LOW
The issue described is more of a configuration and setup challenge rather than a security vulnerability. The severity is rated as LOW because it does not involve an exploitable flaw but instead highlights common pitfalls when setting up homelab environments. There are no known exploits for these issues, and the focus should be on best practices in configuration.

The post details the challenges faced by a user setting up their first homelab with Proxmox to run a reliable Plex server. Initially, the setup encountered nightly hard crashes on the Proxmox node, random VM lockups, and inconsistent behavior from Plex. These issues can be attributed to various configuration missteps or hardware incompatibilities that are common when setting up virtualized environments for media servers. By addressing specific settings such as BIOS configurations, GPU passthrough configurations, and kernel parameters, the user was able to stabilize their homelab environment, indicating a significant improvement in system reliability and performance.

Affected Systems
  • Proxmox
  • Plex Media Server
Affected Versions: All versions before stable configurations
Remediation
  • Update BIOS settings to ensure compatibility with virtualization features: `sudo update-bios`
  • Configure GPU passthrough correctly in Proxmox: Edit `/etc/pve/qemu-server/.conf` file and set appropriate parameters.
  • Tune kernel parameters for stability: Add `vm.max_map_count=262144` to `/etc/sysctl.conf`
Stack Impact

The setup issues mentioned can impact the stability of homelab stacks, particularly those using Proxmox and Plex Media Server. Incorrect BIOS settings or GPU passthrough configurations could lead to crashes and performance degradation.

Source →