Final answer:
To gain access to OS level metrics on a virtual machine, you need a monitoring tool or software installed on the machine as well as an agent software to collect and transmit the metrics.
Step-by-step explanation:
To gain access to OS level metrics on a virtual machine, we need a monitoring tool or software installed on the virtual machine. One common monitoring tool is the Virtual Machine Monitor (VMM) which provides insight into the guest operating system and its metrics. Another important requirement is the agent software installed on the virtual machine to collect and transmit the metrics to a centralized monitoring system. The monitoring system can then analyze and display the OS level metrics.