ERROR: Unsupported Python version: . NetBox requires Python 3.10 or later.

[micha11938]

Centos 8
Upgraded to PYTHON 3.11.3
netbox]$ python3 --version
Python 3.11.3

[netbox$ ls
debug kernels Python-3.11.3 Python-3.11.3.tgz
sudo PYTHON=/usr/src/python3.11.3 ./upgrade.sh

Message 👍
ERROR: Unsupported Python version: . NetBox requires
Python 3.10 or later. To specify an alternate Python executable, set
the PYTHON environment variable. For example:

Why this error. Python version 3.10 or higher is required.
3.11.3 is higher then 3.10

[markkuleinio]

1. You should set PYTHON to the executable path, not to a directory name.
2. If you already have Python 3.11.3 as the system Python, why do you even need to specify the Python executable manually?

[micha11938]

Hello,

Because when I execute the upgrade.sh script to configure netbox, the message is that at least Python 3.10 must be installed. In other words, the scripts keep seeing the default Python version.

Advice is to start the script with the statement I mentioned here before:

Sudo PYTHON = /usr/src/python 3.11.3 ./upgrade.sh

But that does not work either.
Michael

[markkuleinio]

Someone more CentOS-capable can chime in and tell the proper way of installing Python 3.11 on CentOS 8 if that is the problem, I don't know.

What does which python3 give you? Can you try setting PYTHON to that value?

[micha11938]

Python 3.11.3 is successfully installed. I will set it in the PATH and reboot. Probably that is going to work. Sent from [Proton Mail](https://proton.me/mail/home) for iOS

…

On Tue, Aug 26, 2025 at 20:53, Markku Leiniö ***@***.***(mailto:On Tue, Aug 26, 2025 at 20:53, Markku Leiniö <<a href=)> wrote: Someone more CentOS-capable can chime in and tell the proper way of installing Python 3.11 on CentOS 8 if that is the problem, I don't know. What does which python3 give you? Can you try setting PYTHON to that value? — Reply to this email directly, [view it on GitHub](#20181 (reply in thread)), or [unsubscribe](https://github.com/notifications/unsubscribe-auth/BFOZPCEGG2WZWSYEK23QVI33PSUJZAVCNFSM6AAAAACE3H6LK6VHI2DSMVQWIX3LMV43URDJONRXK43TNFXW4Q3PNVWWK3TUHMYTIMRSGUYTENI). You are receiving this because you authored the thread.Message ID: ***@***.***>

[micha11938]

Installed netbox with this manual in a few minutes.

https://gist.github.com/edmondgyampoh/b4931072ff5d1b9d96837ed632be6936

It's a crime to try install it the way as is described in the manual on the netbox website itself.
Tried Centos 8 and 9 , Ubuntu 22.04 and 24.4 , Debian 13. There is always something that doesn't work along the road: python version, user permissions, etc etc. User permissions vary per distribution.

The mentioned manual above solved all these problems.

[micha11938]

I set Python to the executable path and the script started up. After a while there appeared many errors. The Docker installation is much more simpeler.