current on |
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279 | -f, --perfparse |
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280 | Perfparse compatible output |
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281 | -P, --prev_perfdata |
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282 | Previous performance data (normally put '-P \$SERVICEPERFDATA\$' in |
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283 | nagios command definition). This is recommended if you dont specify |
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284 | type of system with -T so that previously checked type of system info |
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285 | is reused. This is also used to decide on warning/critical condition |
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286 | if number of seconds is not specified with -w or -c. |
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287 | --label=[string] |
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288 | Optional custom label before results prefixed to results |
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289 | -t, --timeout=INTEGER |
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290 | timeout for SNMP in seconds (Default: 15) |
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291 | |
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292 | SNMP Access Options: |
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293 | -H, --hostname=HOST |
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294 | name or IP address of host to check (if not localhost) |
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295 | -C, --community=COMMUNITY NAME |
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296 | community name for the SNMP agent (used with v1 or v2c protocols) |
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297 | -2, --v2c |
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298 | use snmp v2c (can not be used with -l, -x) |
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299 | -l, --login=LOGIN ; -x, --passwd=PASSWD |
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300 | Login and auth password for snmpv3 authentication |
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301 | If no priv password exists, implies AuthNoPriv |
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302 | -X, --privpass=PASSWD |
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303 | Priv password for snmpv3 (AuthPriv protocol) |
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304 | -L, --protocols=<authproto>,<privproto> |
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305 | <authproto> : Authentication protocol (md5|sha : default md5) |
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306 | <privproto> : Priv protocols (des|aes : default des) |
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307 | -p, --port=PORT |
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308 | SNMP port (Default 161) |
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309 | EOT |
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310 | } |
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311 | |
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312 | # For verbose output (updated 06/06/12 to write to debug file if specified) |
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313 | sub verb { |
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314 | my $t=shift; |
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315 | if (defined($o_verb)) { |
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316 | if ($o_verb eq "") { |
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317 | print $t,"\n"; |
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318 | } |
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319 | else { |
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320 | if (!open(DEBUGFILE, ">>$o_verb")) { |
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321 | print $t, "\n"; |
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322 | } |
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323 | else { |
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324 | print DEBUGFILE $t,"\n"; |
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325 | close DEBUGFILE; |
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326 | } |
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327 | } |
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328 | } |
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329 | } |
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330 | |
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331 | # load previous performance data |
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332 | sub process_perf { |
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333 | my %pdh; |
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334 | my ($nm,$dt); |
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335 | foreach (split(' ',$_[0])) { |
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336 | if (/(.*)=(.*)/) { |
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337 | ($nm,$dt)=($1,$2); |
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338 | verb("prev_perf: $nm = $dt"); |
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339 | # in some of my plugins time_ is to profile how long execution takes for some part of plugin |
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340 | # $pdh{$nm}=$dt if $nm !~ /^time_/; |
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341 | $pdh{$nm}=$dt; |
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342 | } |
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343 | } |
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344 | return %pdh; |
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345 | } |
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346 | |
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347 | sub type_from_name { |
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348 | my $type=shift; |
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349 | for(my $i=1; $i<scalar(@oid_uptime_types); $i++) { |
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350 | if ($oid_uptime_types[$i][0] eq $type) { |
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351 | return $i; |
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352 | } |
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353 | } |
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354 | return -1; |
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355 | } |
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356 | |
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357 | |
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358 | sub check_options { |
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359 | Getopt::Long::Configure ("bundling"); |
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360 | GetOptions( |
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361 | 'v:s' => \$o_verb, 'verbose:s' => \$o_verb, "debug:s" => \$o_verb, |
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362 | 'h' => \$o_help, 'help' => \$o_help, |
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363 | 'H:s' => \$o_host, 'hostname:s' => \$o_host, |
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364 | 'p:i' => \$o_port, 'port:i' => \$o_port, |
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365 | 'C:s' => \$o_community, 'community:s' => \$o_community, |
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366 | '2' => \$o_version2, 'v2c' => \$o_version2, |
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367 | 'l:s' => \$o_login, 'login:s' => \$o_login, |
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368 | 'x:s' => \$o_passwd, 'passwd:s' => \$o_passwd, |
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369 | 'X:s' => \$o_privpass, 'privpass:s' => \$o_privpass, |
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370 | 'L:s' => \$v3protocols, 'protocols:s' => \$v3protocols, |
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371 | 't:i' => \$o_timeout, 'timeout:i' => \$o_timeout, |
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372 | 'V' => \$o_version, 'version' => \$o_version, |
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373 | 'f' => \$o_perf, 'perfparse' => \$o_perf, |
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374 | 'w:i' => \$o_warn, 'warning:i' => \$o_warn, |
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375 | 'c:i' => \$o_crit, 'critical:i' => \$o_crit, |
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376 | 'label:s' => \$o_label, |
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377 | 'P:s' => \$o_prevperf, 'prev_perfdata:s' => \$o_prevperf, |
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378 | 'T:s' => \$o_type, 'type:s' => \$o_type, |
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379 | ); |
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380 | if (defined ($o_help) ) { help(); exit $ERRORS{"UNKNOWN"}}; |
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381 | if (defined($o_version)) { p_version(); exit $ERRORS{"UNKNOWN"}}; |
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382 | |
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383 | $o_type = "win" if defined($o_type) && $o_type eq 'windows'; |
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384 | $o_type = "net" if defined($o_type) && $o_type eq 'netswitch'; |
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385 | if (defined($o_type) && $o_type ne 'auto' && type_from_name($o_type)==-1) { |
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386 | print "Invalid system type specified\n"; print_usage(); exit $ERRORS{"UNNKNOWN"}; |
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387 | } |
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388 | |
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389 | if (!defined($o_community) && (!defined($o_login) || !defined($o_passwd)) ) { |
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390 | $o_type='local' if !defined($o_type) || $o_type eq 'auto'; |
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391 | if ($o_type ne 'local') { |
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392 | print "Put snmp login info!\n"; print_usage(); exit $ERRORS{"UNKNOWN"} |
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393 | } |
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394 | if (defined($o_host)) { |
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395 | print "Why are you specifying hostname without SNMP parameters?\n"; print_usage(); exit $ERRORS{"UNKNOWN"}; |
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396 | } |
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397 | } |
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398 | else { |
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399 | $o_type='auto' if !defined($o_type); |
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400 | if ($o_type eq 'local' ) { |
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401 | print "Why are you specifying SNMP login for local system???\n"; print_usage(); exit $ERRORS{"UNKNOWN"} |
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402 | } |
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403 | if (!defined($o_host)) { |
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404 | print "Hostname required for SNMP check.\n"; print_usage(); exit $ERRORS{"UNKNOWN"}; |
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405 | } |
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406 | if ($no_snmp) { |
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407 | print "Can't locate Net/SNMP.pm\n"; print_usage(); exit $ERRORS{"UNKNOWN"}; |
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408 | } |
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409 | } |
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410 | |
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411 | # check snmp information |
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412 | if ((defined($o_login) || defined($o_passwd)) && (defined($o_community) || defined($o_version2)) ) |
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413 | { print "Can't mix snmp v1,2c,3 protocols!\n"; print_usage(); exit $ERRORS{"UNKNOWN"}} |
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414 | if (defined ($v3protocols)) { |
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415 | if (!defined($o_login)) { print "Put snmp V3 login info with protocols!\n"; print_usage(); exit $ERRORS{"UNKNOWN"}} |
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416 | my @v3proto=split(/,/,$v3protocols); |
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417 | if ((defined ($v3proto[0])) && ($v3proto[0] ne "")) {$o_authproto=$v3proto[0]; } # Auth protocol |
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418 | if (defined ($v3proto[1])) {$o_privproto=$v3proto[1]; } # Priv protocol |
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419 | if ((defined ($v3proto[1])) && (!defined($o_privpass))) |
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420 | { print "Put snmp V3 priv login info with priv protocols!\n"; print_usage(); exit $ERRORS{"UNKNOWN"}} |
---|
421 | } |
---|
422 | |
---|
423 | if (defined($o_timeout) && (isnnum($o_timeout) || ($o_timeout < 2) || ($o_timeout > 60))) |
---|
424 | { print "Timeout must be >1 and <60 !\n"; print_usage(); exit $ERRORS{"UNKNOWN"}} |
---|
425 | if (!defined($o_timeout)) {$o_timeout=$TIMEOUT+5;} |
---|
426 | |
---|
427 | if (defined($o_prevperf)) { |
---|
428 | if (defined($o_perf)) { |
---|
429 | %prev_perf=process_perf($o_prevperf); |
---|
430 | $check_type = $prev_perf{type} if $o_type eq 'auto' && exists($prev_perf{tye}) && exists($oid_uptime_types[$prev_perf{type}][0]); |
---|
431 | } |
---|
432 | else { |
---|
433 | print "need -f option first \n"; print_usage(); exit $ERRORS{"UNKNOWN"}; |
---|
434 | } |
---|
435 | } |
---|
436 | |
---|
437 | if ($o_type eq 'auto') { |
---|
438 | $check_type=0; |
---|
439 | } |
---|
440 | else { |
---|
441 | $check_type = type_from_name($o_type); |
---|
442 | } |
---|
443 | } |
---|
444 | |
---|
445 | sub create_snmp_session { |
---|
446 | my ($session,$error); |
---|
447 | |
---|
448 | if ( defined($o_login) && defined($o_passwd)) { |
---|
449 | # SNMPv3 login |
---|
450 | if (!defined ($o_privpass)) { |
---|
451 | verb("SNMPv3 AuthNoPriv login : $o_login, $o_authproto"); |
---|
452 | ($session, $error) = Net::SNMP->session( |
---|
453 | -hostname => $o_host, |
---|
454 | -version => '3', |
---|
455 | -port => $o_port, |
---|
456 | -username => $o_login, |
---|
457 | -authpassword => $o_passwd, |
---|
458 | -authprotocol => $o_authproto, |
---|
459 | -timeout => $o_timeout |
---|
460 | ); |
---|
461 | } else { |
---|
462 | verb("SNMPv3 AuthPriv login : $o_login, $o_authproto, $o_privproto"); |
---|
463 | ($session, $error) = Net::SNMP->session( |
---|
464 | -hostname => $o_host, |
---|
465 | -version => '3', |
---|
466 | -username => $o_login, |
---|
467 | -port => $o_port, |
---|
468 | -authpassword => $o_passwd, |
---|
469 | -authprotocol => $o_authproto, |
---|
470 | -privpassword => $o_privpass, |
---|
471 | -privprotocol => $o_privproto, |
---|
472 | -timeout => $o_timeout |
---|
473 | ); |
---|
474 | } |
---|
475 | } else { |
---|
476 | if (defined ($o_version2)) { |
---|
477 | # SNMPv2c Login |
---|
478 | verb("SNMP v2c login"); |
---|
479 | ($session, $error) = Net::SNMP->session( |
---|
480 | -hostname => $o_host, |
---|
481 | -version => 2, |
---|
482 | -community => $o_community, |
---|
483 | -port => $o_port, |
---|
484 | -timeout => $o_timeout |
---|
485 | ); |
---|
486 | } else { |
---|
487 | # SNMPV1 login |
---|
488 | verb("SNMP v1 login"); |
---|
489 | ($session, $error) = Net::SNMP->session( |
---|
490 | -hostname => $o_host, |
---|
491 | -community => $o_community, |
---|
492 | -port => $o_port, |
---|
493 | -timeout => $o_timeout |
---|
494 | ); |
---|
495 | } |
---|
496 | } |
---|
497 | if (!defined($session)) { |
---|
498 | printf("ERROR opening session: %s.\n", $error); |
---|
499 | exit $ERRORS{"UNKNOWN"}; |
---|
500 | } |
---|
501 | |
---|
502 | return $session; |
---|
503 | } |
---|
504 | |
---|
505 | $SIG{'ALRM'} = sub { |
---|
506 | print "Alarm timeout\n"; |
---|
507 | exit $ERRORS{"UNKNOWN"}; |
---|
508 | }; |
---|
509 | |
---|
510 | ########## MAIN ####### |
---|
511 | my $system_info=""; |
---|
512 | my $uptime_info=undef; |
---|
513 | my $uptime_minutes=undef; |
---|
514 | my $perf_out=""; |
---|
515 | my $status=0; |
---|
516 | my $uptime_output; |
---|
517 | my ($days, $hrs, $mins); |
---|
518 | |
---|
519 | check_options(); |
---|
520 | |
---|
521 | # Check gobal timeout if snmp screws up |
---|
522 | if (defined($o_timeout)) { |
---|
523 | verb("Alarm at $o_timeout + 5"); |
---|
524 | alarm($o_timeout+5); |
---|
525 | } |
---|
526 | |
---|
527 | if ($check_type==1) { # local |
---|
528 | # Process unix uptime command output |
---|
529 | $uptime_output=`uptime`; |
---|
530 | verb("Local Uptime Result is: $uptime_output"); |
---|
531 | if ($uptime_output =~ /(\d+)\s+days?,\s+(\d+)\:(\d+)/) { |
---|
532 | ($days, $hrs, $mins) = ($1, $2, $3); |
---|
533 | } |
---|
534 | elsif ($uptime_output =~ /up\s+(\d+)\shours?\s+(\d+)/) { |
---|
535 | ($days, $hrs, $mins) = (0, $1, $2); |
---|
536 | } |
---|
537 | elsif ($uptime_output =~ /up\s+(\d+)\:(\d+)/) { |
---|
538 | ($days, $hrs, $mins) = (0, $1, $2); |
---|
539 | } |
---|
540 | elsif ($uptime_output =~ /up\s+(\d+)\s+min/) { |
---|
541 | ($days, $hrs, $mins) = (0,0,$1); |
---|
542 | } |
---|
543 | elsif ($uptime_output =~ /up\s+(\d+)s+days?,s+(\d+)s+min/) { |
---|
544 | ($days, $hrs, $mins) = ($1,0,$2); |
---|
545 | } |
---|
546 | else { |
---|
547 | $uptime_info = "up ".$uptime_output; |
---|
548 | } |
---|
549 | if (defined($days) && defined($hrs) && defined($mins)) { |
---|
550 | $uptime_minutes = $days*24*60+$hrs*60+$mins; |
---|
551 | } |
---|
552 | my @temp=split(' ',`uname -a`); |
---|
553 | if (scalar(@temp)<3) { |
---|
554 | $system_info=`uname -a`; |
---|
555 | } |
---|
556 | else { |
---|
557 | $system_info=join(' ',$temp[0],$temp[1],$temp[2]); |
---|
558 | } |
---|
559 | } |
---|
560 | else { |
---|
561 | # SNMP connection |
---|
562 | my $session=create_snmp_session(); |
---|
563 | my $result=undef; |
---|
564 | my $oid=""; |
---|
565 | my $guessed_check_type=0; |
---|
566 | |
---|
567 | if ($check_type==0){ |
---|
568 | $result = $session->get_request(-varbindlist=>[$oid_sysSystem]); |
---|
569 | if (!defined($result)) { |
---|
570 | printf("ERROR: Can not retrieve $oid_sysSystem table: %s.\n", $session->error); |
---|
571 | $session->close; |
---|
572 | exit $ERRORS{"UNKNOWN"}; |
---|
573 | } |
---|
574 | verb("$o_host SysInfo Result from OID $oid_sysSystem: $result->{$oid_sysSystem}"); |
---|
575 | if ($result->{$oid_sysSystem} =~ /Windows/) { |
---|
576 | $guessed_check_type=2; |
---|
577 | verb('Guessing Type: 2 = windows'); |
---|
578 | } |
---|
579 | if ($result->{$oid_sysSystem} =~ /Cisco/) { |
---|
580 | $guessed_check_type=5; |
---|
581 | verb('Guessing Type: 5 = netswitch'); |
---|
582 | } |
---|
583 | if ($guessed_check_type==0) { |
---|
584 | $guessed_check_type=3; # will try hostUptime first |
---|
585 | } |
---|
586 | $oid=$oid_uptime_types[$guessed_check_type][2]; |
---|
587 | } |
---|
588 | else { |
---|
589 | $oid=$oid_uptime_types[$check_type][2]; |
---|
590 | } |
---|
591 | |
---|
592 | do { |
---|
593 | $result = $session->get_request(-varbindlist=>[$oid,$oid_sysSystem]); |
---|
594 | if (!defined($result)) { |
---|
595 | if ($check_type!=0) { |
---|
596 | printf("ERROR: Can not retrieve uptime OID table $oid: %s.\n", $session->error); |
---|
597 | $session->close; |
---|
598 | exit $ERRORS{"UNKNOWN"}; |
---|
599 | } |
---|
600 | else { |
---|
601 | if ($session->error =~ /noSuchName/) { |
---|
602 | if ($guessed_check_type==4) { |
---|
603 | verb("Received noSuchName error for sysUpTime OID $oid. Giving up."); |
---|
604 | $guessed_check_type=0; |
---|
605 | } |
---|
606 | if ($guessed_check_type==3) { |
---|
607 | verb("Received noSuchName error for hostUpTime OID $oid, will now try sysUpTime"); |
---|
608 | $guessed_check_type=4; |
---|
609 | } |
---|
610 | else { |
---|
611 | verb("Received noSuchName error for OID $oid, will now try hostUpTime"); |
---|
612 | $guessed_check_type=3; |
---|
613 | } |
---|
614 | if ($guessed_check_type!=0) { |
---|
615 | $oid=$oid_uptime_types[$guessed_check_type][2]; |
---|
616 | } |
---|
617 | } |
---|
618 | else { |
---|
619 | printf("ERROR: Can not retrieve uptime OID table $oid: %s.\n", $session->error); |
---|
620 | $session->close; |
---|
621 | exit $ERRORS{"UNKNOWN"}; |
---|
622 | } |
---|
623 | } |
---|
624 | } |
---|
625 | else { |
---|
626 | if ($check_type==0) { |
---|
627 | $check_type=$guessed_check_type; |
---|
628 | } |
---|
629 | } |
---|
630 | } |
---|
631 | while (!defined($result) && $guessed_check_type!=0); |
---|
632 | |
---|
633 | $session->close; |
---|
634 | if ($check_type==0 && $guessed_check_type==0) { |
---|
635 | printf("ERROR: Can not autodetermine proper uptime OID table. Giving up.\n"); |
---|
636 | exit $ERRORS{"UNKNOWN"}; |
---|
637 | } |
---|
638 | |
---|
639 | my ($days, $hrs, $mins); |
---|
640 | $uptime_output=$result->{$oid}; |
---|
641 | verb("$o_host Uptime Result from OID $oid: $uptime_output"); |
---|
642 | |
---|
643 | if ($uptime_output =~ /(\d+)\s+days?,\s+(\d+)\:(\d+)/) { |
---|
644 | ($days, $hrs, $mins) = ($1, $2, $3); |
---|
645 | } |
---|
646 | elsif ($uptime_output =~ /(\d+)\s+hours?,\s+(\d+)\:(\d+)/) { |
---|
647 | ($days, $hrs, $mins) = (0, $1, $2); |
---|
648 | } |
---|
649 | elsif ($uptime_output =~ /(\d+)\s+min/) { |
---|
650 | ($days, $hrs, $mins) = (0, 0, $1); |
---|
651 | } |
---|
652 | if (defined($days) && defined($hrs) && defined($mins)) { |
---|
653 | $uptime_minutes = $days*24*60+$hrs*60+$mins; |
---|
654 | } |
---|
655 | elsif ($uptime_output =~ /^(\d+)$/) { |
---|
656 | my $upnum = $1; |
---|
657 | if ($oid eq $oid_sysUptime) { |
---|
658 | $uptime_minutes = $upnum/100/60; |
---|
659 | } |
---|
660 | elsif ($oid eq $oid_engineTime) { |
---|
661 | $uptime_minutes = $upnum/60; |
---|
662 | } |
---|
663 | } |
---|
664 | else { |
---|
665 | $uptime_info = "up ".$uptime_output; |
---|
666 | } |
---|
667 | my @temp=split(' ',$result->{$oid_sysSystem}); |
---|
668 | if (scalar(@temp)<3) { |
---|
669 | $system_info=$result->{$oid_sysSystem}; |
---|
670 | } |
---|
671 | else { |
---|
672 | $system_info=join(' ',$temp[0],$temp[1],$temp[2]); |
---|
673 | } |
---|
674 | } |
---|
675 | |
---|
676 | if (defined($uptime_minutes) && !defined($uptime_info)) { |
---|
677 | ($hrs,$mins) = div_mod($uptime_minutes,60); |
---|
678 | ($days,$hrs) = div_mod($hrs,24); |
---|
679 | $uptime_info = "up "; |
---|
680 | $uptime_info .= "$days days " if $days>0; |
---|
681 | $uptime_info .= "$hrs hours " if $hrs>0; |
---|
682 | $uptime_info .= "$mins minutes"; |
---|
683 | } |
---|
684 | |
---|
685 | verb("System Type: $check_type (".$oid_uptime_types[$check_type][0].")"); |
---|
686 | verb("System Info: $system_info") if $system_info; |
---|
687 | verb("Uptime Text: $uptime_info") if defined($uptime_info); |
---|
688 | verb("Uptime Minutes: $uptime_minutes") if defined($uptime_minutes); |
---|
689 | |
---|
690 | if (!defined($uptime_info)) { |
---|
691 | $uptime_info = "Can not determine uptime"; |
---|
692 | $status = 3; |
---|
693 | } |
---|
694 | |
---|
695 | if (defined($o_perf)) { |
---|
696 | $perf_out = "type=$check_type"; |
---|
697 | $perf_out .= " uptime_minutes=$uptime_minutes" if defined($uptime_minutes); |
---|
698 | } |
---|
699 | |
---|
700 | if (defined($uptime_minutes)) { |
---|
701 | if (defined($o_prevperf)) { |
---|
702 | $status = 1 if defined($o_warn) && exists($prev_perf{uptime_minutes}) && $prev_perf{uptime_minutes} > $uptime_minutes; |
---|
703 | $status = 2 if defined($o_crit) && exists($prev_perf{uptime_minutes}) && $prev_perf{uptime_minutes} > $uptime_minutes; |
---|
704 | } |
---|
705 | else { |
---|
706 | $status = 1 if defined($o_warn) && !isnnum($o_warn) && $o_warn >= $uptime_minutes; |
---|
707 | $status = 2 if defined($o_crit) && !isnnum($o_crit) && $o_crit >= $uptime_minutes; |
---|
708 | } |
---|
709 | } |
---|
710 | alarm(0); |
---|
711 | |
---|
712 | my $exit_status="UNKNOWN"; |
---|
713 | $exit_status="OK" if $status==0; |
---|
714 | $exit_status="WARNING" if $status==1; |
---|
715 | $exit_status="CRITICAL" if $status==2; |
---|
716 | $exit_status="UNKNOWN" if $status==3; |
---|
717 | $exit_status="$o_label $exit_status" if defined($o_label); |
---|
718 | print "$exit_status: $system_info"; |
---|
719 | print " - $uptime_info"; |
---|
720 | print " | ",$perf_out if $perf_out; |
---|
721 | print "\n"; |
---|
722 | exit $status; |
---|