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#!/usr/bin/env perl
use warnings;
use strict;
use Getopt::Std;
use IO::File;
my $plugin_name = "Nagios log check";
my $VERSION = "1.0";
use constant EXIT_OK => 0;
use constant EXIT_WARNING => 1;
use constant EXIT_CRITICAL => 2;
use constant EXIT_UNKNOWN => 3;
my %opts;
getopts('f:t:', \%opts);
if (not (defined $opts{f} ) or not (defined $opts{t} )) {
print "ERROR: invalid usage\n";
HELP_MESSAGE();
exit EXIT_UNKNOWN;
}
unless (-e $opts{f}) {
print "ERROR: $opts{f} not found";
exit EXIT_UNKNOWN;
}
my $status = EXIT_OK;
my $file_mod_time_in_days = -M $opts{f};
my $file_mod_time_in_minutes = sprintf( "%.2f", ($file_mod_time_in_days * 24 * 60) );
if ( $file_mod_time_in_minutes > $opts{t} ) {
print "ERROR: $opts{f} last modified $file_mod_time_in_minutes minutes, threshold set to $opts{t} minutes\n";
exit EXIT_CRITICAL;
}
my $fh = IO::File->new($opts{f}, O_RDONLY)
or die 'Could not open file for reading.';
my $command_running = 1;
while( my $line = <$fh> ) {
if ( $line =~ /Exit code:/ ) {
if ( not $line =~ /Exit code: 0/ ) {
PRINT_EXIT_CODE($line);
exit EXIT_CRITICAL;
}
$command_running = 0;
}
}
close $fh;
if ($command_running == 1) {
print "Command currently running...";
} else {
print "Command completed successfully about $file_mod_time_in_minutes minutes ago.\n";
}
exit $status;
sub PRINT_EXIT_CODE {
my $error_codes = {
};
my $unparsed_exit_code;
$unparsed_exit_code = $_[0];
my @split_exit_code = split(" ", $unparsed_exit_code);
my $exit_code = $split_exit_code[-1];
print "Exit code $exit_code: ";
print $error_codes->{$exit_code} || "UNKNOWN ERROR";
}
sub HELP_MESSAGE
{
print <<EOHELP
Check log output has been modified with t minutes and contains "Exit code: 0".
If "Exit code" is not found, assume command is running.
Check assumes the log is truncated after each command is run.
--help shows this message
--version shows version information
-f path to log file
-t Time in minutes which a log file can be unmodified before raising CRITICAL alert
EOHELP
;
}
sub VERSION_MESSAGE
{
print <<EOVM
$plugin_name v. $VERSION
Copyright 2012, Brian Buchalter - Licensed under GPLv2
EOVM
;
}