[lxc-users] Cannot start network: Failed to attach

[Jochen Wiedmann]

Hi,

this mailing list seems to be appropriate for beginners questions like
the following. Hope, that's the case.

I am running a CentOS 6.7 VM on VirtualBox with LXC 1.0.8 installed
from the EPEL repository. I am creating an LXC container, but cannot
start it, because some problems with the network (see below). Most
likely, my network configuration is not correct. ifconfig shows three
interfaces to be present ("eth0", "eth1", and "lo").

What might be wrong? Or, what to try next?

Thanks,

Jochen

[jwi at lxc ~]$ sudo cat /etc/lxc/lxc-usernet
jwi eth0 lxcbr0 10
jwi at lxc ~]$ sudo rm -rf /var/lib/lxc/centos6/
[sudo] password for jwi:
[jwi at lxc ~]$ sudo lxc-create -t download -n centos6 -- -d centos -r 6 -a amd64
Using image from local cache
Unpacking the rootfs

---
You just created a CentOS container (release=6, arch=amd64, variant=default)

To enable sshd, run: yum install openssh-server

For security reason, container images ship without user accounts
and without a root password.

Use lxc-attach or chroot directly into the rootfs to set a root password
or create user accounts.
[jwi at lxc ~]$ sudo lxc-start -n centos6
lxc-start: conf.c: instantiate_veth: 3105 failed to attach
'veth47FB4Q' to the bridge 'virbr0': No such device
lxc-start: conf.c: lxc_create_network: 3388 failed to create netdev
lxc-start: start.c: lxc_spawn: 841 failed to create the network
lxc-start: start.c: __lxc_start: 1100 failed to spawn 'centos6'
lxc-start: lxc_start.c: main: 341 The container failed to start.
lxc-start: lxc_start.c: main: 345 Additional information can be
obtained by setting the --logfile and --logpriority options.

-- 
The next time you hear: "Don't reinvent the wheel!"

http://www.keystonedevelopment.co.uk/wp-content/uploads/2014/10/evolution-of-the-wheel-300x85.jpg