| Re: OpenVZ vs. Other Virtualization? [message #20749 is a reply to message #20602] |
Tue, 25 September 2007 23:02   |
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dowdle
Messages: 261
Registered: December 2005
Location: Bozeman, Montana
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Senior Member |
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What is it you want to run on your virtual machine(s)?
Check out this link: http://en.wikipedia.org/wiki/Operating_system-level_virtuali zation
Basically, OS Virtualization offers a much lighter footprint per virtual machine than Machine Virtualization does. How much lighter? Well, in OpenVZ... a VPS/VE/VM (whatever you want to call it) only takes up the resources needed to run the services you want... so a simple VPS with only basic services and Apache (static pages, no PHP) takes up about 24MB or so in approximately 16 processes. That means that you can fit a lot of VPSes on a physical machine (density)... and they actually scale well... because they only add the overhead needed to run the additional processes.
Someone else already mentioned there are quite a few pre-created OS Templates for a number of distributions beyond Fedora and CentOS. Me? I prefer CentOS... as it is what I run on the HN and most VPSes... but that is a personal preference.
Regarding GUI environments within your VPS, I've successfully installed XFCE4, GNOME and KDE inside of both Fedora 7 and CentOS 5. There is a little trick involved to make sure you don't accidentally install udev... but other than that, it is doable... and you can access it via vncserver/vncviewer... but that is only if you want to run a complete desktop environment.
If you just want to occationally run a GUI app, as previously mentioned, you can do so over ssh with the -X flag.
--
TYL, Scott Dowdle
Belgrade, Montana, USA
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