Run your own stack: Proxmox, Docker, Portainer, Caddy, TrueNAS, Nextcloud, WireGuard and homelab setups that stay stable.
Proxmox
Cloned Ubuntu VMs in Proxmox get the same DHCP address because they share /etc/machine-id, which systemd uses as the DHCP client ID. Reset the machine-id on the clone and reboot, or prepare the template so every clone gets its own.
Proxmox
"cluster not ready - no quorum? (500)" means your Proxmox node can't see enough cluster members to vote. Run pvecm expected 1 to get it working right now, then fix the real cause: a dead node, a broken corosync link, a 2-node cluster without a QDevice, or a leftover cluster config.
Proxmox
"Failed to fetch https://enterprise.proxmox.com/... 401 Unauthorized" means Proxmox is using the paid enterprise repository without a subscription. Disable it, add the free no-subscription repository for PVE and Ceph, and apt update works again. Steps for Proxmox VE 9 (trixie), 8 and 7.
VPN
"Cannot open TUN/TAP dev /dev/net/tun" means your VPN can't reach the TUN device. On a Proxmox LXC, pass /dev/net/tun to the container. In Docker, add --device /dev/net/tun and NET_ADMIN. On a VPS, load the tun module. Exact commands for each.
Proxmox
Install the QEMU guest agent on Ubuntu 24.04/26.04 or Debian 12/13 with one apt command, enable it in Proxmox, then power-cycle the VM. Plus why systemctl enable shows a warning, and how to fix "QEMU guest agent is not running".
Self-Hosting
Changing a Proxmox host's IP takes two files and one command. Getting it wrong on a remote server means a drive to the data center. Here's the safe way for a single node and for a cluster.
Self-Hosting
Raspberry Pi projects often start with good intentions and end half-finished on a shelf. Not because they’re too hard — but because many tutorials quietly assume unlimited time, perfect hardware, and zero interruptions. This list is different. Below are five Raspberry Pi projects you can realistically build over a
Self-Hosting
Caddy is a modern web server that is often used as a reverse proxy in Docker environments. It is lightweight, fast, and supports automatic HTTPS out of the box. When combined with Docker and Portainer, Caddy can be a clean alternative to Nginx or Nginx Proxy Manager — but only if
Self-Hosting
Most network monitoring mistakes aren't about the tool. You're looking at the wrong interface or the wrong namespace. Here's how to find the right one, then see exactly who is using it.
Self-Hosting
If you already have a local project with real code and need to push it to GitLab—but no repository exists yet—this guide walks you through the correct, clean, and production-safe workflow. This article is written for developers, DevOps engineers, and homelab users who want a reliable Git
Self-Hosting
If you’re looking for an efficient way to manage and organize your bookmarks, Linkwarden is the perfect solution. This open-source, self-hosted bookmark manager helps you save, categorize, and access your favorite links with ease. In this guide, we’ll show you how to install Linkwarden on Portainer,
Self-Hosting
In this article, we will guide you on how to install Nextcloud on a Proxmox container running Ubuntu 24.01. Nextcloud is an excellent open-source platform for managing files, calendars, contacts, and more. Installing it on a Proxmox container running Ubuntu 24.01 is a straightforward process. This guide