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#!/usr/bin/env perl
use extreme;
use Getopt::Long;
my %ERRORS = ( 'OK' => 0, 'WARNING' => 1, 'CRITICAL' => 2, 'UNKNOWN' => 3 );
my ( $warn, $crit, $vg, $help );
GetOptions(
"w|warning=i" => \$warn,
"c|critical=i" => \$crit,
"vg=s" => \$vg,
"h|help" => \$help,
);
if ( $help || !$vg || !$warn || !$crit ) {
my $help_text = <<'END';
Usage: %s [ -c 10 -w 20 --vg vg ]
Gen warn|crit nagios report if free space in VG less then params in percent.
-h (--help)
END
printf($help_text );
exit $ERRORS{'UNKNOWN'};
}
# check is vg exists
my $vgs
= `vgs --noheadings --nosuffix --separator " " --rows --options vg_name`;
$vgs =~ s/^\s+//gm;
my @vgs = split /\s+/, $vgs;
chomp @vgs;
if ( not $vg ~~ @vgs ) {
say "VG $vg - Not found";
exit $ERRORS{'UNKNOWN'};
}
my $out
= `vgs --noheadings --nosuffix --units b --separator " " --options vg_size,vg_free $vg`;
$out =~ s/^\s+//gm;
my ( $size, $free ) = split /\s+/, $out;
my $f = sub { return sprintf( '%.f', $_[0] ) };
my $used = $f->( ( ( $size - $free ) / 1073741824 ) );
$size = $f->( $size / 1073741824 );
$free = $f->( $free / 1073741824 );
my $percent = ( $free / $size ) * 100;
my $ERR
= ( $percent < $crit ) ? 'CRITICAL'
: ( $percent < $warn ) ? 'WARNING'
: 'OK';
my $result
= "VG $ERR - free space: $vg "
. $free . 'GB ('
. sprintf( '%.2f', $percent ) . '%)';
$result
.= "| $vg="
. $used . ';'
. $f->( $size * ( $warn / 100 ) ) . ';'
. $f->( $size * ( $crit / 100 ) )
. ";0;$size";
say $result;
exit $ERRORS{$ERR};