[Users] How to determine a container from the filesystem?

Brad Alexander storm16 at gmail.com
Fri Apr 13 21:40:09 EDT 2012


Thanks Joe!

I didn't realize that facter had that level of detail. For my opevz
hosts, virtual => openvzhn, but the containers all have virtual =>
openvzve...

--b

On Fri, Apr 13, 2012 at 6:36 PM, jjs - mainphrame <jjs at mainphrame.com> wrote:
> Unfortunately that won't work if you are using only bridged networking - I
> don't have any venet devices on my servers.
>
> My host has only lo, ethx, brx, and vethnnxx devices, and the containers
> have only lo and ethx devices.
>
> The puppet "facter" program is able to figure out if if a machine is a vz CT
> or a vz host, but I haven't looked into how it does it.
>
> Joe
>
>
> On Fri, Apr 13, 2012 at 3:24 PM, Corey Carpenter <fruitwerks at gmail.com>
> wrote:
>>
>> You could run ifconfig and grep for venetX:X or by mac address (all zero)
>> unless you have chenged that specifically. I physical machine should not
>> have venetX:X, simply venetX. This may be distribution dependent though, I
>> am not sure.
>>
>> - C
>>
>>
>> On Fri, Apr 13, 2012 at 8:07 PM, Brad Alexander <storm16 at gmail.com> wrote:
>>>
>>> I just found out through the proxmox-ve forums that running ntp on a
>>> container is considered a Bad Thing. So I am reworking my puppet
>>> installation to disable ntp on the containers...But I was trying to
>>> figure out a foolproof way of looking on the machine and determining
>>> if it is a container or not. The only thing I have found so far is
>>> that /proc/mtrr exists on the physical servers, but not on the
>>> containers. Is this a viable way to make this determination or is
>>> there a better way?
>>>
>>> Thanks,
>>> --b
>>> _______________________________________________
>>> Users mailing list
>>> Users at openvz.org
>>> https://openvz.org/mailman/listinfo/users
>>
>>
>>
>>
>> --
>>
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>
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