Why use OpenVZ? [message #22909] |
Wed, 07 November 2007 12:49 |
RobinVossen
Messages: 36 Registered: November 2007
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Hi, I wonder why use OpenVZ instead of qemu or KVM?
What does OpenVZ has that is special?
I also wonder, can I change the size of my Harddrive when I made it with OpenVZ? After looking in the Documents I thought that I saw that I can tunnel it through VNC easy?
Well, let me know.
Cheers,
Robin
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Re: Why use OpenVZ? [message #22911 is a reply to message #22909] |
Wed, 07 November 2007 12:53 |
ugob
Messages: 271 Registered: March 2007
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Senior Member |
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The think I like most about OpenVZ is its lightweight. On a PIII 1.2 with 1.7 GB RAM, I run 11 smal Virtual Environment, and the total or RAM used for all the VE is 638 MB.
Also, you should be using LVM if you want to be able to resize your /vz partition. You can also move your /vz to another partition if needed. You could even run one VE in /vz1 and another in /vz2 (but it is less easy to manage).
BTW, openvz is not making your hard drive. OpenVZ behaves like a regular linux host, so you can use all the usuall tools, mdadm, lvm, resize2fs, ext2online, etc.
About VNC? Yes, there is a way to run something like that, but I never did myself, I never install anything graphical on my servers.
Please read the manual before asking questions:
http://download.openvz.org/doc/OpenVZ-Users-Guide.pdf
Please have a look at the wiki before asking questions:
http://wiki.openvz.org/Main_Page
[Updated on: Wed, 07 November 2007 12:56] Report message to a moderator
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Re: Why use OpenVZ? [message #22920 is a reply to message #22919] |
Wed, 07 November 2007 14:31 |
ugob
Messages: 271 Registered: March 2007
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Senior Member |
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RobinVossen wrote on Wed, 07 November 2007 09:24 | Ok, so now I have OpenVZ vs KVM.
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From what I read, KVM looks more like xen. Needs virtualization-enabled processors, more overhead, but can run many OSs. OpenVZ has very low overhead, but can only run linux (only some distros).
You told me that KVM had a Changeable size of HD?
I don't know KVM at all. Are you talking about the host or the VM?
In openvz, you can resize the size of the HD of a VM with one command, while the VM is running.
And OpenVZ is made to run 1 OS Virtual with diffrent PCs in it? (Container)[/quote]
I don't understand this question.
Please read the manual before asking questions:
http://download.openvz.org/doc/OpenVZ-Users-Guide.pdf
Please have a look at the wiki before asking questions:
http://wiki.openvz.org/Main_Page
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