Add discovery script and conf for nut ups

zabbix_conf/nut_ups.conf

@@ -30,3 +30,9 @@ UserParameter=ups.status[*],upsc $1 ups.status
 # Key: ups.model[UPS]
 # Type of information: Text
 UserParameter=ups.model[*],upsc $1 ups.model
+
+# UPS discovery
+UserParameter=hardware.ups.discovery[*],/var/lib/zabbix/bin/disco_nut_ups $1
+
+# This is a new, more generic nut ups UserParameter
+UserParameter=hardware.ups[*],upsc $1 $2

zabbix_scripts/disco_nut_ups

@@ -0,0 +1,17 @@
+#!/usr/bin/perl -w
+
+use JSON;
+
+my $json;
+
+if (system("upsc -l >/dev/null 2>&1") == 0){
+    foreach my $ups (`upsc -l`){
+        chomp($ups);
+        push @{$json->{data}}, {"{#UPSNAME}" => $ups};
+    }
+    print to_json($json) if (defined $json->{data});
+}
+else{
+    print 'ZBX_NOTSUPPORTED';
+}
+exit(0);