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CapturedByNguyen

Homelab & Vietnam

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Ceph OSDs not being able to be configured in fully routed Environment: fix the network first
Technical

Ceph OSDs not being able to be configured in fully routed Environment: fix the network first

Ceph OSDs not being able to be configured in a fully routed environment usually means the public and cluster networks aren't reachable. Here's the fix.

NguyenOctober 30, 20262 min read
Unable to Start VM with Hookscript Proxmox: Trace the Invocation Path and Fix It
Technical

Unable to Start VM with Hookscript Proxmox: Trace the Invocation Path and Fix It

Unable to start VM with hookscript Proxmox? It's usually the executable bit, a bad exit code, or the script not where qm expects it. Here's the full path.

NguyenOctober 29, 20262 min read
Proxmox VM Fingerprint: What the Guest Can See and Which Identifiers You Can Change
Technical

Proxmox VM Fingerprint: What the Guest Can See and Which Identifiers You Can Change

A stock Proxmox VM leaks SMBIOS UUID, serial, MAC OUI, and the hypervisor CPUID bit. Here's exactly which ones qm set can change and which you can't touch.

NguyenOctober 29, 20263 min read
Metasploitable2 Proxmox: Import the VMDK with qm importdisk
Technical

Metasploitable2 Proxmox: Import the VMDK with qm importdisk

Metasploitable2 runs fine on Proxmox if you import the VMDK with qm importdisk and set the network to NAT. Here's the exact procedure.

NguyenOctober 28, 20262 min read
Proxmox VM Unreachable After New Install: Narrow It Down With ip and bridge Commands
Technical

Proxmox VM Unreachable After New Install: Narrow It Down With ip and bridge Commands

Proxmox VM unreachable after new install? Use ip and bridge commands to isolate host, bridge, or guest layer. Here's the sequence that finds it.

NguyenOctober 28, 20261 min read
How to Download Files from Proxmox Node: LXC Rootfs, VM Disks, and Backups
Technical

How to Download Files from Proxmox Node: LXC Rootfs, VM Disks, and Backups

How to download files from Proxmox node depends on what you mean: a file inside an LXC, a VM disk image, or a backup.

NguyenOctober 27, 20262 min read
qcow2 file is bigger as hdd config: why and how to shrink it
Technical

qcow2 file is bigger as hdd config: why and how to shrink it

Your qcow2 file is bigger than the configured disk because of preallocation, snapshots, or metadata.

NguyenOctober 27, 20262 min read
Backup LXC to NAS NFS Share Fails: Fix Root Squash and NFS Version
Technical

Backup LXC to NAS NFS Share Fails: Fix Root Squash and NFS Version

Backup LXC to NAS NFS share fails with permission denied? The fix is root squash and NFS version. Here's the TrueNAS and Proxmox config that works.

NguyenOctober 26, 20262 min read
Proxmox Export Summary to CSV: pvesh Recipe for Host and Datacenter
Technical

Proxmox Export Summary to CSV: pvesh Recipe for Host and Datacenter

No built-in export button, but pvesh gives you the summary in JSON. Pipe it through jq to get a clean CSV for any host or the whole datacenter.

NguyenOctober 26, 20262 min read
QEMU Guest Agent is not running: three separate causes, three one-command checks
Technical

QEMU Guest Agent is not running: three separate causes, three one-command checks

That Proxmox warning means one of three things: no agent package in the guest, no virtio-serial channel, or the Agent option is off.

NguyenOctober 25, 20261 min read

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  • Technical 212
  • Personal 8

The hardware

What these posts run on, and cheaper ways to start

Latest posts

Proxmox Cloud-Init Drive Shows as CD-ROM: Expected vs. Broken

Proxmox Cloud-Init Drive Shows as CD-ROM: Expected vs. Broken

November 9, 2026
Proxmox Hookscript Failing When It Does More Than One Thing: Fix the Execution Context

Proxmox Hookscript Failing When It Does More Than One Thing: Fix the Execution Context

November 8, 2026
Proxmox Kernel Not Updating: Check Apt Pinning and the Meta-Package

Proxmox Kernel Not Updating: Check Apt Pinning and the Meta-Package

November 8, 2026
ZFS Pool Suspended: Offline the Disk, Clear the Errors, Online It Again

ZFS Pool Suspended: Offline the Disk, Clear the Errors, Online It Again

November 7, 2026
Proxmox /access/permissions pool: Why GET Returns Wrong Permissions for Pool Members

Proxmox /access/permissions pool: Why GET Returns Wrong Permissions for Pool Members

November 7, 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.

  • Proxmox Cloud-Init Drive Shows as CD-ROM: Expected vs. Broken
  • Proxmox Hookscript Failing When It Does More Than One Thing: Fix the Execution Context
  • Proxmox Kernel Not Updating: Check Apt Pinning and the Meta-Package
  • ZFS Pool Suspended: Offline the Disk, Clear the Errors, Online It Again

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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