Add mdadm RAID script and conf
This commit is contained in:
Daniel Berteaud
commit
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# Description: Software Raid Status
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# Type: Agent or Agent (active)
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# Key: raid.sw.status
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# Type of Information: Character
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# Show Value: As is
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# The value reported is like:
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# OK: md3:raid1:2 drives:931GB:Optimal md2:raid1:2 drives:931GB:Optimal md1:raid1:2 drives:101MB:Optimal
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# You can add a simple trigger on this check like:
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# { hostname:raid.sw.status.str( OK ) }=0
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UserParameter=raid.sw.status,/var/lib/zabbix/bin/check_raid_mdadm
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#!/usr/bin/env perl
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# Get status of Linux software RAID for SNMP / Nagios
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# Author: Michal Ludvig <michal@logix.cz>
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# http://www.logix.cz/michal/devel/nagios
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# Slightly modified by Daniel B. for integration on SME Server / Zabbix
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#
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# Simple parser for /proc/mdstat that outputs status of all
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# or some RAID devices. Possible results are
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# - OK: all arrays are optimal
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# - WARNING: Array rebuilding
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# - CRITICAL: Array degraded
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use strict;
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use Getopt::Long;
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# Sample /proc/mdstat output:
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#
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# Personalities : [raid1] [raid5]
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# md0 : active (read-only) raid1 sdc1[1]
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# 2096384 blocks [2/1] [_U]
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#
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# md1 : active raid5 sdb3[2] sdb4[3] sdb2[4](F) sdb1[0] sdb5[5](S)
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# 995712 blocks level 5, 64k chunk, algorithm 2 [3/2] [U_U]
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# [=================>...] recovery = 86.0% (429796/497856) finish=0.0min speed=23877K/sec
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#
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# unused devices: <none>
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my $file = "/proc/mdstat";
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my $device = "all";
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# Get command line options.
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GetOptions ('file=s' => \$file,
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'device=s' => \$device,
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'help' => sub { &usage() } );
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## Strip leading "/dev/" from --device in case it has been given
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$device =~ s/^\/dev\///;
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## Return codes for Nagios
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my %ERRORS=('OK'=>0,'WARNING'=>1,'CRITICAL'=>2,'UNKNOWN'=>3,'DEPENDENT'=>4);
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## This is a global return value - set to the worst result we get overall
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my $retval = 0;
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my (%active_devs, %failed_devs, %spare_devs, %devs_total, %level, %size, %status);
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my @raids;
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my $result = 'OK';
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open FILE, "< $file" or die "Can't open $file : $!";
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while (<FILE>) {
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next if ! /^(md\d+)+\s*:/;
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next if $device ne "all" and $device ne $1;
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my $dev = $1;
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push @raids, $dev;
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my @array = split(/ /);
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$devs_total{$dev} = 0;
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my $devs_up = 0;
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my $missing = 0;
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for $_ (@array) {
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$level{$dev} = $1 if /^(raid\d+)$/;
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next if ! /(\w+)\[\d+\](\(.\))*/;
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$devs_total{$dev}++;
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if ($2 eq "(F)") {
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$failed_devs{$dev} .= "$1,";
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}
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elsif ($2 eq "(S)") {
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$spare_devs{$dev} .= "$1,";
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}
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else {
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$active_devs{$dev} .= "$1,";
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$devs_up++;
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}
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}
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if (! defined($active_devs{$dev})) { $active_devs{$dev} = "none"; }
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else { $active_devs{$dev} =~ s/,$//; }
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if (! defined($spare_devs{$dev})) { $spare_devs{$dev} = "none"; }
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else { $spare_devs{$dev} =~ s/,$//; }
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if (! defined($failed_devs{$dev})) { $failed_devs{$dev} = "none"; }
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else { $failed_devs{$dev} =~ s/,$//; }
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$_ = <FILE>;
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/(\d+)\ blocks\ (.*)(\[.*\])\s?$/;
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$size{$dev} = int($1/1024);
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#print "$3\n";
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$missing = 1 if ($3 =~ m/_/);
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if ($size{$dev} > 1024){
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$size{$dev} = int($size{$dev}/1024)."GB";
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}
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else{
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$size{$dev} .= "MB";
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}
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$_ = <FILE>;
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if (($devs_total{$dev} > $devs_up) || ($failed_devs{$dev} ne "none") || (($missing) && (!/recovery/))) {
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$status{$dev} = "Degraded";
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$result = "CRITICAL";
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$retval = $ERRORS{"CRITICAL"};
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}
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else {
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$status{$dev} = "Optimal";
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}
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if (/recovery/){
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$status{$dev} = "Rebuilding";
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if ($result eq "OK"){
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$result = "WARNING";
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$retval = $ERRORS{"WARNING"};
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}
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}
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}
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print "$result: ";
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foreach my $raid (@raids){
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print "$raid:$level{$raid}:$devs_total{$raid} drives:$size{$raid}:$status{$raid} ";
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}
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print "\n";
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close FILE;
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exit $retval;
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# =====
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sub usage()
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{
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printf("
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Check status of Linux SW RAID
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Author: Michal Ludvig <michal\@logix.cz> (c) 2006
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http://www.logix.cz/michal/devel/nagios
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Modified by Daniel B. <daniel\@firewall-services.com>:
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Usage: $0 [options]
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--file=<filename> Name of file to parse. Default is /proc/mdstat
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--device=<device> Name of MD device, e.g. md0. Default is \"all\"
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");
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exit(1);
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}
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