Ubuntu Version:
Ubuntu 24.04.4 LTS (Noble Numbat) Server running on a VM
Problem Description:
Updated from Ubuntu 22.04.5 LTS (Jammy Jellyfish) to Ubuntu 24.04.4 LTS (Noble Numbat) with do-release-upgrade
Now I have a DNS problem. I have search and tried many suggestions but I just can’t get it to work.
I have found the replace /etc/resolv.conf at boot checkbox of my VM supplier which made debugging hard, but now that it is off it still doesn’t work.
What I’ve Tried:
> ping google.com
ping: google.com: Name or service not known
This means apt update also doesn’t work. So please don’t suggest to apt install X/Y, it doesn’t work.
Failed to fetch ``http://archive.ubuntu.com/ubuntu/dists/noble/InRelease`` Could not resolve ‘``archive.ubuntu.com``’
I have tries all the suggestions I could find and below are my config settings.
> /etc/systemd/resolved.conf
[Resolve]
# Some examples of DNS servers which may be used for DNS= and FallbackDNS=:
# Cloudflare: 1.1.1.1#cloudflare-dns.com 1.0.0.1#cloudflare-dns.com 2606:4700:4700::1111#cloudflare-dns.com 2606:4700:4700::1001#cloudflare-dns.com
# Google: 8.8.8.8#dns.google 8.8.4.4#dns.google 2001:4860:4860::8888#dns.google 2001:4860:4860::8844#dns.google
# Quad9: 9.9.9.9#dns.quad9.net 149.112.112.112#dns.quad9.net 2620:fe::fe#dns.quad9.net 2620:fe::9#dns.quad9.net
DNS=9.9.9.9 149.112.112.112 1.1.1.1
FallbackDNS=1.0.0.1
/etc/resolv.conf → ../run/systemd/resolve/resolv.conf is a symbolic link
> cat /etc/resolv.conf
# This is /run/systemd/resolve/resolv.conf managed by man:systemd-resolved(8).
# Do not edit.
#
# <snip>
nameserver 9.9.9.9
nameserver 149.112.112.112
nameserver 1.1.1.1
search .
> cat /etc/resolvconf/resolv.conf.d/base
nameserver 9.9.9.9
nameserver 149.112.112.112
nameserver 1.1.1.1
nameserver 1.0.0.1
> resolvectl status
Global
Protocols: -LLMNR -mDNS -DNSOverTLS DNSSEC=no/unsupported
resolv.conf mode: uplink
Current DNS Server: 9.9.9.9
DNS Servers: 9.9.9.9 149.112.112.112 1.1.1.1
Fallback DNS Servers: 1.0.0.1
Link 2 (venet0)
Current Scopes: none
Protocols: -DefaultRoute -LLMNR -mDNS -DNSOverTLS DNSSEC=no/unsupported
> ls -la /etc/netplan/
total 16
drwxr-xr-x 2 root root 4096 Apr 1 17:13 .
drwxr-xr-x 123 root root 12288 Apr 1 17:13 ..
Empty? Is this relevant and if yes how to get the right config files?
> netplan status
Unknown device type: void
Unknown device type: void
Unknown device type: void
Unknown device type: void
Unknown device type: void
Online state: offline
DNS Addresses: 9.9.9.9 (compat)
149.112.112.112 (compat)
1.1.1.1 (compat)
DNS Search: .
● 1: lo ethernet UNKNOWN/UP (unmanaged)
MAC Address: 00:00:00:00:00:00
Addresses: 127.0.0.1/8
::1/128
● 2: venet0 other UNKNOWN/UP (unmanaged)
Addresses: 127.0.0.1/32
X.X.X.X/32
Routes: default (boot, link)
Netplan status offline?
> cat /etc/network/interfaces
# This configuration file is auto-generated.
# WARNING: Do not edit this file, otherwise your changes will be lost.
# Please edit template /etc/network/interfaces.template instead.
auto lo
iface lo inet loopback
# Auto generated venet0 interfaces
auto venet0
iface venet0 inet static
address 127.0.0.1
netmask 255.255.255.255
broadcast 0.0.0.0
up route add default dev venet0
auto venet0:0
iface venet0:0 inet static
address X.X.X.X
netmask 255.255.255.255
Adding dns-nameservers 9.9.9.9 149.112.112.112 has no effect.
> systemctl status systemd-resolved
● systemd-resolved.service - Network Name Resolution
Loaded: loaded (/usr/lib/systemd/system/systemd-resolved.service; enabled; preset: enabled)
Active: active (running)
> systemctl status systemd-networkd
● systemd-networkd.service - Network Configuration
Loaded: loaded (/usr/lib/systemd/system/systemd-networkd.service; enabled; preset: enabled)
Active: active (running)
> systemctl status NetworkManager
○ NetworkManager.service - Network Manager
Loaded: loaded (/usr/lib/systemd/system/NetworkManager.service; enabled; preset: enabled)
Active: inactive (dead)
systemctl start NetworkManager has no effect.
> ping -c 3 google.com
ping: google.com: Name or service not known
> ping -c 3 9.9.9.9
PING 9.9.9.9 (9.9.9.9) 56(84) bytes of data.
64 bytes from 9.9.9.9: icmp_seq=1 ttl=55 time=10.0 ms
64 bytes from 9.9.9.9: icmp_seq=2 ttl=55 time=10.1 ms
64 bytes from 9.9.9.9: icmp_seq=3 ttl=55 time=10.0 ms
--- 9.9.9.9 ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2002ms
rtt min/avg/max/mdev = 10.002/10.030/10.056/0.022 ms
I’m lost.
Any suggestions?
Before Posting:
Please check if similar issues have already been reported and resolved.
I have checked many issues but in my case it seams that al the relevant config file have the right nameserver 9.9.9.9
I must be missing something.
