This is a free and quite convenient utility to manage our VMware Infrastructure virtual environment. Through SNMP it will pass us basic information about the virtual machines that each ESX server has. It will give us information about the CPU used, RAM used as your network traffic (Tx & Rx).

The first thing we need to do is in the firewall of each ESX allow SNMP traffic. To do this,, from the VMware Infrastructure Client console, We're going to a host, to the tab “Configuration” and about the “Security profile”. We must check 'SNMP Server’ from the options enabling traffic 162 (UDP).

Optionally, we can configure the SNMP service of each host, To do this we would edit the file /etc/snmp/snmpd.conf, and we must start the service with: '/etc/init.d/snmpd start'.

We download the utility: “VM Monitor” from its official website (www.solarwinds.com), We install it and execute it. When you open it, you enter the name of an ESX host and you can check the status of the host as well as its virtual machines. We will be able to minimize the tool in the taskbar so that it shows us the alerts.