Media Stack

The media-stack runs as an unprivileged LXC container (ID: 104) on the Proxmox host. It hosts a Docker-based media services stack with GPU-accelerated hardware transcoding via Intel HD Graphics 530 passthrough.

Deployment Strategy

A dedicated LXC container running Docker was chosen over individual VMs per service to consolidate resource usage while maintaining service isolation through Docker Compose orchestration.

Container Specs:

• Container ID: 104
• Compute: 2 Cores
• Memory: 2048MB RAM
• Swap: 2048MB
• Root Disk: 35GB on local-lvm
• Features: nesting=1 (required for Docker-in-LXC)
• Network: 192.168.1.104 on vmbr0
• Autostart: onboot=1

GPU Passthrough (Hardware Transcoding)

The Intel HD Graphics 530 iGPU is passed through from the Proxmox host into this container to enable hardware-accelerated video transcoding (Quick Sync Video). This avoids CPU-bound transcoding bottlenecks.

LXC Configuration:

lxc.cgroup2.devices.allow: c 226:0 rwm
lxc.cgroup2.devices.allow: c 226:128 rwm
lxc.mount.entry: /dev/dri dev/dri none bind,optional,create=dir

Device 226:0 is the DRM render node and 226:128 is the card node, giving the container full access to the GPU for media transcoding.

Storage Architecture

The Vault HDD (1TB) is bind-mounted into the container for media storage:

mp0: /mnt/pve/vault/data,mp=/data

This separates the media library (large, slow-tier storage) from the application data (fast SSD-backed root disk), ensuring the container root doesn't fill up with media files.

Docker Services

The container runs multiple Docker services via overlay networking. A total of 6 containers are active.

To inspect the running services: pct exec 104 -- docker ps --format "table {{.Names}}\t{{.Image}}\t{{.Status}}"