Juju fails to launch containers when netplan includes bridge configuration

[Craig Bender]

Juju 2.4-beta2-bionic-amd64

br1 is maas configured bridge (bridge works fine from deployed machine standpoint

Rendered netplan yaml attached

Result of model when bridge has paramaters

        started 172.27.21.225 gm3b6t bionic default Deployed
0/lxd/0 down pending bionic bridge activation error: yaml: unmarshal errors:
  line 29: field parameters not found in struct netplan.Bridge
0/lxd/1 down pending bionic bridge activation error: yaml: unmarshal errors:
  line 29: field parameters not found in struct netplan.Bridge
0/lxd/2 down pending bionic bridge activation error: yaml: unmarshal errors:
  line 29: field parameters not found in struct netplan.Bridge
0/lxd/3 down pending bionic bridge activation error: yaml: unmarshal errors:
  line 29: field parameters not found in struct netplan.Bridge
1 started 172.27.21.226 qmmrxt bionic default Deployed
1/lxd/0 down pending bionic bridge activation error: yaml: unmarshal errors:
  line 29: field parameters not found in struct netplan.Bridge
1/lxd/1 down pending bionic bridge activation error: yaml: unmarshal errors:
  line 29: field parameters not found in struct netplan.Bridge
1/lxd/2 down pending bionic bridge activation error: yaml: unmarshal errors:
  line 29: field parameters not found in struct netplan.Bridge
1/lxd/3 down pending bionic bridge activation error: yaml: unmarshal errors:
  line 29: field parameters not found in struct netplan.Bridge
2 started 172.27.21.227 tpywwx bionic default Deployed
2/lxd/0 down pending bionic bridge activation error: yaml: unmarshal errors:
  line 29: field parameters not found in struct netplan.Bridge
2/lxd/1 down pending bionic bridge activation error: yaml: unmarshal errors:
  line 29: field parameters not found in struct netplan.Bridge
2/lxd/2 down pending bionic bridge activation error: yaml: unmarshal errors:
  line 29: field parameters not found in struct netplan.Bridge
2/lxd/3 down pending bionic bridge activation error: yaml: unmarshal errors:
  line 29: field parameters not found in struct netplan.Bridge
3 started 172.27.21.228 mgnayy bionic default Deployed
3/lxd/0 down pending bionic bridge activation error: yaml: unmarshal errors:
  line 29: field parameters not found in struct netplan.Bridge
3/lxd/1 down pending bionic bridge activation error: yaml: unmarshal errors:
  line 29: field parameters not found in struct netplan.Bridge
3/lxd/2 down pending bionic bridge activation error: yaml: unmarshal errors:
  line 29: field parameters not found in struct netplan.Bridge
4 started 172.27.21.231 phpkbm bionic default Deployed
5 started 172.27.21.230 nwnkwr bionic default Deployed
6 started 172.27.21.229 yemrsf bionic default Deployed

[John A Meinel (jameinel)]

The issue is not the bridges as much as the "parameters" struct as attributes of the bridge.

I have a patch that is adding the extra fields that we didn't support. *right now* it doesn't yet handle Bridge Parameters, but I'll add that today as part of that patch:
https://github.com/juju/juju/pull/8697

[John A Meinel (jameinel)]

watch this space: https://github.com/juju/juju/pull/8697/files#diff-17a57903781b0de481f367373199581cR69

[John A Meinel (jameinel)]

https://github.com/juju/juju/pull/8697

[John A Meinel (jameinel)]

https://github.com/juju/juju/pull/8708 brings those changes into develop