ubuntu@node03:~$ systemd-resolve --status --no-pager
Global
DNSSEC NTA: 10.in-addr.arpa
16.172.in-addr.arpa
168.192.in-addr.arpa
17.172.in-addr.arpa
18.172.in-addr.arpa
19.172.in-addr.arpa
20.172.in-addr.arpa
21.172.in-addr.arpa
22.172.in-addr.arpa
23.172.in-addr.arpa
24.172.in-addr.arpa
25.172.in-addr.arpa
26.172.in-addr.arpa
27.172.in-addr.arpa
28.172.in-addr.arpa
29.172.in-addr.arpa
30.172.in-addr.arpa
31.172.in-addr.arpa
corp
d.f.ip6.arpa
home
internal
intranet
lan
local
private
test
Link 3 (br0)
Current Scopes: LLMNR/IPv4 LLMNR/IPv6
LLMNR setting: yes
MulticastDNS setting: no
DNSSEC setting: no
DNSSEC supported: no
Link 2 (enp0s25)
Current Scopes: none
LLMNR setting: yes
MulticastDNS setting: no
DNSSEC setting: no
DNSSEC supported: no
DNS Servers: 10.90.90.1
DNS Domain: maaslab
maas
** Description changed:
When deploying Bionic, /etc/resolv.conf is not configured correctly,
which leads to no DNS resolution. In the output below, you will see that
netplan config is correctly to the 10.90.90.1 nameserver, but in
resolv.conf that's a local address.
Resolv.conf should really be configured to use the provided DNS
- server(s)
+ server(s). That said, despite that fact, DNS resolution doesn't work
+ with the local address.
Bionic
------
ubuntu@node01:~$ cat /etc/netplan/50-cloud-init.yaml
# This file is generated from information provided by
# the datasource. Changes to it will not persist across an instance.
# To disable cloud-init's network configuration capabilities, write a file
# /etc/cloud/cloud.cfg.d/99-disable-network-config.cfg with the following:
# network: {config: disabled}
network:
version: 2
ethernets:
enp0s25:
match:
macaddress: b8:ae:ed:7d:17:d2
mtu: 1500
nameservers:
addresses:
- 10.90.90.1
search:
- maaslab
- maas
set-name: enp0s25
bridges:
br0:
addresses:
- 10.90.90.3/24
gateway4: 10.90.90.1
interfaces:
- enp0s25
parameters:
forward-delay: 15
stp: false
ubuntu@node01:~$ cat /etc/resolv.conf
# This file is managed by man:systemd-resolved(8). Do not edit.
#
# 127.0.0.53 is the systemd-resolved stub resolver.
# run "systemd-resolve --status" to see details about the actual nameservers.
nameserver 127.0.0.53
search maaslab maas
ubuntu@node01:~$ ping google.com
ping: google.com: Temporary failure in name resolution
-
[...]
-
ubuntu@node01:~$ sudo vim /etc/resolv.conf
ubuntu@node01:~$ cat /etc/resolv.conf
# This file is managed by man:systemd-resolved(8). Do not edit.
#
# 127.0.0.53 is the systemd-resolved stub resolver.
# run "systemd-resolve --status" to see details about the actual nameservers.
nameserver 10.90.90.1
search maaslab maas
ubuntu@node01:~$ ping google.com
PING google.com (172.217.0.174) 56(84) bytes of data.
64 bytes from mia09s16-in-f14.1e100.net (172.217.0.174): icmp_seq=1 ttl=52
time=4.46 ms
64 bytes from mia09s16-in-f14.1e100.net (172.217.0.174): icmp_seq=2 ttl=52
time=4.38 ms
=============================
Xenial
==============================
ubuntu@node05:~$ cat /etc/network/interfaces.d/50-cloud-init.cfg
# This file is generated from information provided by
# the datasource. Changes to it will not persist across an instance.
# To disable cloud-init's network configuration capabilities, write a file
# /etc/cloud/cloud.cfg.d/99-disable-network-config.cfg with the following:
# network: {config: disabled}
auto lo
iface lo inet loopback
dns-nameservers 10.90.90.1
dns-search maaslab maas
auto enp0s25
iface enp0s25 inet static
address 10.90.90.162/24
gateway 10.90.90.1
mtu 1500
ubuntu@node05:~$ cat /etc/resolv.conf
# Dynamic resolv.conf(5) file for glibc resolver(3) generated by resolvconf(8)
# DO NOT EDIT THIS FILE BY HAND -- YOUR CHANGES WILL BE OVERWRITTEN
nameserver 10.90.90.1
search maaslab maas
--
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Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/1750884
Title:
[2.4, bionic] /etc/resolv.conf not configured correctly in Bionic,
leads to no DNS resolution
To manage notifications about this bug go to:
https://bugs.launchpad.net/cloud-init/+bug/1750884/+subscriptions
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