Server Management
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How to Set vi (Vim) as the Default Editor in Ubuntu
Make vi or vim the default editor in Ubuntu: set the editor alternative plus EDITOR and VISUAL so git, crontab,…
rsync Says “ALL DONE” but Files Are Missing: How to Verify
rsync says ALL DONE but files are missing? It's the exit code or a hidden error. Learn to read rsync…
How to Migrate a Website to a New Server With rsync
Migrate a website to a new server with rsync: passwordless SSH, a resumable pull script, background nohup runs, and how…
How to Install Tailscale on Ubuntu (Zero-Config Mesh VPN for Self-Hosters)
Install Tailscale on Ubuntu and join devices to a private mesh in 5 minutes. WireGuard under the hood, MagicDNS, subnet…
How to Install Caddy Server on Ubuntu (Automatic HTTPS, Drop-in nginx Alternative)
Install Caddy server on Ubuntu — automatic HTTPS via Let's Encrypt, simpler config than nginx, reverse proxy, static files, and…
How to Install Cloudflare Tunnel on Ubuntu (Expose Local Services, No Port Forwarding)
Install Cloudflare Tunnel on Ubuntu and expose home or VPS services without opening ports. cloudflared setup, ingress rules, systemd service,…
How to Set Up WireGuard VPN on Ubuntu (Server, Linux Client, and iOS)
Install and configure WireGuard VPN on Ubuntu — server keys, /etc/wireguard/wg0.conf, NAT rules, iOS QR-code client, full working setup in…
How to Set Up MySQL Primary-Replica Replication on Ubuntu (Production Guide)
Set up MySQL primary-replica replication on Ubuntu in 30 minutes. GTID-based config, replication user, snapshot transfer, monitoring, and failover prep.
How to Install MariaDB 11.4 LTS on Ubuntu 24.04 (Fresh Install, Secured)
Install MariaDB 11.4 LTS on Ubuntu 24.04 from the official repo. Secure setup, UTF8MB4 defaults, my.cnf tuning, and migration from…
How to Install fail2ban on Ubuntu (SSH, nginx, and WordPress Filters)
Install fail2ban on Ubuntu and configure SSH, nginx, and WordPress jails. Tested commands, jail.local config, and unban how-to for 2026.