unsupported centos release 'AlmaLinux release 10.0 (Purple Lion)

[arhimede]

I am trying to create a CT in Proxmox VE 9.05

I am getting:

TASK ERROR: unable to create CT 803 - unsupported centos release 'AlmaLinux release 10.0 (Purple Lion)

I remember years ago it was a hack, some file to edit and allow Alma 10 to be installed still...

 

[Impact]

It would be similar to this, just for the centos specific file: https://forum.proxmox.com/threads/unsupported-debian-version-14.169763/#post-792541

 

[arhimede]

It was working until today , after latest update i am getting

run_buffer: 571 Script exited with status 25
lxc_init: 845 Failed to run lxc.hook.pre-start for container "556"
__lxc_start: 2039 Failed to initialize container "556"
TASK ERROR: startup for container '556' failed

 

[Impact]

As mentioned in the link these changes will be overwritten whenever the container package is updated. Just apply the temporary fix again.

 

[arhimede]

As mentioned in the link these changes will be overwritten whenever the container package is updated. Just apply the temporary fix again.

Thnaks, indeed the hack was lost and i need to re-aply it

Still i am waiting for an "official" release in order to use it in production, tests are very fine

 

[eilko]

pve-container (6.0.13) trixie; urgency=medium

* setup: switch network configuration from network-scripts to NetworkManager
for RHEL 10 and derivatives like CentOS Stream, AlmaLinux and Rocky Linux.

-- Proxmox Support Team <support@proxmox.com> Mon, 15 Sep 2025 19:24:30 +0200

 

[arhimede]

Indeed it is working now, with few modifications:
Thanks @eilko


Enable and Start NetworkManager

systemctl enable --now NetworkManager

Convert Existing Configurations

nmcli con migrate

Verify the New Configuration

nmcli device status

Check if the nameservers are set !

vi /etc/resolv.conf

add nameservers if necessary