Updating Python from 2.x to 3.x in Proxmox VE 6.1-7

[DavidHarrison1968]

Hi all,

I am currently running Proxmox VE 6.1-7 ( Linux proxmox1 5.3.18-2-pve #1 SMP PVE 5.3.18-2 ) which includes Python 2.7.16.

As I also run Zabbix 4.x as a monitoriting tool in my environment (in a VM) I would also like to monitory my Proxmox hosts.

I stumbled upon this article/solution ( https://github.com/takala-jp/zabbix-proxmox ) which has system requirements of Proxmox 5 or later and Python 3.4 or later.

Has anyone successfully updated Python on a Proxmox 6.1 host without issue - and can suggest the correct procedure without breaking any existing Proxmox functionality?

Thanks

David

 

[tom]

Proxmox VE 6.x is based on Debian Buster, which includes python 3.7.3-1 (should be installed by default)

See also https://packages.debian.org/buster/python3

 

[DavidHarrison1968]

hmmm.... from my shell...

Last login: Sun May 10 17:12:46 AEST 2020 on pts/0
Linux proxmox1 5.3.18-2-pve #1 SMP PVE 5.3.18-2 (Sat, 15 Feb 2020 15:11:52 +0100) x86_64

The programs included with the Debian GNU/Linux system are free software;
the exact distribution terms for each program are described in the
individual files in /usr/share/doc/*/copyright.

Debian GNU/Linux comes with ABSOLUTELY NO WARRANTY, to the extent
permitted by applicable law.
root@proxmox1:~# which python
/usr/bin/python
root@proxmox1:~# python
Python 2.7.16 (default, Oct 10 2019, 22:02:15)
[GCC 8.3.0] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>>

 

[ness1602]

which python3
/usr/bin/python3

 

[DavidHarrison1968]

ahh, I see, thank you.

Is there any issue making Python 3 the default rather than 2.7x?

 

[DavidHarrison1968]

though looking at the script, it looks like it calls Python3 specifically..

 

[Okeur]

ahh, I see, thank you.

Is there any issue making Python 3 the default rather than 2.7x?

Simplest way is to update your .bashrc file with :

alias python=python3

Other topics suggest to use the update-alternative : https://linuxconfig.org/how-to-change-default-python-version-on-debian-9-stretch-linux