Munin contributed plugins

#!/usr/bin/perl -w

# 

# (c) 2007 Nathan Rutman nathan@clusterfs.com

#

# Plugin to monitor RAID status 

#

# Results are % of healthy drives in a raid device

#

#

#%# family=contrib

#%# capabilities=autoconf

if ($ARGV[0] and $ARGV[0] eq "autoconf")

{

    if (-r "/proc/mdstat" and `grep md /proc/mdstat`)

    {

	print "yes\n";

	exit 0;

    }

    else

    {

	print "no RAID devices\n";

	exit 1;

    }

}

if ( $ARGV[0] and $ARGV[0] eq "config" )

{

    print "graph_title RAID status\n";

    print "graph_category disk\n";

    print "graph_info This graph monitors RAID disk health.  Values are percentage of healthy drives in each raid group.  Degraded devices are marked Critical.\n";

    print "graph_args --base 1000 -l 0\n";

    print "graph_vlabel % healthy\n";

    print "graph_scale  no\n";

}

{

    local( $/, *MDSTAT ) ;

    open (MDSTAT, "/proc/mdstat") or exit 1;

    #open (MDSTAT, "/etc/munin/plugins/sample.failed") or exit 1;

    my $text = <MDSTAT>;

    close MDSTAT;

    while ($text =~ /(md\d)\s+:\s+active\s+(\w+)\s+(.*)\n.*\[(\d+)\/(\d+)]\s+\[(\w+)]/ )

    {

	my($dev,$type,$members,$nmem,$nact,$status) = ($1,$2,$3,$4,$5,$6);

	#print "item: $dev $type ($members) status=$status \n";

	if ( $ARGV[0] and $ARGV[0] eq "config" ) 

	{

	    print "$dev.label $dev\n";

	    print "$dev.info $type $members\n";

	    # 100: means less than 100

	    print "$dev.critical 100:\n";	

	} 

	else

	{

	    my $pct = 100 * $nact / $nmem; 

	    print "$dev.value $pct\n";

	}

	$text = $';

    } 

}

exit 0;

# vim:syntax=perl