VMware Labs released a new Fling called VMware OS Optimization Tool. The download is available as msi package and is about 4MB. Make sure you also check out the user guide.

Quote taken from the Fling page:

The VMware OS Optimization Tool helps optimize Windows 7 desktops for use with VMware Horizon View. The optimization tool includes customizable templates to enable or disable Windows system services and features, per VMware recommendations and best practices, across multiple systems. Since most Windows system services are enabled by default, the optimization tool can be used to easily disable unnecessary services and features to improve performance.


You can perform the following actions using the VMware OS Optimization Tool:

  • Analyze the operating system
  • Optimize the operating system
  • Viewing History of Optimization and roll back
  • Designing/managing template


Requires Windows 7/8 and .Net framework.

VMware OS Optimization Tool

DELL EqualLogic

Dell EqualLogic PS Series Firmware v6.0.5 provides some key maintenance fixes for enhanced stability and performance of your Dell EqualLogic SAN.

You can get the firmware for your SAN and all other documents by logging in to EqualLogic support with your support account.

What is Munin?

Munin is a networked resource monitoring tool that can help analyze resource trends and “what just happened to kill our performance?” problems. It is designed to be very plug and play. A default installation provides a lot of graphs with almost no work.

Munin can be installed on any Linux system (and there is a basic Windows version) and works with the plain old server-agent idea. The reason behind this is that you can create custom scripts which will be converted into graphs. Munin is written in Perl and plugins are easy to write, you can use any language for this as long as the output is data which the Munin master can understand. “Porting” to or from any Unix platform is quite easy if you have some Perl/shell/sysadmin experience. Currently there are plugins for Linux, FreeBSD, NetBSD, Solaris, AIX and of course cross-platform plugins.

How does it work?

The main Munin server will ask the agents for data and then convert this into RRD files which generates graphs. These are then displayed using a basic webpage. This page will contain a list of hosts you have in your Munin config and each of theses hosts will have the service graphs listed which you monitor. There are plenty of guides out there on how to install Munin so I won’t go into details on this.

What do I need?

To use this plugin you will need the following:

  • 1 Munin master server (munin and munin-node service installed)
  • VMware vSphere SDK for Perl installed on this server
  • 1 or more ESXi hosts
  • This script

What does it do?

This plugin will make a connection with an ESXi host and gather 2 things:

  • CPU usage (percentage)
  • Memory usage (percentage)

How to install this plugin?

To install this plugin you will need to do the following steps.

cd /usr/share/munin/plugins
wget https://raw.github.com/nielsengelen/vmware-munin/master/esxi_cpu_mem_
cd /etc/munin/plugins
ln -s /usr/share/munin/plugins/esxi_cpu_mem_ esxi_cpu_mem_<FQDN>

In the above replace with either the hostname or IP from the ESXi you want to monitor. Example:

ln -s /usr/share/munin/plugins/esxi_cpu_mem_ esxi_cpu_mem_192.168.1.150

Next we will add the username and password for the ESXi in the munin configuration which can be found under: /etc/munin/plugin-conf.dmunin-node. Add the following code.

env.username <ESXi USER>
env.password <ESXi PASS>

In the above replace with either the hostname or IP from the ESXi you want to monitor as you have created the symlink file, next add the username and password. Example:

env.username root
env.password vmware

After this restart munin-node.

/etc/init.d/munin-node restart
service munin-node restart

The code

The code can be also found on GitHub.

#!/usr/bin/perl -w
# ESXi host CPU/memory plugin for Munin by Niels Engelen
# http://www.foonet.be

use strict;
use warnings;
use VMware::VIRuntime;
use VMware::VILib;


my $esxihost = basename($0);
$esxihost =~ s/esxi\_cpu\_mem\_//;
my $username = Opts::set_option ('username', $ENV{'username'});
my $password = Opts::set_option ('password', $ENV{'password'});
my $url = Opts::set_option ('url', "https://$esxihost/sdk/webService");
my ($host_info);

if ( exists $ARGV[0] and $ARGV[0] eq "config" ) {
  print "graph_title ESXi CPU/Memory ".$esxihost." \n";
  print "graph_args --base 1000 -r --lower-limit 0 --upper-limit 100 \n";
  print "graph_vlabel % \n";
  print "graph_category ESXi CPU/Memory\n";
  print "graph_scale no\n";
  print "mem.label MEM used\n";
  print "mem.draw AREA\n";
  print "cpu.label CPU used\n";
  exit 0;
} else {
  $host_info = Vim::find_entity_view(view_type => 'HostSystem', properties => ['summary.hardware', 'summary.quickStats'], filter => {'summary.runtime.connectionState' => 'connected'});
  exit 0;
sub get_host_mem_info {
      	if ($host_info) {
		my $percentMemoryUsed = ($host_info->{'summary.quickStats'}->overallMemoryUsage * 1024 * 1024 / $host_info->{'summary.hardware'}->memorySize) * 100;
		printf "mem.value %.2f\n",$percentMemoryUsed;
sub get_host_cpu_info {
	if ($host_info) {
		my $percentCpuUsed = ($host_info->{'summary.quickStats'}->overallCpuUsage / ($host_info->{'summary.hardware'}->cpuMhz * $host_info->{'summary.hardware'}->numCpuCores)) * 100;
		printf "cpu.value %.2f\n",$percentCpuUsed;

The result

Munin ESXi CPU Memory

VMware Labs released a new Fling called ESXi Google Authenticator. The download is available as VIB package. If you want to make adjustments it is also possible to download the source code.

Quote taken from the Fling page:

Google Authenticator is a project that provides two-factor authentication by using both a PAM (Pluggable Authentication Module) module and a mobile application for generating one-time passcodes. In ESXi Google Authenticator, we modified the source code of Google-Authenticator to enable two-step authentication on ESXi (5.0, 5.1).


  • Two-Factor Authentication for ESXi Shell and SSH access
  • Supports multiple administrators login on esx5.1, and single admin (root) on esx5.0
  • Support for 30-second TOTP codes
  • Support for emergency scratch codes
  • Protection against replay attacks


You must have ESXi 5.0 and higher.


There are 7 steps which you will have to follow. You can find them on the instructions page.