Comment 3 for bug 2025316

Recently ran into this issue when I decided to try Sunbeam on Ubuntu 22.04 Desktop instead of Ubuntu 22.04 Server. After some analysis it seems that by default after installing the openstack snap and running the prepare-node-script the host can ssh into itself on Ubuntu 22.04 Server, but not with Ubuntu 22.04 Desktop although ~/.ssh/id_rsa.pub is included in ~/.ssh/authorized_keys.

Manually running 'juju bootstrap sunbeam sunbeam-controller' does prompt the user for the password and running 'sunbeam cluster bootstrap' afterwards resolves the issue.

- Reproducer in LXD 5.20

At the time of this writing you'll have to change the url for 'images' to access the ubuntu desktop images (https://discourse.ubuntu.com/t/new-lxd-image-server-available-images-lxd-canonical-com/43824).

lxc remote set-url images https://images.lxd.canonical.com

lxc launch images:ubuntu/jammy/desktop openstack --vm

lxc shell openstack

echo "$(hostname -I) openstack" >> /etc/hosts

sudo snap install openstack --channel 2023.2

su - ubuntu

sunbeam prepare-node-script | bash -x && newgrp snap_daemon

sunbeam cluster bootstrap --accept-defaults

WARNING: Minimum system requirements (4 core CPU, 16 GB RAM) not met.
⠋ Bootstrapping Juju onto machine ...
Error bootstrapping Juju
Traceback (most recent call last):
  File "/snap/openstack/335/lib/python3.10/site-packages/sunbeam/commands/juju.py", line 289, in run
    process = subprocess.run(cmd, capture_output=True, text=True, check=True)
  File "/usr/lib/python3.10/subprocess.py", line 526, in run
    raise CalledProcessError(retcode, process.args,
subprocess.CalledProcessError: Command '['/snap/openstack/335/juju/bin/juju', 'bootstrap', 'sunbeam', 'sunbeam-controller']' returned non-zero exit status 1.
ERROR initializing ubuntu user: subprocess encountered error code 255 (Connection closed by 10.140.44.4 port 22)
ERROR subprocess encountered error code 255 (Connection closed by 10.140.44.4 port 22)

Error: Command '['/snap/openstack/335/juju/bin/juju', 'bootstrap', 'sunbeam', 'sunbeam-controller']' returned non-zero exit status 1.

#Fix
juju bootstrap sunbeam sunbeam-controller

sunbeam cluster bootstrap --accept-defaults

- Reproducer to check if host can ssh into itself.

Server

lxc launch ubuntu:22.04 server --vm
lxc shell server
snap install openstack --channel 2023.2
su - ubuntu
sunbeam prepare-node-script | bash -x && newgrp snap_daemon
ssh ubuntu@$(hostname -I)
#Does not prompt for password

Desktop

lxc launch images:ubuntu/jammy/desktop desktop --vm
lxc shell desktop
snap install openstack --channel 2023.2
su - ubuntu
sunbeam prepare-node-script | bash -x && newgrp snap_daemon
ssh ubuntu@$(hostname -I)
#Prompts for password

Also, manually running the commands line by line from the prepare node script will still prompt for a password. Something in the prepare node script is happening because manually running these commands successfully sets up promptless access.

sudo apt install -y openssh-server
[ -f $HOME/.ssh/id_rsa ] || ssh-keygen -b 4096 -f $HOME/.ssh/id_rsa -t rsa -N ""
cat $HOME/.ssh/id_rsa.pub >> $HOME/.ssh/authorized_keys
ssh-keyscan -H $(hostname --all-ip-addresses) >> $HOME/.ssh/known_hosts