Public bug reported:
I configured a container as follows, using some bridges (virbr0 and
virbr1, my NAT network and test network, respectively) that I had
previously configured in libvirt:
lxc init ubuntu-daily:b bionic-maas2 -p '' -s default
lxc network attach virbr0 bionic-maas2 eth0 eth0
lxc network attach virbr1 bionic-maas2 eth1 eth1
lxc config set bionic-maas2 user.network-config "version: 2
ethernets:
eth0:
match:
name: eth0
dhcp4: true
eth1:
match:
name: eth1
bridges:
br0:
interfaces: [eth1]
"
lxc start bionic-maas2
lxc exec bionic-maas2 bash
After executing the shell, I noticed that the bridge interface I
specified had been created, but not brought online:
# ip link
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN mode
DEFAULT group default qlen 1000
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
2: br0: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN mode DEFAULT group
default qlen 1000
link/ether c6:0d:b9:b9:68:44 brd ff:ff:ff:ff:ff:ff
32: eth0@if33: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state
UP mode DEFAULT group default qlen 1000
link/ether 00:16:3e:2d:b9:df brd ff:ff:ff:ff:ff:ff link-netnsid 0
34: eth1@if35: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue master
br0 state UP mode DEFAULT group default qlen 1000
link/ether 00:16:3e:ef:4a:5b brd ff:ff:ff:ff:ff:ff link-netnsid 0
# networkctl
IDX LINK TYPE OPERATIONAL SETUP
1 lo loopback carrier unmanaged
2 br0 ether off unmanaged
32 eth0 ether routable configured
34 eth1 ether carrier configured
To work around the issue, I had to manually set the link up:
# ip link set dev br0 up
# networkctl
IDX LINK TYPE OPERATIONAL SETUP
1 lo loopback carrier unmanaged
2 br0 ether degraded unmanaged
32 eth0 ether routable configured
34 eth1 ether carrier configured
4 links listed.
It doesn't really seem useful for netplan to configure a 'bridge
interface but not set it to come online.
ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: cloud-init 17.2-30-gf7deaf15-0ubuntu1
ProcVersionSignature: Ubuntu 4.13.0-32.35-generic 4.13.13
Uname: Linux 4.13.0-32-generic x86_64
ApportVersion: 2.20.8-0ubuntu8
Architecture: amd64
Date: Fri Feb 9 01:29:50 2018
PackageArchitecture: all
ProcEnviron:
TERM=xterm-256color
PATH=(custom, no user)
LANG=C.UTF-8
SourcePackage: cloud-init
UpgradeStatus: No upgrade log present (probably fresh install)
user_data.txt:
#cloud-config
{}
** Affects: netplan
Importance: Undecided
Status: New
** Affects: cloud-init (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug bionic uec-images
** Also affects: netplan
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1748332
Title:
Bridges fail to come online when configured via LXD, netplan, and
cloud-init
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