Step-by-step guides pulled from real homelab projects — rewritten for anyone to follow, with internal IPs and account details stripped out. Real gotchas kept in, because that's the useful part.
A free MIT-licensed CLI that reads the two numbers your slicer never shows you — height over footprint, and flat underside floating in mid-air — and diffs new gcode against a print you already know came out right.
3D PrintingToolsCopy-pasted CSP headers break real sites, so most people water them down until they do nothing. Inventory what your site actually loads first — including the runtime fetch() calls that never appear in your HTML — then write a policy that fits it.
SecurityWebCamera drifting, menus scrolling by themselves, a character that walks without you — on Linux it's often a motherboard RGB controller enumerated as a joystick with its axes jammed at full deflection. Prove it in two minutes, then kill it with one udev rule.
Linux GamingHardwareA Klipper printer is a small Linux server with a published default password and a trust-everything network posture — here's the 20-minute lockdown, with the real commands and the gotchas that make a naive attempt look like it worked when it didn't.
Security3D PrintingA WebKitGTK conflict QIDITECH admits to in their own release notes, not a config mistake — the dmesg trace, the diagnosis, and the two-setting fix.
3D PrintingLinuxScripting docker-ce onto a fresh LXC or minimal VM over non-interactive SSH can leave the docker group missing and the socket refusing to start — here's the exact one-line fix.
DockerProxmoxA raw SQL write to a field an app encrypts at its own layer can succeed silently, then break the app's very next read in a way that looks exactly like data loss.
DatabasesSelf-HostingVoice-activity detection going silent after mute, a stale room-event race, and an iOS-only connection failure traced to Multipath TCP inside the SDK itself.
LiveKitWebRTCDSM's rsync binary is setuid-root, and that specifically breaks non-interactive SSH invocation — real hardening, not a bug. Here's the actual workaround.
SynologyMigrationsA login item created via the bw CLI can report success while the password is never actually persisted server-side — reproduced when the item lands in a shared organization collection.
VaultwardenAutomationThe official plugin's real request body shape isn't documented anywhere reachable through Grafana's own API — plus the one settings field that silently 404s every graph.
GrafanaCheckmkA browser extension auto-updated past what a one-version-behind self-hosted server could support, silently breaking sync while every other client kept working.
AutomationSelf-HostingAn internal, unauthenticated localhost port answers the exact same routes UniFi's own certificate auto-renewal presumably uses — reverse-engineered from the console's own UI.
UniFiAutomationBrowser-based VDI with Proxmox auto-cloning agent VMs on demand — the real permission set, every startup-script gotcha, and a general method for diagnosing a stuck clone/destroy loop from scratch.
KasmProxmoxVDIRunning your own internal certificate authority (step-ca) so every admin UI on your LAN gets a real, trusted cert — no more click-through security warnings.
PKIDockerMoving public domains from a vendor NAS's reverse proxy to a dedicated Caddy instance — plus the Cloudflare certificate trick you need if you're behind Cloudflare.
CaddyNetworkingRunning Vaultwarden (a Bitwarden-compatible server) in its own isolated container, and the safe way to migrate an existing vault without losing sessions or data.
VaultwardenDockerForwarding a UNIX domain socket over SSH — not a port — so browser automation running on a headless box can drive Chrome on your workstation, kept alive by a systemd user service.
SSHsystemdHeadless Docker Compose deployment (no web install wizard), avoiding the SSH-port collision, and mirroring an existing GitHub repo without giving it up as canonical.
GiteaDockerA self-hosted photo library with real ML search, plus CalDAV/CardDAV for contacts and calendars — and how to migrate years of existing data over safely.
ImmichSelf-HostingThree free, complementary scanners — network, container images, and web apps — set up to run on a schedule and actually get looked at.
SecurityOpenVASWiring your network controller, your hypervisor, an inventory system, and a monitoring stack together so new devices and VMs show up automatically — and the silent failure modes to watch for on every leg.
NetBoxProxmoxAutomationA fleet-wide notification rule silently discarding every service alert, plus real Docker container monitoring and a from-scratch agent bootstrap on a non-systemd host — every gotcha included.
CheckmkDockerMonitoringA per-game breakdown covering Docker-based servers, raw SteamCMD/systemd servers, and a whole Kubernetes-operator-managed one — plus two real bugs a dry "no update available" check would have hidden forever, including a management script that lies about its own exit code.
AutomationGame ServersBackupsInstalling Palworld via SteamCMD, exposing it publicly without a port-forward or leaking your home IP, and two config settings — guild-building permissions and PvP damage — that silently don't do what their names suggest.
Game ServersSteamCMDNetworkingRunning Enshrouded in Docker with split-horizon DNS for fast LAN play — and a real docker-compose bug where the container looked perfectly healthy while its port was never actually open to the host.
DockerGame ServersNetworkingDisabling decay/sandstorms/building limits, exposing a 100+ port UDP range through a VPS relay (and a silent config bug that broke it invisibly), a disk that snuck onto the wrong storage, and an auto-update cron that was failing on something nobody suspected.
Game ServersProxmoxNetworkingA self-hosted Hytale migration where the obvious save file was a decoy — the real multi-week world was trapped inside a stopped container's writable layer, thanks to a bind-mount path mismatch.
HytaleDockerGame ServersMoving a long-stopped Minecraft Bedrock world off a general-purpose Docker host onto its own dedicated server — the small file-permission gotcha that actually broke it, and why Bedrock needs its own box separate from Java.
MinecraftBedrockDockerA second Minecraft server built specifically for a Forge mod stuck on 1.7.10 — the Java 8 image tag requirement, a CurseForge CDN workaround, and rescuing a player from a mod dimension with no built-in way out.
MinecraftForgeDockerStanding up a modded Minecraft Java server on Fabric 1.20.1 — avoiding shared-storage I/O contention, resolving a modpack's full dependency tree via the Modrinth API, and a recipe-serializer crash with two completely unrelated causes.
MinecraftFabricGame ServersDeploying TeamSpeak 6 beta in Docker — bootstrapping WebQuery/SSH-query API access past a real chicken-and-egg deadlock, building AFK auto-move/mute yourself, and exposing voice + file transfer publicly without silently breaking the file-transfer half.
Self-HostingTeamSpeakDockerA real phone call impersonating Google tried to trigger a genuine account-recovery approval prompt — not a fake login page, the real thing. How the technique works, the tells, and what actually stopped it.
SecuritySocial EngineeringA precautionary infrastructure audit after an unrelated social-engineering attempt found an over-privileged automation API key — and a role downgrade that looked like a complete fix but wasn't. The real gap, how to actually verify a fix, and why to audit standing credentials on a schedule.
SecurityUniFiAccess ControlFixing weak SSH MAC algorithms across an entire fleet of mixed Linux containers, VMs, and vendor NAS units — and how to actually verify the fix worked.
SSHHardeningA dedicated backup target for your whole virtualization fleet — including physical Windows PCs, not just VMs — plus the permission gotchas that trip up almost everyone on first setup.
ProxmoxBackupsAn NFS bind-mount for a container's config folder is invisible to most backup tools — how to check for this silent gap and migrate onto real backed-up storage without losing anything.
DockerBackupsA second, independent backup server on a cloud VPS for genuine 3-2-1 coverage — locking it down with a firewall instead of a tunnel, a write-only sync credential, and the honest truth about backup immutability.
BackupsCloudA cloud droplet isn't a VM your hypervisor manages, so nothing backs it up automatically — plus a genuinely obscure Docker/overlay2 bug that can leave backups completely unrestorable while looking perfectly healthy.
BackupsDigitalOceanDockerAn off-site btrfs backup failed every night for 5 nights with zero alerting — the red herring that wasn't the cause, the real version-mismatch root cause, the fix, and closing the monitoring gap so it can't happen silently again.
BackupsMonitoringTwo approaches — a simple single-port tunnel for most games, and a VPS-based tunnel for games that need a whole range of ports — plus a subtle bug that can make a tunnel look healthy while being completely broken.
NetworkingGame ServersPUID/PGID are a LinuxServer.io convention, not a Docker feature. Set them on an image that ignores them, inside an unprivileged LXC that offsets every uid by 100000, and writes to an NFS share fail with permission denied while extraction looks like it succeeded.
DockerProxmoxNFSCloudflare's Free plan caps a single proxied response at 100 MB. Streaming survives it because segments are small; full-file downloads don't, and Range-resumed retries fail just as fast. How to confirm it in the origin's logs and route around it.
CloudflareJellyfinNetworkingReal-time monitoring uses inotify, which can never observe writes made by a different NFS client. It looks enabled and does nothing. Why it's structural, and a debounced poller that triggers a real scan instead.
JellyfinNFSRadarrNFSv4 trunking detection recognises a server it already has a session with and reuses the old connection, so a new fast path can carry zero bytes while mount, routing and ping all look correct. Plus why nconnect nearly doubled throughput from a VM.
NFS10GbEProxmoxkeep-daily keeps the newest snapshot per local calendar day, not per 24 hours. Backups running near local midnight collide, and a host with two backups can be pruned to one. Pair it with keep-last, and dry-run everything.
ProxmoxBackupsBackup clients pin the server's certificate fingerprint, so a routine renewal breaks every one of them at the same moment — and a nightly job that fails is completely silent. How to fix it, where the pins hide, and how to make sure it can't happen quietly again.
BackupsMonitoringProxmoxA misconfigured AllowedIPs value doesn't just fail to connect — it can hijack all of a host's outbound traffic via policy routing, even while the tunnel itself never connects. How to spot it, fix it, and avoid it from the start.
WireGuardNetworkingSecurityPutting a device on its own VLAN doesn't isolate it by default on most routers — how to check, fix it properly, and avoid a gotcha that silently breaks the direction you meant to keep working.
NetworkingSecurityProtocol and server choices that actually matter, a real gotcha with reused provider configs, and a test suite that goes well beyond a handful of pings.
VPNNetworkingBypassing an official Windows+Hyper-V requirement by finding the real Linux payload underneath — plus a real debugging story about a live-service game's hidden cloud dependencies, including two wrong turns before finding the real answer.
Self-HostingGame ServersA real security incident from one wrong env var name, a Cloudflare mTLS gotcha that broke only the iOS app, and the honest truth about what "automatic sync" can and can't mean on an iPhone.
SeafileSelf-HostingDiscovering a reverse proxy had zero access logging, standing up self-hosted Umami analytics, a dropped-image gotcha, and verifying the whole pipeline with a real simulated pageview instead of just a healthy container.
UmamiAnalyticsDockerDeploying a self-hosted Discord alternative with real WebRTC voice/video — the one-click Docker install, and the TLS gotcha that silently breaks voice chat (not just avatars) if you skip it.
DockerSelf-HostingLiveKitWiring up Mailgun + Cloudflare DNS so a contact form can actually deliver — a per-account domain limit, a brand-new account getting auto-disabled, and a dashboard that lags real DNS by several minutes.
MailgunDNSEmailBoth classic sitemap-ping URLs have been dead for years, IndexNow is the real replacement for everyone except Google, and how to verify Search Console via a plain DNS record instead of an OAuth grant to your DNS provider.
SEODNSSearch ConsolePunching a precise, single-device hole in a network-wide content filtering rule — and a real gotcha where the firewall API silently refuses to reorder rules, no matter how convincing the success response looks.
NetworkingFirewallDedicated service/bot accounts over reusing your own login, scoped roles instead of admin convenience, one-time tokens, and a real secret-storage gotcha that quietly drops passwords.
SecurityAutomation