Upgrade Proxmox 8 to 9 - Fast Guide

A fast, no-fluff walkthrough to upgrade Proxmox VE from 8.4 to 9.0.
We run the pre-flight, switch repos to Debian 13 “Trixie,” perform the dist-upgrade, reboot, and talk about the highlights: kernel 6.14.8, ZFS 2.3 RAID-Z expansion, SDN Fabrics, AppArmor 4, plus quick gotchas.

Command cheat-sheet & docs:
GitHub – Upgrade Guide (commands & notes): https://github.com/HomeSecExplorer/vi...
Proxmox Guide: https://pve.proxmox.com/wiki/Upgrade_...

Chapters
00:00 Intro
00:20 TL;DR (what’s new)
01:40 Pre-flight checker (pve8to9)
02:15 Switch to Debian 13 + Proxmox 9 repos
02:48 apt dist-upgrade
03:15 Reboot & verify (pveversion -v, uname -r)
03:55 Outro

Breaking changes / notes
• GlusterFS storage plugin removed - migrate before upgrading
• Possible NIC renames (udev) - pin by MAC
• AppArmor 4 may block odd paths - check dmesg | grep DENIED
• Warning: snapshot/backup first; test on a lab node

Tools shown: Proxmox VE 8.4 - 9.0, Debian 13 “Trixie”, ZFS 2.3, Ceph “Squid” 19.2

Tags: proxmox 9, proxmox upgrade, proxmox ve 9, upgrade proxmox 8 to 9, debian 13 trixie, zfs 2.3, raid-z expansion, sdn fabrics, homelab, virtualization

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#proxmox #homelab #debian

Doc's
https://github.com/HomeSecExplorer