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Current File : /usr/lib64/nagios/plugins/base/check_raid3ware
#!/usr/bin/perl

# A simple Nagios plugin to monitor the status of a RAID array on a 3ware RAID
# card, using the 3ware tw_cli utility (downloadable from 3ware's site)
#
# For new versions, check GitHub:
# https://github.com/bigpresh/misc-scripts/tree/master/nagios_3ware_raid_check
#
# David Precious <davidp@preshweb.co.uk>
#
# Released under the WTFPL licence, see http://sam.zoy.org/wtfpl/ for terms.
#
# You'll need to allow the user that the Nagios NRPE daemon runs as to execute
# the tw_cli command as root via sudo.
# e.g., add the following to sudoers :
# nagios  ALL=  NOPASSWD: /usr/local/bin/tw_cli

use strict;
use Nagios::Plugin;
use FileHandle;

my $np = Nagios::Plugin->new(
    shortname => "RAIDCHECK",
    usage => "%s [--verbose][--tw_cli]",
);

$np->add_arg(
    spec => "verbose|v",
    help => "Print debug information",
);
$np->add_arg(
    spec => "tw_cli|tw-cli|t=s",
    help => "Path to 3ware/LSI tw_cli binary",
    default => "tw_cli",
);
$np->getopts;

# We want to remember each critical/warning/OK state, then at the end we can
# exit with the appropriate status.
my (@critical, @warning, @ok);

# First, find out what controller card(s) we have.
my $listfh = FileHandle->new('sudo ' . $np->opts->tw_cli . ' show |')
    or $np->nagios_die("Can't get RAID adapter list via tw_cli command - $!");
my @lines = $listfh->getlines;
my @cards = grep { /^c\d+/ } @lines;
$listfh->close;

if ($np->opts->verbose) {
    print "Result of `" . $np->opts->tw_cli . " show` command:\n";
    print @lines;
}

if (!@cards) {
    $np->nagios_die("Failed to find any RAID controller cards!");
}

for my $cardinfo (@cards) {
    my ($card, $model) = $cardinfo =~ m{^c(\d+) \s+ (\S+) \s+};

    if ($np->opts->verbose) {
        print "Card $card is a $model\n";
        print "Fetching details of card $card - executing `"
            . $np->opts->tw_cli . " info c$card`\n";
    }

    # Determine the arrays present on this card:
    my $statusfh = FileHandle->new(
        'sudo ' . $np->opts->tw_cli . " info c$card |"
    ) or $np->nagios_die("Can't get RAID status via tw_cli command - $!");

    @lines = $statusfh->getlines;
    my @arrays = grep { / RAID-\d+ /x } @lines;
    $statusfh->close;

    if ($np->opts->verbose) {
        print @lines;
        print "Identified " . scalar @arrays . " arrays:\n";
        print @arrays;
    }

    for my $arrayinfo (@arrays) {

        my ($unit, $type, $status, $completion, $completion2, $size) =
            $arrayinfo =~ m{^
                (u\d+) \s+       # Logical unit (array)
                (RAID-\d+) \s+   # RAID type
                (\S+) \s+        # Status
                (\S+) \s+        # Completion percentage or -
                (\S+) \s+        # Completion percentage or -
                \S+ \s+          # Stripe (don't care)
                (\S+)            # Size
            }x
            or $np->nagios_die("Failed to parse output of tw_cli: [$arrayinfo]");

        $size = int $size;

        print "Unit $unit on card$card is a $type array of $size GB"
            . " and is $status\n"
            if $np->opts->verbose;


        my $statusnum;
        if ($status =~ /OK|VERIFYING/) {
            push @ok, "Card $card unit $unit $type $status (${size}GB)";
        } elsif ($status =~ /REBUILDING|INITIALIZING/) {
            # There are two percentage columns, I'm not entirely sure which is used in
            # which situation
            my $complete = $completion eq '-' ? $completion2 : $completion;
            push @warning, "Card $card unit $unit $type $status $complete";
        } else {
            push @critical, "Card $card unit $unit - RAID status $status";
        }
    }
}


# OK, now, exit with the most-critical status(es):
if (@critical) {
    $np->nagios_exit(CRITICAL, join ", ", @critical);
} elsif (@warning) {
    $np->nagios_exit(WARNING, join ", ", @warning);
} else {
    $np->nagios_exit(OK, join ", ", @ok);
}

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