Guy,

We're sorry that things are not where you would want them to be placed. You are correct, the guides to install hypervisors, to install virtualization, and to install KVM are not under the letters, H, V, and K but rather 'I' for Install in the link you provided (Install Virtualization Using KVM on ClearOS 7). We apologize for state of the documentation and encourage you to submit any changes to the documentation you feel appropriate. As for compatibility, by all means, use CentOS, or ClearOS, which ever you like. As you know, CentOS does NOT include any professional support for your mission critical app. In that regard it is the same as ClearOS Community which is comprised of volunteers, like yourself, that improve things that they want to see improved. If the CentOS/ClearOS Community model is not sufficient to your scenario, try ClearOS Business or Redhat Enterprise. Be sure to get a license that includes technical support so that if you can't find a feature, they are obligated to point it out to you.

Also, we have recently made a change to our last bit of 'holdout' code that allows for users to use the upstream kernel (CentOS) if they prefer. The reason for the incompatibility in the past was that Redhat/CentOS had refused to add certain kernel functions that were necessary for certain apps and features. About last year, the last incompatibility was resolved and the roadmap has a remerge. ClearOS, from time to time, will fork or branch away from CentOS/RHEL to fix business use case scenarios. The last one was an inability to do bidirectional QoS which required a kernel fork.

FWIW, I'm currently building a 3-node KVM cluster on ClearOS that supports snapshots, auto live migrates, fencing, and auto-failover. Last week I built a 2-node, layer 1-7, high availability gateway using ClearOS and Gateway.Management.

That's an extremely offensive post and if I'd been on the receiving end, I'd not be helping further.

'twould appear you didn't look very hard. On the knowledgebase page, hit 'v' and there's 'Virtualbox'. Search the page for 'kvm' and there's 'Install Virtualisation using KVM' under 'I' for Install

Oh and by all means use ESXi - if you want to pay to get useable VMs (read the small print) .. ClearOS can either be free or paid; either way there's little difference and your VMs are fully useable.

(Post edited drastically -I was VERY sarcastic- as I was quite irrate by the attitude of the OP; I've mellowed a bit)

Nick Howitt wrote:

What makes you thing it is hidden? ClearOS, with just about one exception (the kernel) is binary compatible with Centos. Most Centos Howtos are compatible with ClearOS but the treatment of the firewall is different and ClearOS does not use Network Manager. Have you had a look in the Knowledgebase. There you will find articles like Install Virtualization Using KVM on ClearOS 7 and Install Graphical Desktop for ClearOS 7. You don't need the graphical desktop as you can manage everything through the command line with the "virsh" command.

How do i think this is hidden:
when i go to this link and don't see hypervisor:
[url]https://www.clearos.com/resources/documentation/clearos/index:kb#h[/url]
Or this link and i cant find virtualization:
[url]https://www.clearos.com/resources/documentation/clearos/index:kb#v[/url]
or
[url]https://www.clearos.com/resources/documentation/clearos/index:kb#k[/url]
for KVM

or the app store and I cant find clearVM or KVM or hypervisor.

Acting as a hypervisor will be the critical app of this box. ClearVM. is that an app or is it a cloud based PaaS? Or is is a separate OS? all 3?

Most CentOS are compatible? why would i install something that is mostly compatible but i wont know till i give it a go. if that is the critical app i am going centos. where it is compatible with Centos.
Or ESXi where virtualization is compatible.

I'm running ClearOS7 as a server hosting another COS7 server VM acting as a mail server, a Windows 10 VM, a Windows 7 VM, a Windows ME VM, an XP VM, and an XP VM running an Acorn Archimedes VM. If that's not enough, I've also got a Linux VM sitting there as well (although I've yet to run up the last). They're all running under VirtualBox headless, although I do have the COS7 desktop installed to make VM updates and extension installs easy.

What makes you thing it is hidden? ClearOS, with just about one exception (the kernel) is binary compatible with Centos. Most Centos Howtos are compatible with ClearOS but the treatment of the firewall is different and ClearOS does not use Network Manager. Have you had a look in the Knowledgebase. There you will find articles like Install Virtualization Using KVM on ClearOS 7 and Install Graphical Desktop for ClearOS 7. You don't need the graphical desktop as you can manage everything through the command line with the "virsh" command.