[lxc-users] Networking not working in unconfined overlayfs container
Serge Hallyn
serge.hallyn at ubuntu.com
Mon Oct 5 16:49:44 UTC 2015
Quoting Frederico Araujo (araujof at gmail.com):
> Hi,
>
> I've been using LXC for over two years without problems. This week, I
> upgraded my Ubuntu from Trusty to Vivid, and I noticed that my overlayfs
> containers stopped getting IP assigned. In my machine the error can be
> reproduced in this way:
>
> 1. lxc-create -n base -t ubuntu
Do you have this problem if you use the download template?
> 2. Edit ubuntu/config to add lxc.aa_profile = unconfined
interesting that it has to be unconfined.
if you tail -f /var/log/syslog and then start the container, does
the tail -f output show any DENIED messages?
> 3. lxc-clone -s -B overlayfs ubuntu tmp
Does the 'ubuntu' container start ok?
> 4. lxc-start -n tmp -d
> 5. lxc-ls -f shows:
>
> NAME STATE IPV4 IPV6 GROUPS AUTOSTART
> -----------------------------------------------------------------------
> tmp RUNNING - *(no IP)* - - NO
> ubuntu STOPPED - - - NO
Are you able to lxc-attach -n tmp and look around? what does 'ps -ef'
and 'ifconfig -a' show?
> Interestingly, I don't run into this issue when running the container in
> confined mode (without lxc.aa_profile = unconfined). I checked past threads
> in this list and in launchpad, and noticed that some people had problems
> with overlayfs when upgrading to vivid, but it seems that these problems
> were fixed in LXC 1.1 release. I'm running on LXC 1.1.2.
>
> Any thoughts?
>
> Thanks,
> Fred
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