Zabbix HDD LLD

/etc/zabbix/device.discovery.pl:
#!/usr/bin/env perl
#
# Zabbix device discovery to monitor Linux devices
# https://www.kernel.org/doc/Documentation/iostats.txt

$first = 1;

print "{\n";
print "\t\"data\":[\n\n";

for (`/bin/cat /proc/diskstats | /usr/bin/awk '{ print \$3 }'`)
{
    ($device) = m/(\S+)/;

    print "\t,\n" if not $first;
    $first = 0;

    print "\t{\n";
    print "\t\t\"{#DEVICE}\":\"$device\"\n";
    print "\t}\n";
}

print "\n\t]\n";
print "}\n";


/etc/zabbix/zabbix_agentd.conf.d/hdd.conf:
# Disk IO metrics

# Discovery script
UserParameter=linux.proc.diskstats.discovery,/etc/zabbix/device.discovery.pl
# Keys (See https://www.kernel.org/doc/Documentation/iostats.txt)
# TODO: Augment the device.discovery.pl script to double as a stat selector
UserParameter=linux.proc.diskstats.read.completed[*],/bin/grep " $1 " /proc/diskstats|tr -s ' '|cut -d' ' -f5
UserParameter=linux.proc.diskstats.read.merged[*],/bin/grep " $1 " /proc/diskstats|tr -s ' '|cut -d' ' -f6
UserParameter=linux.proc.diskstats.read.sectors[*],/bin/grep " $1 " /proc/diskstats|tr -s ' '|cut -d' ' -f7
UserParameter=linux.proc.diskstats.read.ms_spent[*],/bin/grep " $1 " /proc/diskstats|tr -s ' '|cut -d' ' -f8
UserParameter=linux.proc.diskstats.write.completed[*],/bin/grep " $1 " /proc/diskstats|tr -s ' '|cut -d' ' -f9
UserParameter=linux.proc.diskstats.write.merged[*],/bin/grep " $1 " /proc/diskstats|tr -s ' '|cut -d' ' -f10
UserParameter=linux.proc.diskstats.write.sectors[*],/bin/grep " $1 " /proc/diskstats|tr -s ' '|cut -d' ' -f11
UserParameter=linux.proc.diskstats.write.ms_spent[*],/bin/grep " $1 " /proc/diskstats|tr -s ' '|cut -d' ' -f12
UserParameter=linux.proc.diskstats.io.current[*],/bin/grep " $1 " /proc/diskstats|tr -s ' '|cut -d' ' -f12
UserParameter=linux.proc.diskstats.io.ms_spent[*],/bin/grep " $1 " /proc/diskstats|tr -s ' '|cut -d' ' -f13
UserParameter=linux.proc.diskstats.io.weighted[*],/bin/grep " $1 " /proc/diskstats|tr -s ' '|cut -d' ' -f14