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Re: Best practice Linux support vendors?

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General Schvantzkoph wrote:

 
> KVM is pretty easy to use. I'm using Scientific Linux 6 on my servers and
> KVM VMs for both Windows and Linux. It's trivial to create a VM using the
> virt-manager. After you've created your base VMs you can clone them by
> simply making copies of the virtual disk files. With a Linux VM all you
> have to do is reconfigure the networking for each clone and you're done.
> For a Windows VM you will have to patch the registration number to create
> multiple Windows VMs that can run simultaneously (it's exactly the same
> process as if you were and OEM cloning Windows disks). To back up a VM
> just make copies of your working virtual disks. I use SAMBA and NFS for
> all of my user space on the VMs, that way backups can be done on the
> native Linux systems.
> 
> The downside of KVM is that the virtual IO is pretty slow. For CPU
> intensive programs this isn't a problem but of IO intensive programs
> you'll notice it. VMware has much better IO performance but it's not free
> like KVM.

OpenVZ is also interesting. It's not full virtualisation - rather it's 
"containerisaton". Everything runs in it's own space under the same kernel.

Bit like a chroot jail, except each jail:

1) cannot see processes and other facets in other jails

2) each jail is resource limited in several ways at a jail level

3) each jail runs its own full userland but shares a common kernel.

Needless to say, it's a lot more efficient if that model suits you.

-- 
Tim Watts

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Thread

Best practice Linux support vendors? snorble <snorble@hotmail.com> - 2011-07-13 19:12 -0700
  Re: Best practice Linux support vendors? Tim Watts <tw@dionic.net> - 2011-07-14 08:36 +0100
    Re: Best practice Linux support vendors? snorble <snorble@hotmail.com> - 2011-07-15 10:17 -0700
      Re: Best practice Linux support vendors? The Natural Philosopher <tnp@invalid.invalid> - 2011-07-15 18:35 +0100
      Re: Best practice Linux support vendors? General Schvantzkoph <schvantzkoph@yahoo.com> - 2011-07-15 20:09 +0000
        Re: Best practice Linux support vendors? Tim Watts <tw@dionic.net> - 2011-07-16 07:49 +0100
          Re: Best practice Linux support vendors? General Schvantzkoph <schvantzkoph@yahoo.com> - 2011-07-16 13:40 +0000
            Re: Best practice Linux support vendors? Tim Watts <tw@dionic.net> - 2011-07-16 18:19 +0100
              Re: Best practice Linux support vendors? Aragorn <stryder@telenet.be.invalid> - 2011-07-17 03:44 +0200
  Re: Best practice Linux support vendors? aw@anhrefn.saar.de - 2011-07-14 15:25 +0200
    Re: Best practice Linux support vendors? notbob <notbob@notbob.invalid> - 2011-07-14 14:13 +0000
    Re: Best practice Linux support vendors? The Natural Philosopher <tnp@invalid.invalid> - 2011-07-14 19:01 +0100
  Re: Best practice Linux support vendors? ray <ray@zianet.com> - 2011-07-14 14:51 +0000
  Re: Best practice Linux support vendors? JeffM <jeffm_@email.com> - 2011-07-14 14:34 -0700
    Re: Best practice Linux support vendors? John Hasler <jhasler@newsguy.com> - 2011-07-14 17:32 -0500
      Re: Best practice Linux support vendors? Tim Watts <tw@dionic.net> - 2011-07-15 06:59 +0100
    Re: Best practice Linux support vendors? Tim Watts <tw@dionic.net> - 2011-07-15 06:57 +0100

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