Virtual Machines templates

Templates available in Virtual Machines category

The below templates are available to check host/guest components of virtualization environment. Application templates explained.

Templates list

Hypervisors overview

Microsoft Hyper-V hypervisor is Windows native virtualization platform, earlier known as Windows Server Virtualization. It is built to replace older and less efficient, let alone convenient, platforms, such as Microsoft Virtual PC, Microsoft Virtual Server, and Windows Virtual PC. Hyper-V host can be run on Windows Server 2008 (and later Windows Servers), as well as on Windows 8 (and later client Windows versions), provided they are 64-bit.

Templates description

The below templates belong to Virtual Machines category:

Hyper-V Hypervisor provides Hyper-V environment (hypervisor) state parameters, such as resources utilization, number of VMs in critical state, traffic status.

Hyper-V Virtual Machine provides Hyper-V virtual machines state parameters such an uptime, CPU usage, memory and traffic usage.

Hyper-V Virtual Storage provides means to monitor errors count, read and write performance of Hyper-V Virtual Storage Device.

KVM Guest Machine Status checks sate variable and checks general health of “guest”, i.e. virtual machine itself; note that that doesn’t relate to checking actual OS running within the guest, it only refers to guest as seen from environment where it is running (“host”)

KVM Hypervisor Status provides the virtualization environment (hypervisor) state parameters, such as resources utilization, unused resources amount.

Virtual Machines monitoring use cases

  • if you run Hyper-V driven virtual machines, you should make use of Hyper-V Hypervisor template to get alerted both of critical states of your virtual assets and of possible future problems with them, related to their resources usage
  • for every Hyper-V virtual machines create Hyper-V Virtual Machine template based monitors, to watch for machine usage stats and take action if there’s any abnormality in usage trends
  • to make sure your Hyper-V machines can use storage as expected, create Hyper-V Virtual Storage template based monitors, to watch for possible errors and get alerted if read and/or write activity begins to degrade
  • every computer running KVM-driven virtual machines (host) should be monitored using KVM Hypervisor Status template: all the vital metrics should be paid attention to, availability of host resources can significantly affect all the guest OS efficiency
  • for every guest OS (virtual machine) running on KVM host, it is advised to create its own set of monitors using KVM Guest Machine Status template; not that for busy hosts with multiple guests the resulting amount of monitors can be large – select only those you do actually need

Virtual Machines monitoring tips

  • there are command-line facilities, such as virsh for KVM/QEMU, that should be used wherever possible (they allow collecting data in one compact call)
  • when using APIs, such as AWS APIs, use as little permissions as possible, even if using secure channels to collect data
  • monitor activity on host; if unusually high disk I/O or other resources consumption happens, it will affect running guests as well
  • keep guest/host polling reasonably infrequent: otherwise, you might affect guests’ performance