[Bug 1964642] Re: Packer virtualbox ssh can't connect to unattended Ubuntu 20.04.1/2/3/4 but can connect to Ubuntu 20.4

[Paride Legovini]

Hello Barto,

If I understand it correctly you can create working images using 20.04
ISOs *right now*, but with the exact same tooling images created with
20.04.x ISOs do not work. I think you have been clear about this, but it
is of course very important to know that the only moving part is the ISO
image.

Given that you have console access to the machine, at least for a few
minutes before Virtualbox tears it down, can you please share the output
of the following commands?

 - ip addr
 - systemctl status
 - systemctl status ssh

My wild guess here is that for some reason the 20.04.x images get a
different Ethernet interface name (you hardcoded ens33 in cloud-config).

Also: can you login from the machine to itself (ssh mclibre at 127.0.0.1)?

Also: can you share the contents of /etc/dhcp/dhclient.conf and
/etc/netplan/00-installer-config.yaml?

Thank you.

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https://bugs.launchpad.net/bugs/1964642

Title:
  Packer virtualbox ssh can't connect to unattended Ubuntu 20.04.1/2/3/4
  but can connect to Ubuntu 20.4

Status in openssh package in Ubuntu:
  New

Bug description:
  Two years ago I was able to create a Virtualbox Ubuntu 20.04 guest in a Windows 10 host with Packer 1.5.6, using an unattended installation.
  The Packer command was:
        "boot_command": [
          "<enter><enter><f6><esc><wait> ",
          "autoinstall ds=nocloud-net;s=http://{{ .HTTPIP }}:{{ .HTTPPort }}/",
          "<enter>"
        ],
  The user-data file was:
  #cloud-config
  autoinstall:
    version: 1
    identity:
      realname: mclibre
      hostname: ubuntu
      password: '$6$mclibre$YiuRPSZM3ZXVe4UyIqv1dvy9rUjf5/LsGCkDyaex.WN45wzVTuRmW5QLuctuicGAFZIO2M3QR8NLdtQYatKTn1'
      username: mclibre
    locale: es_ES.UTF-8
    keyboard:
      layout: es
    network:
      network:
        version: 2
        ethernets:
          ens33: {dhcp4: true, dhcp-identifier: mac}
    ssh:
      install-server: true
    late-commands:
      - sed -i 's/^#*\(send dhcp-client-identifier\).*$/\1 = hardware;/' /target/etc/dhcp/dhclient.conf
      - 'sed -i "s/dhcp4: true/&\n      dhcp-identifier: mac/" /target/etc/netplan/00-installer-config.yaml'
  Now, I have tried to create a Virtualbox Ubuntu 20.04.4/.3/.2/.1 guest using packer 1.5.6 but Packer can't create the image because once the installation is done, after rebooting the SSH server does not answer (the packer log error says: SSH handshake err: Timeout during SSH handshake).
  I have tried with the last version of Packer, Packer 1.8.0, and the result is the same. I can create a Ubuntu Server 20.4 image but not a Ubuntu Server 20.4.1, .2, .3 or .4 image.
  I can provide as much aditional information as you want.
  Thanking you in advance,
  Bartolome Sintes

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