[Lxc-users] retrieve guest container's ip address

[Alan McDuff]

Great, thank you, Marko. I had read the thread, but first it didn't make sense to me. From Stephanes last reply I found that this is all I need:

user at host:~$ host guest1 10.0.3.1

Using domain server:
Name: 10.0.3.1
Address: 10.0.3.1#53
Aliases:
guest0 has address 10.0.3.123

I have one more question (not urgent, but making this work would be nice-to-have):
Connecting using the hostname fails:

>user at host:~$ ssh ubuntu at guest1
>ssh: Could not resolve hostname guest1: Name or service not known
Can you suggest what needs to be configured to make this work?

Thank you
Alan


________________________________
 From: Marko Anastasov <marko.anastasov at gmail.com>
To: Alan McDuff <alan.mcduff at yahoo.com> 
Cc: "lxc-users at lists.sourceforge.net" <lxc-users at lists.sourceforge.net> 
Sent: Saturday, January 5, 2013 12:27 PM
Subject: Re: [Lxc-users] retrieve guest container's ip address
 

On Sat, Jan 5, 2013 at 12:21 PM, Alan McDuff <alan.mcduff at yahoo.com> wrote:

Hello,
>since Ubuntu 12.04 made it very simple to create a lxc guest, I was able to start experimenting with lxc.
>I create and run the container using:
>
>
>lxc-create -t ubuntu -n guest1
>lxc-start -n guest1 -d
>
>
>But how do I get the ip address of the guest, which I think is assigned by a dhcp server running on the host? I need to automate this to work in a shell script.
>
>
>Running "lxc-start -n guest1" without daemon mode and then typing "ifconfig" inside the container is no option, because this works only interactively.
>Running "lxc-execute -n guest1 ifconfig" doesn't show the address, because the network seems not to be set up with lxc-execute, and lxc-execute can only execute in a stopped container.
>Scanning the guest network using nmap for open ssh ports works, but is slow and needs trial and error to find the correct guest if more than one are runnign in the scanned range.
>
>
>Is there something like an "lxc-ifconfig" command?
>Also, instructions would help that explain how to login using the hostname ("ssh ubuntu at guest1"). But I would need instructions that work specifically with ubuntu 12.04. I found numerous tips for lxc under debian, but I can't figure out how to make them work for ubuntu.
>
>
>

Hi Alan,

Check out the thread that I've started recently, I had very similar questions.

Marko
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