Support LLD discovery for MegaRAID controllers

zabbix_conf/raid_megaraid.conf

@@ -9,4 +9,7 @@
 
 # You can add a simple trigger on this check like:
 # { hostname:raid.mega.status.str( OK ) }=0
-UserParameter=raid.mega.status,/usr/bin/sudo /var/lib/zabbix/bin/check_raid_megaraid_sudo
+UserParameter=raid.mega.status[*],/usr/bin/sudo /var/lib/zabbix/bin/check_raid_megaraid_sudo -s $1 -o $2 -m $3
+
+# Discover if there's a controller to check
+UserParameter=raid.mega.discovery,/usr/bin/sudo /var/lib/zabbix/bin/disco_raid_megaraid_sudo

zabbix_scripts/disco_raid_megaraid_sudo

@@ -0,0 +1,40 @@
+#!/usr/bin/perl -w
+
+use strict;
+use JSON;
+
+my $json;
+@{$json->{data}} = ();
+
+my $megacli = undef;
+
+if (-x '/opt/MegaRAID/MegaCli/MegaCli64'){
+  $megacli = '/opt/MegaRAID/MegaCli/MegaCli64';
+}
+elsif (-x '/opt/MegaRAID/MegaCli/MegaCli'){
+  $megacli = '/opt/MegaRAID/MegaCli/MegaCli';
+}
+
+unless($megacli){
+  print to_json($json);
+  exit(0);
+}
+
+my $adapters = 0;
+open (ADPCOUNT, "$megacli -adpCount -NoLog |")
+        || die "error: Could not execute MegaCli -adpCount";
+
+while (<ADPCOUNT>) {
+  if ( m/Controller Count:\s*(\d+)/ ) {
+    $adapters = $1;
+    last;
+  }
+}
+close ADPCOUNT;
+
+if ($adapters > 0){
+  push @{$json->{data}}, {"{#CONTROLLERNO}" => $adapters};
+}
+
+print to_json($json);
+exit(0);