Upgrade from Alma Linux 9 to Alma Linux 10 via 'leap upgrade' in LXC-Container. Is this possible?

Support
1

Hi there!

I’ve set up an Alma Linux 9 LXC-Container on my Proxmox-Host and I wanna upgrade it via ‘leap upgrade’ (as it’s discribed here )…

When I try an 'leap upgrade inside my LXC-Container I get the following error:

[root@nfs-server ~]# leapp upgrade
==> Processing phase `configuration_phase`
====> * ipu_workflow_config
        IPU workflow config actor
==> Processing phase `FactsCollection`
====> * vendor_repositories_mapping
        Scan the vendor repository mapping files and provide the data to other actors.
====> * system_facts
        Provides data about many facts from system.
Process Process-185:
Traceback (most recent call last):
  File "/usr/lib64/python3.9/multiprocessing/process.py", line 315, in _bootstrap
    self.run()
  File "/usr/lib64/python3.9/multiprocessing/process.py", line 108, in run
    self._target(*self._args, **self._kwargs)
  File "/usr/lib/python3.9/site-packages/leapp/repository/actor_definition.py", line 75, in _do_run
    actor_instance.run(*args, **kwargs)
  File "/usr/lib/python3.9/site-packages/leapp/actors/__init__.py", line 319, in run
    self.process(*args)
  File "/etc/leapp/repos.d/system_upgrade/common/actors/systemfacts/actor.py", line 65, in process
    bios_grubcfg_details = systemfacts.get_bios_grubcfg_details()
  File "/etc/leapp/repos.d/system_upgrade/common/actors/systemfacts/libraries/systemfacts.py", line 363, in get_bios_grubcfg_details
    with open('/boot/grub2/grub.cfg') as fo:
FileNotFoundError: [Errno 2] No such file or directory: '/boot/grub2/grub.cfg'
2025-09-09 20:35:15.142 ERROR    PID: 937 leapp.workflow.FactsCollection: Actor system_facts has crashed: Traceback (most recent call last):
  File "/usr/lib/python3.9/site-packages/leapp/repository/actor_definition.py", line 75, in _do_run
    actor_instance.run(*args, **kwargs)
  File "/usr/lib/python3.9/site-packages/leapp/actors/__init__.py", line 319, in run
    self.process(*args)
  File "/etc/leapp/repos.d/system_upgrade/common/actors/systemfacts/actor.py", line 65, in process
    bios_grubcfg_details = systemfacts.get_bios_grubcfg_details()
  File "/etc/leapp/repos.d/system_upgrade/common/actors/systemfacts/libraries/systemfacts.py", line 363, in get_bios_grubcfg_details
    with open('/boot/grub2/grub.cfg') as fo:
FileNotFoundError: [Errno 2] No such file or directory: '/boot/grub2/grub.cfg'



=============================================================================================
Actor system_facts unexpectedly terminated with exit code: 1 - Please check the above details
=============================================================================================

Debug output written to /var/log/leapp/leapp-upgrade.log

============================================================
                      REPORT OVERVIEW
============================================================

Upgrade has been inhibited due to the following problems:
    1. File "/etc/default/grub" does not exist!

Reports summary:
    Errors:                      1
    Inhibitors:                  1
    HIGH severity reports:       0
    MEDIUM severity reports:     0
    LOW severity reports:        0
    INFO severity reports:       0

Before continuing, review the full report below for details about discovered problems and possible remediation instructions:
    A report has been generated at /var/log/leapp/leapp-report.txt
    A report has been generated at /var/log/leapp/leapp-report.json

============================================================
                   END OF REPORT OVERVIEW
============================================================

Answerfile has been generated at /var/log/leapp/answerfile
[root@nfs-server ~]#

Is there a possibility to Upgrade from Alma Linux 9 to Alma Linux 10?

2

Hello.

In conclusion, containers (such as LXC) are likely excluded from leapp upgrades.
Errors related to /boot and grub are evidence of this.
Furthermore, containers are not mentioned in the Wiki.

As a workaround, I recommend either creating your own LXC image or waiting for an official image to be released.

3

@maze-m

Image server for Incus and LXC
Almalinux 10 is now available.
https://images.linuxcontainers.org/

Leap upgrade is not available. However, the Almalinux10 image has been officially distributed.
Why not try transferring the contents of your server to Almalinux10?