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I've set up Juju running in LXC, and I'm attempting to expose it to the internal network. I'm generally following this question to point lxc to my existing bridge (eth-br0).

I've edited /etc/default/lxc and /etc/lxc/default.conf as per the post, but when I try to bootstrap I get:

2013-09-26 19:47:05 INFO juju.provider.local environprovider.go:32 opening environment "local"
2013-09-26 19:47:05 ERROR juju.utils network.go:37 cannot find network interface "lxcbr0": net: no such interface
2013-09-26 19:47:05 ERROR juju.provider.local environprovider.go:48 failure setting config: net: no such interface
2013-09-26 19:47:05 ERROR juju supercommand.go:282 command failed: net: no such interface
error: net: no such interface

Obviously something is still trying to point to lxcbr0 rather than the existing bridge. If I just want to expose a lxc juju to the network, is this the best way to do it and how should I configure it properly.

I can attach my ifconfig if necessary.

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2 Answers 2

You are right something is trying to point lxcbr0.

Use lxcbr0 in these files

  1. /etc/default/lxc
  2. /etc/lxc/default.conf
  3. /etc/network/interfaces

I tried br0 it give me the same error. After changing existing bridge to lxcbr0 that I worked fine.

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While thats true that using the default works, my original question is how do I change the bridge to something else. I have an existing bridge on a NIC that I need to point LXC to. –  user187595 Oct 11 '13 at 21:46

The latest version of juju includes an option in the environments yaml for specifying the network bridge:

# network-bridge holds the name of the LXC network bridge to use.
# Override if the default LXC network bridge is different.
network-bridge: br0

Hope this helps?

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What version supports network-bridge option ? can you specify ? –  user1868 Oct 26 at 15:14

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