Comment 16 for bug 2074309

I just want to update on my upgrade test.

First and foremost - a direct upgrade from Jammy to Noble is not possible.

It only is if you have it installed and have not used rabbitmq-server, thus no metadata is made yet.

If you use the server in Jammy and then attempt to upgrade to Noble right now you will see:

Errors were encountered while processing:
 rabbitmq-server
needrestart is being skipped since dpkg has failed
packages have been installed but needrestart is suspended
packages have been installed but needrestart is suspended
Exception during pm.DoInstall(): E:Sub-process /usr/bin/dpkg returned an error code (1)
Setting up rabbitmq-server (3.12.1-1ubuntu1) ...
Job for rabbitmq-server.service failed because the control process exited with error code.
See "systemctl status rabbitmq-server.service" and "journalctl -xeu rabbitmq-server.service" for details.
invoke-rc.d: initscript rabbitmq-server, action "restart" failed.
● rabbitmq-server.service - RabbitMQ Messaging Server
     Loaded: loaded (/usr/lib/systemd/system/rabbitmq-server.service; enabled; preset: enabled)
     Active: activating (auto-restart) (Result: exit-code) since Fri 2024-08-09 18:08:11 UTC; 7ms ago
    Process: 34558 ExecStart=/usr/lib/rabbitmq/bin/rabbitmq-server (code=exited, status=1/FAILURE)
   Main PID: 34558 (code=exited, status=1/FAILURE)
     Status: "Standing by"
        CPU: 1.631s
invoke-rc.d: release upgrade in progress, error is not fatal
root@j-n-upgrade2:~# lsb_Release -a
Command 'lsb_Release' not found, did you mean:
  command 'lsb_release' from deb lsb-release (12.0-2)
Try: apt install <deb name>
root@j-n-upgrade2:~# lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 24.04 LTS
Release: 24.04
Codename: noble
root@j-n-upgrade2:~# systemctl status rabbitmq-server
● rabbitmq-server.service - RabbitMQ Messaging Server
     Loaded: loaded (/usr/lib/systemd/system/rabbitmq-server.service; enabled; preset: enabled)
     Active: activating (auto-restart) (Result: exit-code) since Fri 2024-08-09 18:12:26 UTC; 7s ago
    Process: 36160 ExecStart=/usr/lib/rabbitmq/bin/rabbitmq-server (code=exited, status=1/FAILURE)
   Main PID: 36160 (code=exited, status=1/FAILURE)
     Status: "Standing by"
        CPU: 1.566s