[mythtv-users] Virtualisation .. can it do this? (HP ProLiant MicroServer N40L)

[Thomas Mashos]

On Fri, Sep 28, 2012 at 6:54 PM, Raymond Wagner <raymond at wagnerrp.com> wrote:
> On 9/28/2012 17:07, Robert Rust wrote:
>>
>> On Wed, Sep 26, 2012 at 10:34 PM, Raymond Wagner <raymond at wagnerrp.com>
>> wrote:
>>>
>>> On 9/26/2012 20:34, Phill Edwards wrote:
>>>>
>>>>
>>>> I have a virtual MythBuntu 12.04 running on Citrix XenServer with a
>>>> HDHomerun. All going fine. One benefit of this approach I wanted to
>>>> point out is that it's running alongside other VMs 24 hours per day.
>>>> That means I'm not using extra electricity just to keep a backend
>>>> running. So I'm very happy with having a virtualised backend.
>>>
>>>
>>>
>>> Those other applications can't simply be run on the same Ubuntu system
>>> image
>>> as your backend?
>>>
>>
>> As someone who recently switched from a Mythbuntu system running other
>> roles in addition to a backend, I can speak to a couple of benefits:
>> 1. I don't have to worry about the various dependencies my different
>> apps have breaking other apps.  I can update php, video drivers, etc.,
>> without worry.
>> 2. I don't have to worry about a configuration for one of my various
>> web apps messing up MythWeb.
>
>
> You can to this by installing those applications into their own chroot.
> Since the chroot environment will not have access to any files outside the
> chrooted directory, it will be completely unaffected by any changes made to
> them.
>
>> 3. If I need to do something that requires a reboot of the backend, I
>> can just do it without affecting other services.
>
>
> The only thing you can do that would require a reboot of the backend is
> change to a different kernel. Applications can be restarted, kernel modules
> can be reloaded.
>
>> p.s. I will confess that getting my tuner cards working in a
>> virtualized backend was considerably less straight-forward than a
>> non-virtualized environment, but I think it's worth it.
>
>
> When your reasons for using a virtualized environment can be achieved
> without virtualization, and the hardware difficulty that results from
> virtualization, why complicate things by using it?
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Because Virtualization!

Thanks,

Thomas Mashos