[Lxc-users] Viewing a container's /proc mount from the host

[Stéphane Graber]

On 12-09-06 04:55 PM, Ken Elkabany wrote:
> Hi,
> 
> We're trying to find the ports that a container is currently listening
> on. This information is available from /proc/net/tcp and /proc/net/udp.
> However, as far as I can tell, the host cannot view a container's /proc
> mount due to namespacing. We would prefer to view those files from the
> host, rather than connecting to the container's tty, and viewing it from
> within the container.
> 
> As an aside, we do not want to use port scanning.
> 
> Best,
> Ken

The net entries can be accessed using /proc/<pid on host>/net/{udp|tcp},
no need to actual access the /proc of the container.

lxc-netstat -n <container> may also help you get what you want.


-- 
Stéphane Graber
Ubuntu developer
http://www.ubuntu.com

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