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Category articles197 articles
Learn VPS tasks in the order you need them, from signing in and transferring files to configuring the system, deploying apps, restoring backups, and troubleshooting.
Nginx running doesn't mean it's secure. Common risks on a VPS include outdated TLS configuration, missing security headers like HSTS/CSP, directly exposed origin IP, no request rate limiting, unprotected admin paths, and error logs nobody reads. This article gives an Nginx security hardening checklist suited to small sites and self-hosted services, in deployment order.
When a Docker container on a VPS keeps restarting, it's usually not Docker itself that's broken, but rather the application failing to start, missing configuration, port conflicts, failed health checks, or OOM. Troubleshooting in the order of logs, exit codes, restart policy, resources, and dependencies lets you quickly pinpoint the cause.
When your VPS website loads slowly but bandwidth isn't saturated and CPU isn't high, check TTFB first. This article walks through the browser waterfall, curl timing, Nginx upstream_time, PHP-FPM, database slow queries, DNS/TLS, and Cloudflare origin fetch in order.
SSH suddenly stops connecting after you enable UFW. Usually the server isn't broken — the problem is the SSH port, the cloud firewall, or rule ordering. This article covers four situations — still connected, locked out, console-only access, and rescue mode — with copy-paste troubleshooting and recovery commands.
After you connect to a VPS over SSH, the session drops after a while, or you see Broken pipe, Connection reset by peer, or Operation timed out. This is usually not a wrong password but idle timeout, network jitter, NAT reclamation, sshd keepalive, or a local network problem. This article gives troubleshooting and fix commands across three layers: client, server, and network path.
Cloudflare Tunnel lets web services on a VPS avoid exposing public ports directly: cloudflared actively connects out to Cloudflare, and Cloudflare then reaches back to your local service. This article explains which scenarios it suits, how to deploy it, how to bind a domain, how to protect the admin backend with Access, and how to troubleshoot common issues such as Inactive status, 502 errors, and the origin still being directly reachable.
Want to unify OpenAI, Claude, Gemini, DeepSeek, Qwen, Doubao and other models behind a single API entry point? This article covers when a self-hosted AI API gateway on a VPS makes sense, how to choose between One-API and New-API, Docker Compose deployment, channel configuration, key management, rate limiting, logging and a security checklist.
Dify is not n8n, and it is not Open WebUI. It is more like an AI application platform that runs on a VPS: knowledge base Q&A, RAG retrieval, Agents, workflows and model integrations all happen in one backend. This article explains clearly what scenarios Dify suits, how to choose VPS specs, how to deploy with Docker Compose, how to prevent OOM on 4GB of RAM, and how to build your first private knowledge base.
ARM VPS is usually cheaper, more power-efficient, and well suited to containers and web services, but not every project should buy one blindly. This article explains, in a way ordinary users can actually follow, the differences between ARM VPS and x86 VPS, the scenarios each fits, Docker compatibility, pre-purchase check commands, and when it's better to spend more and choose x86.
