MAAS is sending a "global" nameserver, and a ethernet device on a bridge.
cloud-init is rendering that nameserver onto the ethernet device rather
than on the bridge or as a "global" entry.
$ cat my.yaml
network:
config: [
{"id": "enp0s25", "type": "physical", "name": "enp0s25",
"mac_address": "b8:ae:ed:7d:16:d0", "mtu": 1500,
"subnets": [{"type": "manual"}]},
{"id": "br0", "type": "bridge", "name": "br0",
"mac_address": "b8:ae:ed:7d:16:d0", "bridge_interfaces": ["enp0s25"],
"mtu": 1500, "params": {'bridge_fd': 15, 'bridge_stp': 0},
"subnets": [
{"type": "static", "address": "10.90.90.4/24", "dns_nameservers": [],
"gateway": "10.90.90.1"}
]},
{"type": "nameserver", "address": ["10.90.90.1"],
"search": ["maaslab", "maas"]},
]
version: 1
$ PYTHONPATH=$PWD python3 ./tools/net-convert.py \
--network-data=my.yaml --kind=yaml --output-kind=netplan --directory=out.d
$ cat out.d/etc/netplan/50-cloud-init.yaml
network:
version: 2
ethernets:
enp0s25:
match:
macaddress: b8:ae:ed:7d:16:d0
mtu: 1500
nameservers:
addresses:
- 10.90.90.1
search:
- maaslab
- maas
set-name: enp0s25
bridges:
br0:
addresses:
- 10.90.90.4/24
gateway4: 10.90.90.1
interfaces:
- enp0s25
parameters:
forward-delay: 15
stp: false
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https://bugs.launchpad.net/bugs/1750884
Title:
[2.4, bionic] /etc/resolv.conf not configured correctly in Bionic,
leads to no DNS resolution
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https://bugs.launchpad.net/cloud-init/+bug/1750884/+subscriptions
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