How to Install RedHat Enterprise Virtualization (RHEV) 3.5 – Part 1

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Mohammad Dosoukey

Mohammad is Linux system administrator at his university in Egypt . He is a person who fond of Virtualization, Cloud and System administration. He is also RHCE and VCP5-DCV .

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19 Responses

  1. jpribeauville says:

    Hi,

    Does it mean that it works by using, on the same physycal host, three VMs one for management , two for hosting RHEV-H ?

    KVM Guests are then running on a already virtualized host ?

    No performance issue ?

    Thanks for hlep.

    J.P. Ribeauville

  2. Nick says:

    Hello!
    I right understand – RHEV is a proprietary system of red hat, and need buy it ?

    • Mohammad Dosoukey says:

      Yup !!
      It is a seprated RedHat product with custom license. Hoswever, the product itselfy you can got it free as i mentioned above for testing proposals….

  3. Debasish says:

    Sir,
    Really very nice post but what about the other posts as mentioned above are waiting for the other ones as mention above. Any way very nice presentation and easy to understand….
    Been waiting for your other posts..

  4. plustwo says:

    Thanks Mohammad for the tutorial. Very helpful so far. Awaiting next post

  5. omipenguin says:

    Dear, I just few days back installed RHEV 3.5 for our org. And that was the first time i installed RHEV.

    I will like to give one damn advice .

    > Dont connect your hypervisor to Manager until you are sure your networking is correct and all the bonding+vlans+bridging are correct.

    Because hypervisor have this bug i guess that if you change the configuration after connecting to manager and restart the hypervisor , after restart the hypervisor will bring back the old configuration even though i used “Persist” command.

    But i need to know one thing . Is it possible to add new Hypervisors in already existing Datacenters or do i have to create New DC and Clusters for each node ????

  6. vlad says:

    I still puzzled about why not to build the management into hyper visor it self?
    why do we need 2 node setup? the actual server and a management node.
    I understand that in multi node setup management is overhead, but it could be an option during an install to designate one server as Master and setup all management tools on it. it would than be possible per user choice, to include management tools on any and all servers in the cluster and replicate/share the configuration between them for redundancy. if master server is on the fritz just login on one of the standbys and continue as usual until master is back up and running. as this setup should use shared storage, all of it should be available fro many/all nodes and thus point to the same location. what is the fascination with separate consoles?

    • Dim says:

      This is not a 2 node setup, this is a controller node and hundreds if not thousands of hypervisors it controls. HA and other advanced functionality is so much easier when you have an overlooking entity, instead of developing complex algorithms that would determine a quorum among themselves. Having said that, you can deploy the manager/engine/controller as a VM in the setup it controls, thus eliminating the requirement for an extra hardware host.

      > I understand that in multi node setup management is overhead, but it could be an option during an install to designate one server as
      > Master and setup all management tools on it

      So you propose setting up every host in the cluster with all the extra software it takes to run the engine as well? How do you propose maintaining the database integrity when there are thousands of hosts? How do you avoid splitbrain? You need to understand, when you talk about one manager host and one hypervisor, it looks like a waste, but RHEV is designed to be a massive solution, where one engine controls hundreds to thousands of hosts and tens of thousands of VMs. With these proportions, having an extra server or two for the engine is neglectable.

      > if master server is on the fritz just login on one of the standbys and continue as usual until master is back up and running

      a recipe for splitbrain right there.

      > as this setup should use shared storage, all of it should be available fro many/all nodes and thus point to the same location.

      Under RHEV, only the hypervisors really need to have access to the storage, quite often not over IP, the engine can be a small machine or a VM, with access to nothing but the management network.

      > what is the fascination with separate consoles?

      please elaborate

  7. Awesome post Mohammad. Instead of using VMware eats RAM so much, Better use Virtual-box to save more system resources.

  8. Bouzeghoub says:

    Thank you for good presentation.

  9. poromjit singha says:

    hi i have a workstation with dual booting (win7/rhel5.8) and dual graphic card Nvidia qudro 6000. My both graphic card is woring fine with windows7 with dual monitor but in linux one card is working and n one monitor display is coming. i have update the driver still same issue also i have in PCI list with command LSPCI but only one graphic card is showing there. So please can u help me to sort out is problem. I will be very thank full to you.

  10. Paresh Bhide says:

    Thnx Mohammad for RHEV article.. waiting for next one & series..

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