VMmanager 6: Administrator guide

Server requirements


Hardware requirements

A server must be physical or virtual based on KVM virtualization.

A server has to meet the following requirements:

RAM2 Gb4 Gb
Disk space40 Gb100 Gb


The more virtual machines will be created on the server, the more RAM will be consumed.


The processor must support the SSE4.2 instruction set.

System requirement

Supported operating systems:

  • CentOS 7 x64;
  • CentOS 8 x64;
  • Ubuntu 20.04.

Install the platform on a fresh installation of the operating system without third-party repositories and additional services. 

Network settings

Allow incoming connections to ports:

  • 22/tcp — SSH service. This port must be available to all cluster nodes and, if necessary, for the public network;
  • 5900-6900/tcp — QEMU VNC. If access to VNC is only provided through the server with VMmanager, the range of ports must be open for the network integrating the cluster nodes;
  • 16514/tcp — libvirt virtual machines management service;
  • 49152-49261/tcp — libvirt migration services;
  • 443/tcp — HTTPS.


We do not recommend disabling the firewalld service on the server with CentOS 7 OS. Disabling the service can lead to malfunctioning of the platform.

Related topics

Thank you for your feedback!
Was the article useful?
Tell us why not:

it does not match the title

it was hard to understand

I didn't find the answer

recommendations from the article did not help


Tell us what you didn't like in the article: