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Host FQDN and Hypervisor hostname perceived by libvirt are different on ubuntu22.04 multipass virsh

Bug #2030349 reported by JamesLin
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This bug affects 4 people
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Bug Description

On host machine(ubuntu22.04)

```
$ multipass get local.driver
libvirt

$ multipass --version
multipass 1.12.2

$ virsh --version
8.0.0

# Use this line to create vm
$ multipass launch -c 4 -m 16G -d 50G https://cloud-images.ubuntu.com/jammy/current/jammy-server-cloudimg-amd64.img -vvvv -n sunbeam
```

Inside multipass sunbeam

```
$ sunbeam cluster bootstrap --accept-defaults
Error: Host FQDN and Hypervisor hostname perceived by libvirt are different, check `hostname -f` and `/etc/hosts` file

$ ip -c a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host
       valid_lft forever preferred_lft forever
2: ens3: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP group default qlen 1000
    link/ether 52:54:00:79:8b:41 brd ff:ff:ff:ff:ff:ff
    altname enp0s3
    inet 10.78.137.122/24 metric 100 brd 10.78.137.255 scope global dynamic ens3
       valid_lft 3138sec preferred_lft 3138sec
    inet6 fe80::5054:ff:fe79:8b41/64 scope link
       valid_lft forever preferred_lft forever

$ cat /etc/hosts
# Your system has configured 'manage_etc_hosts' as True.
# As a result, if you wish for changes to this file to persist
# then you will need to either
# a.) make changes to the master file in /etc/cloud/templates/hosts.debian.tmpl
# b.) change or remove the value of 'manage_etc_hosts' in
# /etc/cloud/cloud.cfg or cloud-config from user-data
#
127.0.1.1 sunbeam sunbeam
127.0.0.1 localhost

# The following lines are desirable for IPv6 capable hosts
::1 localhost ip6-localhost ip6-loopback
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters

$ hostname -f
sunbeam
```

Debug

```
>>> from sunbeam import utils
>>> utils.get_hypervisor_hostname()
'sunbeam'
>>> utils.get_fqdn()
'sunbeam.multipass'
>>> utils.get_local_ip_by_default_route()
'10.78.137.122'

>>> socket.gethostbyaddr("127.0.1.1")
('sunbeam', ['sunbeam'], ['127.0.1.1'])
>>> socket.gethostbyaddr("127.0.0.1")
('localhost', [], ['127.0.0.1'])
>>> socket.gethostbyaddr("10.78.137.122")
('sunbeam.multipass', [], ['10.78.137.122'])
```

See original description
JamesLin (jneo8)
description: updated
Revision history for this message
ERDEM AĞBAHCA (aerdow) wrote :

@JamesLin

I encountered the same problem. When you change the hostname to something else and re run "sunbeam cluster bootstrap --accept-defaults" it works. Surely this is not an explanation to the bug but it can be assumed as a workaround.

For example:
cat /etc/hostname is: oldone
hostname -f output is: oldone.oldopenstacknetwork

Revision history for this message
JamesLin (jneo8) wrote (last edit ):

Hi @aerdow

What I expect is the smoothly user experience between multipass and sunbeam integrate together, so I don't need to provide any workaround. But still thanks for your work around solution.

Revision history for this message
philippe (philhay) wrote :
Download full text (6.6 KiB)

Hello All,

I have same problem, appears each time.

I made a fresh install from kubuntu 22.04 LTS. Twice, one with docker and git install first, second one directly following install process of microstack describe here https://microstack.run/?_ga=2.213454557.874672970.1693812924-1742046544.1693812924#get-started.

workaround from Erdem does not work.

Hypervisor hostname perceived by libvirt should be displayed to have a useful error message ...

Full steps and traces

phil@phil-dell:~$ sudo snap install multipass
[sudo] password for phil:
multipass 1.12.2 from Canonical✓ installed
phil@phil-dell:~$ multipass launch --name microstack --cpus 4 --memory 16G --disk 50G && multipass shell microstack
Launched: microstack
Welcome to Ubuntu 22.04.3 LTS (GNU/Linux 5.15.0-83-generic x86_64)

 * Documentation: https://help.ubuntu.com
 * Management: https://landscape.canonical.com
 * Support: https://ubuntu.com/advantage

  System information as of Sat Sep 16 07:59:50 UTC 2023

  System load: 0.4677734375 Processes: 138
  Usage of /: 2.9% of 48.27GB Users logged in: 0
  Memory usage: 1% IPv4 address for ens3: 10.158.141.207
  Swap usage: 0%

Expanded Security Maintenance for Applications is not enabled.

0 updates can be applied immediately.

Enable ESM Apps to receive additional future security updates.
See https://ubuntu.com/esm or run: sudo pro status

To run a command as administrator (user "root"), use "sudo <command>".
See "man sudo_root" for details.
ubuntu@microstack:~$ sudo snap install openstack
openstack (2023.1/stable) 2023.1 from Canonical✓ installed

ubuntu@microstack:~$ sudo snap install openstack
openstack (2023.1/stable) 2023.1 from Canonical✓ installed
ubuntu@microstack:~$ sunbeam prepare-node-script | bash -x && newgrp snap_daemon
++ lsb_release -sc
+ '[' jammy '!=' jammy ']'
++ whoami
+ USER=ubuntu
+ SUDO_ASKPASS=/bin/false
+ sudo -A whoami
+ sudo grep -r ubuntu /etc/sudoers /etc/sudoers.d
+ grep NOPASSWD:ALL
+ dpkg -s openssh-server
+ echo 'fs.inotify.max_user_instances = 1024'
+ sudo tee /etc/sysctl.d/80-sunbeam.conf
fs.inotify.max_user_instances = 1024
+ sudo sysctl -q -p /etc/sysctl.d/80-sunbeam.conf
+ sudo snap connect openstack:ssh-keys
+ sudo addgroup ubuntu snap_daemon
Adding user `ubuntu' to group `snap_daemon' ...
Adding user ubuntu to group snap_daemon
Done.
+ newgrp snap_daemon
Generating public/private rsa key pair.
Your identification has been saved in /home/ubuntu/.ssh/id_rsa
Your public key has been saved in /home/ubuntu/.ssh/id_rsa.pub
The key fingerprint is:
SHA256:QQDHfeM0hFuJYDqM8b6/j4kju8s0a0QJ28q+QiV+21c ubuntu@microstack
The keys randomart image is:
+---[RSA 4096]----+
| . .o=+.+.. |
|. = +..+ B |
| +..= .* o |
|..+o . ... |
|ooo . S |
|.+.. . E |
|o.+ + . |
|.+o+.+ + |
|.oB=..*o. |
 +----[SHA256]-----+
# 10.158.141.207:22 SSH-2.0-OpenSSH_8.9p1 Ubuntu-3ubuntu0.3
# 10.158.141.207:22 SSH-2.0-OpenSSH_8.9p1 Ubuntu-3ubuntu0.3
# 10.158.141.207:22 SSH-2.0-OpenSSH_8.9p1 Ubuntu-3ubuntu0.3
# 10.158.141.207:22 SSH-2.0-OpenSSH_8.9p1 Ubuntu-3ubuntu0.3
# 10.158.141.207:22 SSH-2.0-OpenSSH_8...

Read more...

Revision history for this message
Brian (bsinger98) wrote :

I also have the same issue as above both using multipass and on bare-metal.

Revision history for this message
Marian Gasparovic (marosg) wrote :

I can see this with 2023.1/stable in mutlipass.

For what it's worth when I added my IP to /etc/hosts I don't get the error

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