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CapturedByNguyen

Homelab & Vietnam

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Changing VMID of a VM in Proxmox: Backup/Restore vs Config Edit
Technical

Changing VMID of a VM in Proxmox: Backup/Restore vs Config Edit

Changing VMID of a VM in Proxmox? Backup/restore is the safe way, but config edit works if you know the snapshot and symlink gotchas. Here's both.

NguyenAugust 16, 20263 min read
How to handle unprivileged containers and large UIDs/GIDs in Proxmox
Technical

How to handle unprivileged containers and large UIDs/GIDs in Proxmox

Unprivileged containers break when files are owned by UIDs above 65536. Remap the range in the container config and chown the data — here's the exact fix.

NguyenAugust 14, 20263 min read
Automated install via PXE not finding ISO file on Proxmox
Technical

Automated install via PXE not finding ISO file on Proxmox

PXE booting Proxmox but the installer can't find the ISO? It's usually the NFS export or the rootwait kernel param. Here's the fix.

NguyenAugust 14, 20262 min read
IO Pressure Stall – Unexplained: Diagnosing Proxmox LXC and ZFS I/O Hangs
Technical

IO Pressure Stall – Unexplained: Diagnosing Proxmox LXC and ZFS I/O Hangs

Unexplained IO pressure stalls on Proxmox usually come down to ZFS and LXC resource limits. Here's how to pinpoint what's causing the hang and fix it.

NguyenAugust 14, 20264 min read
LVM Snapshot-as-Volume-Chain: Newly created qcow2 image reuses old guest data after VM deletion
Technical

LVM Snapshot-as-Volume-Chain: Newly created qcow2 image reuses old guest data after VM deletion

LVM snapshots don't zero old blocks, so a new qcow2 on that chain can inherit stale data from a deleted VM. Here's the fix.

NguyenAugust 13, 20261 min read
How Do I Setup Jellyfin on Proxmox With Only 1 SSD for Storage?
Technical

How Do I Setup Jellyfin on Proxmox With Only 1 SSD for Storage?

How do I setup Jellyfin on Proxmox with only 1 SSD for storage? Put it in an LXC, keep media and metadata on the same disk, and use RAM for transcodes.

NguyenAugust 12, 20262 min read
Automatically Suspend VMs After Shutdown of Proxmox Host
Technical

Automatically Suspend VMs After Shutdown of Proxmox Host

Suspend each VM before Proxmox host shutdown with a simple systemd service—tested on PVE 8, no init.d hacks needed.

NguyenAugust 11, 20263 min read
Immutable backup on Proxmox: what you can actually enforce on a homelab budget
Technical

Immutable backup on Proxmox: what you can actually enforce on a homelab budget

Immutable backup on a homelab means more than prune schedules. PBS cannot make backups truly immutable—here's what you can actually enforce without a cloud

NguyenAugust 11, 20268 min read
NVMe controller is down on Proxmox — check ASPM and kernel params before blaming the drive
Technical

NVMe controller is down on Proxmox — check ASPM and kernel params before blaming the drive

The nvme0: controller is down error on Proxmox is usually PCIe power management, not a dead drive. Disable ASPM and try a kernel boot parameter first.

NguyenAugust 11, 20262 min read
Rancher cluster node has disk pressure — fix it in a Proxmox homelab
Technical

Rancher cluster node has disk pressure — fix it in a Proxmox homelab

Disk pressure in Rancher on Proxmox usually isn't about eviction thresholds. It's the LXC storage layer and Rancher's image garbage collection.

NguyenJuly 16, 20263 min read

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  • Technical 122
  • Personal 8

Latest posts

VPS Crashing on Proxmox: Diagnose It with qemu-server and LXC Logs

VPS Crashing on Proxmox: Diagnose It with qemu-server and LXC Logs

September 24, 2026
Uploading certificates caused access issues: fix Proxmox pveproxy user ownership

Uploading certificates caused access issues: fix Proxmox pveproxy user ownership

September 23, 2026
Enterprise iSCSI support in PVE: multipath and CHAP with a TrueNAS target

Enterprise iSCSI support in PVE: multipath and CHAP with a TrueNAS target

September 23, 2026
Can’t Access Proxmox Web GUI: Fix It Fast

Can’t Access Proxmox Web GUI: Fix It Fast

September 22, 2026
No SSH and GUI Access on Proxmox: Recover from the Console

No SSH and GUI Access on Proxmox: Recover from the Console

September 22, 2026
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CapturedByNguyen

Notes on running a homelab, and on a country I left. Written by Nguyen in California.

Technical

Homelab, Proxmox, self-hosting — what broke, and what actually fixed it.

  • VPS Crashing on Proxmox: Diagnose It with qemu-server and LXC Logs
  • Uploading certificates caused access issues: fix Proxmox pveproxy user ownership
  • Enterprise iSCSI support in PVE: multipath and CHAP with a TrueNAS target
  • Can’t Access Proxmox Web GUI: Fix It Fast

Personal

Vietnam, the years since, and the things worth writing down.

  • Little Saigon quận Cam có còn là thủ đô của người Việt Nam tị nạn tại Mỹ?
  • A Journey Back in Time: Revisiting My Middle School (Hai Ba Trung)
  • Tản mạn về cuộc sống (2024)
  • Dịa chỉ chợ trái cây ở Florida (Clearwater, Miami, Destin)

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