plugins-scripts/check_file_age.pl

   1 #!@PERL@ -w
   2
   3 # check_file_age.pl Copyright (C) 2003 Steven Grimm <koreth-nagios@midwinter.com>
   4 #
   5 # Checks a file's size and modification time to make sure it's not empty
   6 # and that it's sufficiently recent.
   7 #
   8 #
   9 # This program is free software; you can redistribute it and/or
  10 # modify it under the terms of the GNU General Public License
  11 # as published by the Free Software Foundation; either version 2
  12 # of the License, or (at your option) any later version.
  13 #
  14 # This program is distributed in the hope that it will be useful,
  15 # but WITHOUT ANY WARRANTY; without even the implied warranty
  16 # of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17 # GNU General Public License for more details.
  18 #
  19 # you should have received a copy of the GNU General Public License
  20 # along with this program if not, write to the Free Software Foundation,
  21 # 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
  22
  23 use strict;
  24 use English;
  25 use Getopt::Long;
  26 use File::stat;
  27 use vars qw($PROGNAME);
  28 use FindBin;
  29 use lib "$FindBin::Bin";
  30 use utils qw (%ERRORS &print_revision &support);
  31
  32 sub print_help ();
  33 sub print_usage ();
  34
  35 my ($opt_c, $opt_f, $opt_w, $opt_C, $opt_W, $opt_h, $opt_V, $opt_i);
  36 my ($result, $message, $age, $size, $st, $perfdata);
  37
  38 $PROGNAME="check_file_age";
  39
  40 $ENV{'PATH'}='@TRUSTED_PATH@';
  41 $ENV{'BASH_ENV'}='';
  42 $ENV{'ENV'}='';
  43
  44 $opt_w = 240;
  45 $opt_c = 600;
  46 $opt_f = "";
  47
  48 Getopt::Long::Configure('bundling');
  49 GetOptions(
  50         "V"   => \$opt_V, "version"     => \$opt_V,
  51         "h"   => \$opt_h, "help"        => \$opt_h,
  52         "i"   => \$opt_i, "ignore-missing"      => \$opt_i,
  53         "f=s" => \$opt_f, "file"        => \$opt_f,
  54         "w=s" => \$opt_w, "warning-age=s" => \$opt_w,
  55         "W=s" => \$opt_W, "warning-size=s" => \$opt_W,
  56         "c=s" => \$opt_c, "critical-age=s" => \$opt_c,
  57         "C=s" => \$opt_C, "critical-size=s" => \$opt_C);
  58
  59 if ($opt_V) {
  60         print_revision($PROGNAME, '@NP_VERSION@');
  61         exit $ERRORS{'UNKNOWN'};
  62 }
  63
  64 if ($opt_h) {
  65         print_help();
  66         exit $ERRORS{'UNKNOWN'};
  67 }
  68
  69 $opt_f = shift unless ($opt_f);
  70
  71 if (! $opt_f) {
  72         print "FILE_AGE UNKNOWN: No file specified\n";
  73         exit $ERRORS{'UNKNOWN'};
  74 }
  75
  76 # Check that file exists (can be directory or link)
  77 unless (-e $opt_f) {
  78         if ($opt_i) {
  79                 $result = 'OK';
  80                 print "FILE_AGE $result: $opt_f doesn't exist, but ignore-missing was set\n";
  81                 exit $ERRORS{$result};
  82
  83         } else {
  84                 print "FILE_AGE CRITICAL: File not found - $opt_f\n";
  85                 exit $ERRORS{'CRITICAL'};
  86         }
  87 }
  88
  89 $st = File::stat::stat($opt_f);
  90 $age = time - $st->mtime;
  91 $size = $st->size;
  92
  93 $result = 'OK';
  94
  95 if ($opt_c !~ m/^\d+$/ or ($opt_C and $opt_C !~ m/^\d+$/)
  96                 or $opt_w !~ m/^\d+$/ or ($opt_W and $opt_W !~ m/^\d+$/)) {
  97         # range has been specified so use M::P::R to process
  98         require Monitoring::Plugin::Range;
  99         # use permissive range defaults for size when none specified
 100         $opt_W = "0:" unless ($opt_W);
 101         $opt_C = "0:" unless ($opt_C);
 102
 103         if (Monitoring::Plugin::Range->parse_range_string($opt_c)
 104                 ->check_range($age) == 1) { # 1 means it raises an alert because it's OUTSIDE the range
 105                         $result = 'CRITICAL';
 106         }
 107         elsif (Monitoring::Plugin::Range->parse_range_string($opt_C)
 108                 ->check_range($size) == 1) {
 109                         $result = 'CRITICAL';
 110         }
 111         elsif (Monitoring::Plugin::Range->parse_range_string($opt_w)
 112                 ->check_range($age) == 1) {
 113                         $result = 'WARNING';
 114         }
 115         elsif (Monitoring::Plugin::Range->parse_range_string($opt_W)
 116                 ->check_range($size) == 1) {
 117                         $result = 'WARNING';
 118         }
 119 }
 120 else {
 121         # use permissive defaults for size when none specified
 122         $opt_W = 0 unless ($opt_W);
 123         $opt_C = 0 unless ($opt_C);
 124         if ($age > $opt_c or $size < $opt_C) {
 125                 $result = 'CRITICAL';
 126         }
 127         elsif ($age > $opt_w or $size < $opt_W) {
 128                 $result = 'WARNING';
 129         }
 130 }
 131
 132 $perfdata = "age=${age}s;${opt_w};${opt_c} size=${size}B;${opt_W};${opt_C};0";
 133 print "FILE_AGE $result: $opt_f is $age seconds old and $size bytes | $perfdata\n";
 134 exit $ERRORS{$result};
 135
 136 sub print_usage () {
 137         print "Usage:\n";
 138         print "  $PROGNAME [-w <secs>] [-c <secs>] [-W <size>] [-C <size>] [-i] -f <file>\n";
 139         print "  $PROGNAME [-h | --help]\n";
 140         print "  $PROGNAME [-V | --version]\n";
 141 }
 142
 143 sub print_help () {
 144         print_revision($PROGNAME, '@NP_VERSION@');
 145         print "Copyright (c) 2003 Steven Grimm\n\n";
 146         print_usage();
 147         print "\n";
 148         print "  -i | --ignore-missing :  return OK if the file does not exist\n";
 149         print "  <secs>  File must be no more than this many seconds old (default: warn 240 secs, crit 600)\n";
 150         print "  <size>  File must be at least this many bytes long (default: file size is ignored (0 bytes))\n\n";
 151         print "  Both <secs> and <size> can specify a range using the standard plugin syntax\n";
 152         print "  If any of the warning and critical arguments are in range syntax (not just bare numbers)\n";
 153         print "  then all warning and critical arguments will be interpreted as ranges.\n";
 154         print "  To use range processing the perl module Monitoring::Plugin must be installed\n";
 155         print "  For range syntax see https://www.monitoring-plugins.org/doc/guidelines.html#THRESHOLDFORMAT\n";
 156         print "  It is strongly recommended when using range syntax that all four of -w, -W, -c and -C are specified\n";
 157         print "  otherwise it is unlikely that the size test will be doing what is desired\n";
 158         print "\n";
 159         support();
 160 }
 161