Gabriele.vivinetto at 08:38, 14 October 2008

2008-10-14T08:38:37Z

← Older revision		Revision as of 08:38, 14 October 2008
Line 1:		Line 1:
	Creare il file del plugin:		Creare il file del plugin, oppure prelevarlo da:
			<pre>
			scp support.rvmgroup.it:/usr/lib/nagios/plugins/check_md /tmp
			sudo mv /tmp/check_md /usr/lib/nagios/plugins/check_md
			sudo chmod +x /usr/lib/nagios/plugins/check_md
			</pre>

	<source lang=perl>		<source lang=perl>
Line 130:		Line 135:
	command[check-md0]=/usr/lib/nagios/plugins/check_md --device=/dev/md0		command[check-md0]=/usr/lib/nagios/plugins/check_md --device=/dev/md0
	command[check-md1]=/usr/lib/nagios/plugins/check_md --device=/dev/md1		command[check-md1]=/usr/lib/nagios/plugins/check_md --device=/dev/md1

			Riavviare nrpe:
			sudo /etc/init.d/nagios-nrpe-server restart

	==Riferimenti==		==Riferimenti==
	*[http://www.logix.cz/michal/devel/nagios/nagios-linux-swraid.pl Lo script originale]		*[http://www.logix.cz/michal/devel/nagios/nagios-linux-swraid.pl Lo script originale]

Gabriele.vivinetto at 13:24, 10 October 2008

2008-10-10T13:24:01Z

← Older revision		Revision as of 13:24, 10 October 2008
Line 124:		Line 124:

	Il plugin è richimabile con l'opzione --device=/dev/mdx per testare un solo device, o senza, per testare tutti i device.		Il plugin è richimabile con l'opzione --device=/dev/mdx per testare un solo device, o senza, per testare tutti i device.


			sudoedit /etc/nagios/nrpe_local.cfg

			command[check-md0]=/usr/lib/nagios/plugins/check_md --device=/dev/md0
			command[check-md1]=/usr/lib/nagios/plugins/check_md --device=/dev/md1

	==Riferimenti==		==Riferimenti==
	*[http://www.logix.cz/michal/devel/nagios/nagios-linux-swraid.pl Lo script originale]		*[http://www.logix.cz/michal/devel/nagios/nagios-linux-swraid.pl Lo script originale]

Gabriele.vivinetto: New page: Creare il file del plugin: cat <<'EOFile' | sudo tee /usr/lib/nagios/plugins/check_md #!/usr/bin/env perl # Get status of Linux software RAID for SNMP / Nagios # Autho...

2008-10-01T16:03:55Z

New page: Creare il file del plugin: <source lang=perl> cat <<'EOFile' | sudo tee /usr/lib/nagios/plugins/check_md #!/usr/bin/env perl # Get status of Linux software RAID for SNMP / Nagios # Autho...

New page

Creare il file del plugin:

<source lang=perl>
cat <<'EOFile' | sudo tee /usr/lib/nagios/plugins/check_md
#!/usr/bin/env perl

# Get status of Linux software RAID for SNMP / Nagios
# Author: Michal Ludvig <michal@logix.cz>
# http://www.logix.cz/michal/devel/nagios
#
# Simple parser for /proc/mdstat that outputs status of all
# or some RAID devices. Possible results are OK and CRITICAL.
# It could eventually be extended to output WARNING result in
# case the array is being rebuilt or if there are still some
# spares remaining, but for now leave it as it is.
#
# To run the script remotely via SNMP daemon (net-snmp) add the
# following line to /etc/snmpd.conf:
#
# extend raid-md0 /root/parse-mdstat.pl --device=md0
#
# The script result will be available e.g. with command:
#
# snmpwalk -v2c -c public localhost .1.3.6.1.4.1.8072.1.3.2

use strict;
use Getopt::Long;

# Sample /proc/mdstat output:
#
# Personalities : [raid1] [raid5]
# md0 : active (read-only) raid1 sdc1[1]
# 2096384 blocks [2/1] [_U]
#
# md1 : active raid5 sdb3[2] sdb4[3] sdb2[4](F) sdb1[0] sdb5[5](S)
# 995712 blocks level 5, 64k chunk, algorithm 2 [3/2] [U_U]
# [=================>...] recovery = 86.0% (429796/497856) finish=0.0min speed=23877K/sec
#
# unused devices: <none>

my $file = "/proc/mdstat";
my $device = "all";

# Get command line options.
GetOptions ('file=s' => \$file,
'device=s' => \$device,
'help' => sub { &usage() } );

## Strip leading "/dev/" from --device in case it has been given
$device =~ s/^\/dev\///;

## Return codes for Nagios
my %ERRORS=('OK'=>0,'WARNING'=>1,'CRITICAL'=>2,'UNKNOWN'=>3,'DEPENDENT'=>4);

## This is a global return value - set to the worst result we get overall
my $retval = 0;

my (%active_devs, %failed_devs, %spare_devs);

open FILE, "< $file" or die "Can't open $file : $!";
while (<FILE>) {
next if ! /^(md\d+)+\s*:/;
next if $device ne "all" and $device ne $1;
my $dev = $1;

my @array = split(/ /);
for $_ (@array) {
next if ! /(\w+)\[\d+\]($.$)*/;
if ($2 eq "(F)") {
$failed_devs{$dev} .= "$1,";
}
elsif ($2 eq "(S)") {
$spare_devs{$dev} .= "$1,";
}
else {
$active_devs{$dev} .= "$1,";
}
}
if (! defined($active_devs{$dev})) { $active_devs{$dev} = "none"; }
else { $active_devs{$dev} =~ s/,$//; }
if (! defined($spare_devs{$dev})) { $spare_devs{$dev} = "none"; }
else { $spare_devs{$dev} =~ s/,$//; }
if (! defined($failed_devs{$dev})) { $failed_devs{$dev} = "none"; }
else { $failed_devs{$dev} =~ s/,$//; }

$_ = <FILE>;
/\[(\d+)\/(\d+)\]\s+\[(.*)\]$/;
my $devs_total = $1;
my $devs_up = $2;
my $stat = $3;
my $result = "OK";
if ($devs_total > $devs_up or $failed_devs{$dev} ne "none") {
$result = "CRITICAL";
$retval = $ERRORS{"CRITICAL"};
}

print "$result - $dev [$stat] has $devs_up of $devs_total devices active (active=$active_devs{$dev} failed=$failed_devs{$dev} spare=$spare_devs{$dev})\n";
}
close FILE;
exit $retval;

# =====
sub usage()
{
printf("
Check status of Linux SW RAID

Author: Michal Ludvig <michal\@logix.cz> (c) 2006
http://www.logix.cz/michal/devel/nagios

Usage: mdstat-parser.pl [options]

--file=<filename> Name of file to parse. Default is /proc/mdstat
--device=<device> Name of MD device, e.g. md0. Default is \"all\"

");
exit(1);
}
EOFile
</source>

Renderlo eseguibile:
sudo chmod +x /usr/lib/nagios/plugins/check_md

Il plugin è richimabile con l'opzione --device=/dev/mdx per testare un solo device, o senza, per testare tutti i device.

==Riferimenti==
*[http://www.logix.cz/michal/devel/nagios/nagios-linux-swraid.pl Lo script originale]

Monitoraggio RAID Software con Nagios - Revision history

Gabriele.vivinetto at 08:38, 14 October 2008

Gabriele.vivinetto at 13:24, 10 October 2008

Gabriele.vivinetto: New page: Creare il file del plugin: cat <<'EOFile' | sudo tee /usr/lib/nagios/plugins/check_md #!/usr/bin/env perl # Get status of Linux software RAID for SNMP / Nagios # Autho...