Notes from the network

Tutorials Set up Hysteria2 as a second endpoint Hysteria2 is a proxy that runs over QUIC on UDP and can answer like an ordinary HTTP/3 website. Here is a tested setup with a free certificate, to run next to VLESS and REALITY. Oct 11, 2026 · 7 min read Tutorials Set up VLESS over mKCP with TLS in Xray mKCP carries Xray traffic over UDP and trades extra bandwidth for lower latency. Here is a tested VLESS, mKCP and TLS setup for the current stable Xray, with a free certificate. Oct 11, 2026 · 12 min read Tutorials Set up VLESS and REALITY with Xray on a VPS REALITY makes VLESS traffic resemble an ordinary TLS connection to a real website, with no domain or certificate of your own. Here is a manual Xray setup built from the project's own documentation. Oct 4, 2026 · 10 min read Troubleshooting Diagnose a slow or overloaded VPS The site is up but everything is slow, and the usage graph only says "busy". Four commands tell you whether the server is short of CPU, memory, or disk, and which process is responsible. Sep 23, 2026 · 8 min read Tutorials Add swap to your VPS Your VPS ships with no swap, so when memory runs out the kernel kills a process and moves on. Here is how to spot that, add a swap file, and know when swap is the wrong fix. Sep 14, 2026 · 9 min read Tutorials Write cron jobs that do not fail silently Cron emails you when a job produces output. On a VPS with no mail server that email goes nowhere, so a broken job looks exactly like a working one. Jul 31, 2026 · 10 min read Tutorials Use SSH keys properly on your VPS Paste a public key on the order form and your server boots with it already installed. The root password still arrives by email, so here is how to finish the job. Jul 29, 2026 · 15 min read Tutorials Run several apps behind one Nginx reverse proxy One VPS, one public IP, several apps on local ports. How to give each app its own hostname and share one set of proxy headers between them. Jul 28, 2026 · 12 min read Tutorials Back up your VPS off server with restic How to put an encrypted restic repository on another machine, run it nightly from a systemd timer, and check that a restore actually works. Jul 27, 2026 · 17 min read