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pkg-monitoring-plugins/plugins-scripts/check_disk_smb.pl

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Perl
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#!@PERL@ -w
#
#
# check_disk.pl <host> <share> <user> <pass> [warn] [critical] [port]
#
# Monitoring host script to get the disk usage from a SMB share
#
# Changes and Modifications
# =========================
# 7-Aug-1999 - Michael Anthon
# Created from check_disk.pl script provided with netsaint_statd (basically
# cause I was too lazy (or is that smart?) to write it from scratch)
# 8-Aug-1999 - Michael Anthon
# Modified [warn] and [critical] parameters to accept format of nnn[M|G] to
# allow setting of limits in MBytes or GBytes. Percentage settings for large
# drives is a pain in the butt
# 2-May-2002 - SGhosh fix for embedded perl
#
#
require 5.004;
use POSIX qw(setsid);
use strict;
use Getopt::Long;
use vars qw($opt_P $opt_V $opt_h $opt_H $opt_s $opt_W $opt_u $opt_p $opt_w $opt_c $opt_a $opt_C $opt_t $verbose);
use vars qw($PROGNAME);
use FindBin;
use lib "$FindBin::Bin";
use utils qw($TIMEOUT %ERRORS &print_revision &support &usage);
# make us session leader which makes all children exit if we do
setsid;
sub print_help ();
sub print_usage ();
$PROGNAME = "check_disk_smb";
$ENV{'PATH'}='@TRUSTED_PATH@';
$ENV{'BASH_ENV'}='';
$ENV{'ENV'}='';
Getopt::Long::Configure('bundling');
GetOptions
("v" => \$verbose, "verbose" => \$verbose,
"t=i" => \$opt_t, "timeout=i" => \$opt_t,
"P=s" => \$opt_P, "port=s" => \$opt_P,
"V" => \$opt_V, "version" => \$opt_V,
"h" => \$opt_h, "help" => \$opt_h,
"w=s" => \$opt_w, "warning=s" => \$opt_w,
"c=s" => \$opt_c, "critical=s" => \$opt_c,
"p=s" => \$opt_p, "password=s" => \$opt_p,
"u=s" => \$opt_u, "username=s" => \$opt_u,
"s=s" => \$opt_s, "share=s" => \$opt_s,
"W=s" => \$opt_W, "workgroup=s" => \$opt_W,
"H=s" => \$opt_H, "hostname=s" => \$opt_H,
"a=s" => \$opt_a, "address=s" => \$opt_a,
"C=s" => \$opt_C, "configfile=s" => \$opt_C);
if ($opt_V) {
print_revision($PROGNAME,'@NP_VERSION@'); #'
exit $ERRORS{'UNKNOWN'};
}
if ($opt_h) {print_help(); exit $ERRORS{'UNKNOWN'};}
my $smbclient = $utils::PATH_TO_SMBCLIENT;
$smbclient || usage("check requires smbclient, smbclient not set\n");
-x $smbclient || usage("check requires smbclient, $smbclient: $!\n");
# Options checking
($opt_H) || ($opt_H = shift @ARGV) || usage("Host name not specified\n");
my $host = $1 if ($opt_H =~ /^([-_.A-Za-z0-9 ]+\$?)$/);
($host) || usage("Invalid host: $opt_H\n");
($opt_s) || ($opt_s = shift @ARGV) || usage("Share volume not specified\n");
my $share = $1 if ($opt_s =~ /^([-_.A-Za-z0-9 ]+\$?)$/);
($share) || usage("Invalid share: $opt_s\n");
defined($opt_u) || ($opt_u = shift @ARGV) || ($opt_u = "guest");
my $user = $1 if ($opt_u =~ /^([-_.A-Za-z0-9\\]*)$/);
defined($user) || usage("Invalid user: $opt_u\n");
defined($opt_p) || ($opt_p = shift @ARGV) || ($opt_p = "");
my $pass = $1 if ($opt_p =~ /(.*)/);
($opt_w) || ($opt_w = shift @ARGV) || ($opt_w = 85);
my $warn = $1 if ($opt_w =~ /^([0-9]{1,2}\%?|100\%?|[0-9]+[kMG])$/);
($warn) || usage("Invalid warning threshold: $opt_w\n");
($opt_c) || ($opt_c = shift @ARGV) || ($opt_c = 95);
my $crit = $1 if ($opt_c =~ /^([0-9]{1,2}\%?|100\%?|[0-9]+[kMG])$/);
($crit) || usage("Invalid critical threshold: $opt_c\n");
($opt_C) || ($opt_C = shift @ARGV) || ($opt_C = "");
my $configfile = $opt_C if ($opt_C);
usage("Unable to read config file $configfile\n") if ($configfile) && (! -r $configfile);
if ($opt_t && $opt_t =~ /^([0-9]+)$/) { $TIMEOUT = $1; }
# Execute the given command line and return anything it writes to STDOUT and/or
# STDERR. (This might be useful for other plugins, too, so it should possibly
# be moved to utils.pm.)
sub output_and_error_of {
local *CMD;
local $/ = undef;
my $pid = open CMD, "-|";
if (defined($pid)) {
if ($pid) {
return <CMD>;
} else {
open STDERR, ">&STDOUT" and exec @_;
exit(1);
}
}
return undef;
}
# split the type from the unit value
#Check $warn and $crit for type (%/M/G) and set up for tests
#P = Percent, K = KBytes
my $warn_type;
my $crit_type;
if ($opt_w =~ /^([0-9]+)\%?$/) {
$warn = "$1";
$warn_type = "P";
} elsif ($opt_w =~ /^([0-9]+)k$/) {
$warn_type = "K";
$warn = $1;
} elsif ($opt_w =~ /^([0-9]+)M$/) {
$warn_type = "K";
$warn = $1 * 1024;
} elsif ($opt_w =~ /^([0-9]+)G$/) {
$warn_type = "K";
$warn = $1 * 1048576;
}
if ($opt_c =~ /^([0-9]+)\%?$/) {
$crit = "$1";
$crit_type = "P";
} elsif ($opt_c =~ /^([0-9]+)k$/) {
$crit_type = "K";
$crit = $1;
} elsif ($opt_c =~ /^([0-9]+)M$/) {
$crit_type = "K";
$crit = $1 * 1024;
} elsif ($opt_c =~ /^([0-9]+)G$/) {
$crit_type = "K";
$crit = $1 * 1048576;
}
# check if both warning and critical are percentage or size
unless( ( $warn_type eq "P" && $crit_type eq "P" ) || ( $warn_type ne "P" && $crit_type ne "P" ) ){
$opt_w =~ s/\%/\%\%/g;
$opt_c =~ s/\%/\%\%/g;
usage("Both warning and critical should be same type- warning: $opt_w critical: $opt_c \n");
}
# verify warning is less than critical
if ( $warn_type eq "K") {
unless ( $warn > $crit) {
usage("Disk size: warning ($opt_w) should be greater than critical ($opt_c) \n");
}
}else{
unless ( $warn < $crit) {
$opt_w =~ s/\%/\%\%/g;
$opt_c =~ s/\%/\%\%/g;
usage("Percentage: warning ($opt_w) should be less than critical ($opt_c) \n");
}
}
my $workgroup = $1 if (defined($opt_W) && $opt_W =~ /(.*)/);
my $address = $1 if (defined($opt_a) && $opt_a =~ /(.*)/);
# end of options checking
my $state = "OK";
my $answer = undef;
my $res = undef;
my $perfdata = "";
my @lines = undef;
# Just in case of problems, let's not hang the monitoring system
$SIG{'ALRM'} = sub {
print "No Answer from Client\n";
$SIG{'INT'} = 'IGNORE';
kill(-2, $$);
exit $ERRORS{"UNKNOWN"};
};
alarm($TIMEOUT);
# Execute a "du" on the share using smbclient program
# get the results into $res
my @cmd = (
$smbclient,
"//$host/$share",
"-U", "$user%$pass",
defined($workgroup) ? ("-W", $workgroup) : (),
defined($address) ? ("-I", $address) : (),
defined($opt_P) ? ("-p", $opt_P) : (),
defined($configfile) ? ("-s", $configfile) : (),
"-c", "du"
);
print join(" ", @cmd) . "\n" if ($verbose);
$res = output_and_error_of(@cmd) or exit $ERRORS{"UNKNOWN"};
#Turn off alarm
alarm(0);
#Split $res into an array of lines
@lines = split /\n/, $res;
#Get the last line into $_
$_ = $lines[$#lines-1];
#print "$_\n";
#Process the last line to get free space.
#If line does not match required regexp, return an UNKNOWN error
if (/\s*(\d*) blocks of size (\d*)\. (\d*) blocks available/) {
my ($avail_bytes) = $3 * $2;
my ($total_bytes) = $1 * $2;
my ($occupied_bytes) = $1 * $2 - $avail_bytes;
my ($avail) = $avail_bytes/1024;
my ($capper);
if ($1!=0) { $capper = int(($3/$1)*100) } else { $capper=100 };
my ($mountpt) = "\\\\$host\\$share";
# TODO : why is the kB the standard unit for args ?
my ($warn_bytes) = $total_bytes - $warn * 1024;
if ($warn_type eq "P") {
$warn_bytes = $warn * $1 * $2 / 100;
}
my ($crit_bytes) = $total_bytes - $crit * 1024;
if ($crit_type eq "P") {
$crit_bytes = $crit * $1 * $2 / 100;
}
if (int($avail / 1024) > 0) {
$avail = int($avail / 1024);
if (int($avail /1024) > 0) {
$avail = (int(($avail / 1024)*100))/100;
$avail = $avail ."G";
} else {
$avail = $avail ."M";
}
} else {
$avail = $avail ."K";
}
#print ":$warn:$warn_type:\n";
#print ":$crit:$crit_type:\n";
#print ":$avail:$avail_bytes:$capper:$mountpt:\n";
$perfdata = "'" . $share . "'=" . $occupied_bytes . 'B;'
. $warn_bytes . ';'
. $crit_bytes . ';'
. '0;'
. $total_bytes;
if ($occupied_bytes > $crit_bytes) {
$state = "CRITICAL";
$answer = "CRITICAL: Only $avail ($capper%) free on $mountpt";
} elsif ( $occupied_bytes > $warn_bytes ) {
$state = "WARNING";
$answer = "WARNING: Only $avail ($capper%) free on $mountpt";
} else {
$answer = "Disk ok - $avail ($capper%) free on $mountpt";
}
} else {
$answer = "Result from smbclient not suitable";
$state = "UNKNOWN";
foreach (@lines) {
if (/(Access denied|NT_STATUS_LOGON_FAILURE|NT_STATUS_ACCESS_DENIED)/) {
$answer = "Access Denied";
$state = "CRITICAL";
last;
}
if (/(Unknown host \w*|Connection.*failed)/) {
$answer = "$1";
$state = "CRITICAL";
last;
}
if (/(You specified an invalid share name|NT_STATUS_BAD_NETWORK_NAME)/) {
$answer = "Invalid share name \\\\$host\\$share";
$state = "CRITICAL";
last;
}
}
}
print $answer;
print " | " . $perfdata if ($perfdata);
print "\n";
print "$state\n" if ($verbose);
exit $ERRORS{$state};
sub print_usage () {
print "Usage: $PROGNAME -H <host> -s <share> -u <user> -p <password>
-w <warn> -c <crit> [-W <workgroup>] [-P <port>] [-a <IP>] [-t timeout]
[-C <configfile>]\n";
}
sub print_help () {
print_revision($PROGNAME,'@NP_VERSION@');
print "Copyright (c) 2000 Michael Anthon/Karl DeBisschop
Perl Check SMB Disk plugin for monitoring
";
print_usage();
print "
-H, --hostname=HOST
NetBIOS name of the server
-s, --share=STRING
Share name to be tested
-W, --workgroup=STRING
Workgroup or Domain used (Defaults to \"WORKGROUP\")
-a, --address=IP
IP-address of HOST (only necessary if HOST is in another network)
-u, --user=STRING
Username to log in to server. (Defaults to \"guest\")
-p, --password=STRING
Password to log in to server. (Defaults to an empty password)
-w, --warning=INTEGER or INTEGER[kMG]
Percent of used space at which a warning will be generated (Default: 85%)
-c, --critical=INTEGER or INTEGER[kMG]
Percent of used space at which a critical will be generated (Defaults: 95%)
-t, --timeout=INTEGER
Seconds before connection times out (Default: 15)
-P, --port=INTEGER
Port to be used to connect to. Some Windows boxes use 139, others 445 (Defaults to smbclient default)
-C, --configfile=STRING
Path to configfile which should be used by smbclient (Defaults to smb.conf of your smb installation)
If thresholds are followed by either a k, M, or G then check to see if that
much disk space is available (kilobytes, Megabytes, Gigabytes)
Warning percentage should be less than critical
Warning (remaining) disk space should be greater than critical.
";
support();
}
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