On Oct 24, 2007, at 6:57 PM, csnyder wrote:
On 10/24/07, Pete Czech - New Possibilities Group, LLC
<[EMAIL PROTECTED]> wrote:
This is a little bit off topic, but I'm wondering how the group feels
about running servers off of VMWare. I have a social networking site
currently with about 1M+ uniques/mo. Runs on php5/MySQL. I've been
toying with moving to servers hosted on VMWare and load balanced.
Anyone have any experiences, pros, cons of installing such an
architecture?
Thanks,
Pete Czech
There have been recent issues running Linux on VMWare--you have to
configure 2.6 kernels not to hit the clock so hard, a fairly easy fix
in recent versions. I still saw above average clock skew on mine
(30-40 seconds over 24 hours), but ymmv. I've never tried to put one
under production load.
I like virtualization a lot for simple things like proxys and mirrors,
which I'm happy to let somebody else host. There are a lot of folks
doing VPS. My advice is to find a host that allows you to build your
own images, and stay away from the "web control panel" unless you have
time to audit it. Check out Amazon's EC2, also.
--
At my office we run some FreeBSD virtual machines in VMWare and serve
some PHP web applications including Plesk and some custom apps. As
long as you have decent hardware for it it's not really a problem,
but be careful with your clock - there are some tweaks you need to
perform to keep the virtual server clock in sync with the real clock.
NTP helps but if you don't adjust some RTC settings the clock will be
horribly skewed (this is with 6.1, not sure about more recent
versions). In terms of PHP performance I haven't noticed any
significant issues.
--Mike H
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