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

[Martin Dobrev]

Better way to do it is to look for /proc/user_beancounters. If it exists then it's a distro with OpenVZ kernel installation. In it there is a info about different parameters of the container (if you look into it inside the container) or containers (if checked from the HN). Container 0: is the HN, so if you have it listed in the file then you run outside of the container.

Martin Dobrev

Sent from iPhone 4

On 14.04.2012, at 01:24, 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
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