How to install and configure oVirt 4.0 on CentOS 7 / RHEL 7

Pradeep Kumar

I am a huge fan of open source and love to share How To's tutorials on Linux, Cloud and DevOps. I have been working as Linux Consultant, Cloud & DevOps Engineer since 2010

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26 Responses

  1. hos7ein says:

    tnx for this article

  2. Umar says:

    Nice one man!

  3. Olivier says:

    oVirt is **one** alternative to vSphere 😉 For Xen world, there is Xen Orchestra, which is also Open Source. See ‘’

  4. nda888 says:


    I got this problem when install ovirt4.0.3

    When i access via browser it alert “The client is not authorized to request an authorization. It’s required to access the system using FQDN.”

    Click “continue” choose “Adminstrator Portal” it loop to alert message

    How can i do to resolve?
    Please help


  5. Try to access the oVirt Portal using FQDN(Fully Qualified Domain Name) instead of IP address , In case DNS entry is not configured update your system’s hosts file put below entry so that it can resolve FQDN into your oVirt Engine Server’s IP address.


  6. isahak says:

    Very Helpful!!!

  7. Chad says:

    How do I access via IP instead of FQDN?

  8. sage says:

    i install on centos the ovirt and i got error, after i follow the steps when i want access the administrator :
    The client is not authorized to request an authorization. It’s required to access the system using FQDN.
    ‘’ its a example on the link
    i read on here the solution is edit the hosts in /etc/hosts , so i write in ssh console :
    nano /etc/hosts
    and i have this: localhost localhost.localdomain localhost4 localhost4.localdomain4
    ::1 localhost localhost.localdomain localhost6 localhost6.localdomain6

    How i resolve the problem what to add, maybe someone can help the novices.
    thank you a lot

    • Hello Sage,

      Set the FQDN on your server with the command “hostnamectl set-hostname fqdn” and update your server’s host file as well, add the entry like below :

      ip_address_of_server FQDN

      Also add the same above entry in your machine from which you are trying access ovirt portal. Hope these steps will resolve the issue.

  9. Louis says:

    When i access via browser it alert “The client is not authorized to request an authorization. It’s required to access the system using FQDN.”
    Click here to continue.

    How can i do to resolve?

    • Nikel says:

      Same issue, not sure is it a common issue or…. Running on the vmware vm.

    • Nikel says:

      For those who tried on vmware or virtualbox:

      On Windows host:

      Install xming server from:
      Install Putty and access the server via ssh (enable x11 before opening session)

      On Server guest:

      yum install xorg-x11-xauth xterm
      vi /etc/ssh/sshd_config/

      X11Forwarding yes

      yum install firefox


      Now you should be able to access web console.

    • Stefano Stagnaro says:

      You can specify an alternative FQDN simply by editing the SSO_ALTERNATE_ENGINE_FQDNS variable in /etc/ovirt-engine/engine.conf.d/11-setup-sso.conf on the oVirt Engine.

      Then restart the engine daemon:
      # systemctl restart ovirt-engine.service

  10. Subarno Saha says:

    Helpful tutorial 🙂

  11. ARJUN says:

    Hi ,

    can you plz share the steps to create data centers, cluster and Virtual machines.

  12. Stephen Liu says:


    vm1 – ovirt engine, IP (internal), on CentOS 7 Gnome desktop
    vm2 – ovirt node, IP (internal), on CentOS 7, minimum
    Host – Ubuntu 16.04 Gnome desktop

    I followed your document to install ‘ovirt engine’. Installation went through without problem. It works without problem as well. On Host browser running, ‘oVirt Open Virtualization Manager’ can be connected and login.

    ‘ovirt node’ on vm2 can be connected and login on Host browser running

    My question is “can I add ‘ovirt node’ on vm2 in ‘ovirt engine’ on vm1”? Or I must install ‘ovirt node’ on CentOS 7 of vm1?

    Please advise. Thanks


  13. Adam says:

    I recommend using the ovirt-release-master instead of ovirt-release-40, given that it looks like 41 is the current stable and 42-pre is already available.

  14. sunxity says:

    Ovrit platform for the virtual machine management how to implement the server after startup, the virtual machine is automatically switched on?

  15. txsastre says:

    hi ! thanks for the tutorial.

    question: now I have 3 servers with xenserver, how could I do the same installation with oVirt ?
    I assume that ovirtnode is for each hardware machine, but where do I have to install the ovirt engine ? Can it be hosted inside a host ? or do I have to need an extra machine to have ovirt engine

    thanks !!

    • Hi,

      oVirt engine can be installed in a CentOS 7 VM outside of oVirt Nodes, whereas oVirt Node will be installed on Physical machine or in Lab it can be installed on Virtual Machines.

  16. txsastre says:

    thank you.
    I’ve search more about it, and also I found that once installed you can migrate the ovirt-engine into a new machine inside the hosts.

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