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Proxmox VE gives you two ways to slice a server: full virtual machines via KVM, and LXC system containers that share the host's kernel. The right choice per workload is usually clear once you know the three questions that decide it: isolation, kernel, and migration. This guide explains how each actually works, compares them on the dimensions that matter operationally, settles the Docker question with Proxmox's own current guidance, and ends with a decision table you can apply per service.

Bare metal wins on the two numbers that decide whether a game server feels good: worst-case tick time and worst-case latency. A single-tenant VM on hardware you control gets close. An oversold multi-tenant VPS is where fixed-tick simulation falls apart, because a vCPU scheduled a few milliseconds late is a missed tick every player sees as rubber-banding. This guide covers what a hypervisor adds to a tick loop, why the 95th-percentile tick time matters more than average throughput, how to measure steal time and MSPT on your own server, and when a VM is still the right call.

NetworkManager is the daemon that configures the network on every RHEL-family server, and since RHEL dropped the old network-scripts it is the only supported way to do it. This crash course runs it the way a dedicated server uses it: headless, static, over SSH, with nmcli and keyfiles instead of a desktop applet. You will learn the device-and-profile model that clears up most nmcli confusion, a full static IPv4 and IPv6 setup you can paste and adapt, where profiles live on disk across RHEL 8, 9, and 10, and how to change the network on a remote box without locking yourself out.

Connecting multiple office sites or datacenters securely and efficiently is a critical challenge for modern businesses. Traditional VPN solutions like IPsec or OpenVPN can be complex to configure and maintain, especially in multi-site environments. WireGuard offers a lightweight, fast alternative that's easier to set up. VyOS 1.5 fully supports WireGuard, making it an excellent choice for organizations looking to interconnect multiple datacenters or sites. In this guide, we'll show you how to set up a site-to-site WireGuard tunnel on VyOS 1.5. We'll cover routing, firewall configuration, and best practices. By the end, your sites will be securely connected over the internet with traffic routed effectively between LANs.