zabbix-agent-addons/zabbix_scripts/check_zfs

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#!/usr/bin/perl -w
use strict;
use warnings;
use JSON;
use File::Which;
use Getopt::Long;
my $json = {};
my $pool = undef;
my $what = undef;
GetOptions(
"zpool|pool=s" => \$pool,
"what=s" => \$what
);
my $zpool = which('zpool');
if ($what and !$pool){
print <<_EOF;
Usage:
$0 [--zpool=<name>] [--what=<item>]
<name> is an optional zpool name. If specified, will only output info for this zpool.
<item> is one of size, alloc, frag, cap, dedup, health and if specified, will only output the corresponding value
If --what is specified then --zpool is mandatory.
The default (with no option) is to output all the info of all the zpool in a JSON format
_EOF
exit 1;
}
if ($zpool){
my $cmd = "$zpool list -H" . ( ($pool) ? " $pool" : "");
foreach (qx($cmd)){
#NAME SIZE ALLOC FREE EXPANDSZ FRAG CAP DEDUP HEALTH ALTROOT
#rpool 464G 7.49G 457G - 2% 1% 1.00x ONLINE -
if (m/^(?<pool>\w+)\s+(?<size>\d+(\.\d+)?)[MGT]\s+(?<alloc>\d+(\.\d+)?)[MGT]\s+.+\s+(?<frag>\d+(\.\d+)?)%\s+(?<cap>\d+(\.\d+)?)%\s+(?<dedup>\d+(\.\d+)?)x\s+(?<health>\w+)/){
$json->{$+{pool}}->{$_} = $+{$_} foreach (grep { $_ ne 'pool' } keys %+);
}
}
}
if ($what){
print ((defined $json->{$pool}->{$what}) ? $json->{$pool}->{$what} : 'ZBX_UNSUPORTED');
} else{
print to_json($json);
}