NRPE Nagios Plugin To Check The Number Of Files In A Directory

8 Comments

1. I am trying to monitoring Windows Server 2008 Directory from Nagios but getting following error: UNKNOWN: No handler for that command

   any idea ?

    Reply

   • Hello Abdul Waheed,

     Not sure but since this is out of the scope of this article you may try asking the question on QD Engage where you can ask questions. It sounds as if it is simply a Nagios configuration error. If you find a solution without posting on Engage we would love to hear what it is.

     Thanks.
     alex

      Reply

     • Have you installed NSCLIENT64++?..

        Reply

2. is there any plugin which we can use easily to check windows file age and counts.. I found lot more stuff but none of them is easy to configure.. as easy as check_file_count..

   any suggestion would be greatly appreciated.

    Reply

   • Hello Ganesh,

     I do not know of a specific plugin that does this though writing plugins for Nagios is fairly easy. My suggestion would be to expand something like check_file_count to accomodate your needs.

     Thanks.
     alex

      Reply

     • Hi Alex,
       I’ve found one good plugin check_file.pl @ itefix.no/i2/check_winfile it works fine with Fedora 15 but gives NULL with Fedora 16

        Reply

       • Hello Ganesh,

         I would be that the plugin just needs to be tweaked for Fedora 16. Unfortunately I don’t use Fedora or that plugin so its tough to say without spending time looking into it.

         Let us know how you resolve it.

         Thanks.
         alex

          Reply

3. Hi,

   This perl script is another option. It outputs number of files as performance data as well.

   #!/usr/bin/perl
   #
   # check_dir plugin for nagios
   # Checks the number of certain file types in the specified directory.
   #
   # usage:
   # check_dir -d [ -t ] -w -c
   #
   use warnings;
   use strict;
   use Time::Local;

   use lib “/usr/lib/nagios/plugins” ;
   use utils qw($TIMEOUT %ERRORS &print_revision &support);
   use vars qw($PROGNAME);

   my ($verbose,%prognum,$host,$prognum,$state);
   my ($array_ref,$test,$element);
   my ($opt_c,$opt_d,$opt_h,$opt_t,$opt_w);
   my (@FILES,$no,$msg,$perfdata);

   $state = ‘UNKNOWN’;

   $PROGNAME = “check_dir”;
   sub print_help ();
   sub print_usage ();
   sub in ($$);

   $ENV{‘BASH_ENV’}=”;
   $ENV{‘ENV’}=”;
   $ENV{‘PATH’}=”;
   $ENV{‘LC_ALL’}=’C’;

   use Getopt::Long;
   Getopt::Long::Configure(‘bundling’);
   GetOptions(
   “h” => \$opt_h, “help” => \$opt_h,
   “d=s” => \$opt_d, “dir=s” => \$opt_d,
   “t=s” => \$opt_t, “type=s” => \$opt_t,
   “w=i” => \$opt_w, “warning=i” => \$opt_w, # warning if above this number
   “c=i” => \$opt_c, “critical=i” => \$opt_c, # critical if above this number
   “v” => \$verbose, “verbose” => \$verbose
   );

   # -h means display verbose help screen
   if ($opt_h) { print_help(); exit $ERRORS{‘OK’}; }

   ## Supply warning and Critical levels
   unless ( defined $opt_w && defined $opt_c ) {
   print_usage();
   exit $ERRORS{‘UNKNOWN’};
   }

   if ( $opt_w >= $opt_c) {
   print “Warning (-w) must be lower than Critical (-c)!\n”;
   exit $ERRORS{‘UNKNOWN’};
   }

   # -d tells us which directory to check
   $opt_d = shift unless ($opt_d);
   unless ($opt_d) { print_usage(); exit -1; }
   if ( ( -e “$opt_d”) && ( -d “$opt_d” ) ) {
   $prognum = $1;
   } else {
   print “ERROR: $!\n”;
   exit $ERRORS{‘UNKNOWN’};
   }

   get_directory();
   if($perfdata) {
   print (“$msg|$perfdata\n”);
   }else{
   print (“$msg\n”);
   }
   exit $ERRORS{$state};

   ######## Subroutines ==========================

   sub get_directory {
   opendir(my $dh, “$opt_d”) or die “Error opening $opt_d: $!\n”;
   if ( $opt_t ) {
   $opt_t =~ tr/[*();\\\/]//d; # Remove unwanted characters
   print “Files matching pattern: ‘$opt_t’\n” if $verbose;
   @FILES = grep { /$opt_t/ && -f “$opt_d/$_” } readdir($dh); # Specific file type
   $no = @FILES;
   }else{
   @FILES = grep {! /^\./ && -f “$opt_d/$_” } readdir($dh); # Regular files only
   $no = @FILES;
   }
   if ($verbose) {
   foreach (@FILES) {
   print “$_\n”;
   }
   }
   report();
   close $dh;
   }

   sub report() {
   if ($no >= $opt_c) {
   $state = ‘CRITICAL’;
   $msg = “$state: $no files found in directory ($opt_d)”;
   $perfdata = “Files=$no;$opt_w;$opt_c;0”;
   }elsif ($no >= $opt_w) {
   $state = ‘WARNING’;
   $msg = “$state: $no files found in directory ($opt_d)”;
   $perfdata = “Files=$no;$opt_w;$opt_c;0”;
   }else{
   $state = ‘OK’;
   $msg = “$state: $no files found in directory ($opt_d)”;
   $perfdata = “Files=$no;$opt_w;$opt_c;0”;
   }
   }

   sub print_usage () {
   print “Usage: $PROGNAME -d directory -w warning -c critical [-t ] [-v verbose]\n”;
   }

   sub print_help () {
   print_usage();
   print “\n”;
   print ” Checks the number of files in directory\n”;
   print “-h (–help)\n”;
   print “-v (–verbose) = debugging output\n”;
   print “”;
   print “\n\n”;
   support();
   }

   sub in ($$) {
   $array_ref = shift;
   $test = shift;

   while ( $element = shift @{$array_ref} ) {
   if ($test eq $element) {
   return 1;
   }
   }
   return 0;
   }

    Reply