[mythtv-users] Mythbacked on ESXi 5.0
raymond at wagnerrp.com
Tue Oct 25 16:39:00 UTC 2011
On 10/25/2011 12:15, Jay Ashworth wrote:
> ----- Original Message -----
>> From: "Raymond Wagner"<raymond at wagnerrp.com>
>> As I keep saying over and over and over again, power savings are _not_
>> a feature of virtualization. Power savings is a feature of
>> consolidation. Virtualization is for absolute isolation. MythTV,
>> MySQL, Samba, Postfix, Dovecot, Apache, Cacti, and any number of other
>> applications will all live happily right next to each other on the same
>> system. In fact, since you're likely sharing the same data in Samba as
>> you are using in MythTV, it in fact makes far less sense to run those
>> in a virtual machine, considering one or both of them is going to have to
>> access those local disks through a network share.
> And as I said, the number of applications which have given up on trying
> to play nice in a dark maze of twisty dependencies, and bring along all
> their own components, making them *very* difficult and time-consuming to
> make place nice on one distro install is an order of magnitude higher than
> it was, say, 10 years ago, and getting worse.
No, but there are basic filesystem isolation tools like chroot, and more
advanced "para-virtualization" like VServers and OpenVZ that offer
memory and network isolation, without the overhead and complexity of a
full virtualized machine.
I will fully admit that VM vendors have spent gobs of time and money
developing tools to make it very simple to create new instances.
Meanwhile, most para-virtualization guides start with downloading and
extracting a base distribution archive, and proceeding manually from
there in. I would love to see someone develop similar automated setup
and downloadable instances as you find for full VMs.
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