Guides from the NOC

Set up MySQL master-replica replication between two VPS servers step by step - binlog config, CHANGE MASTER TO, verifying sync, and fixing common errors.

Install MongoDB on an Ubuntu VPS, enable SCRAM authentication, open remote access safely, and fix the connection errors that trip people up most.

Step-by-step guide to installing PostgreSQL on an Ubuntu VPS, enabling remote access safely, and fixing the most common connection and auth errors.

Automate deploys to your VPS with GitHub Actions. Set up SSH deploy keys, fix common CI/CD errors, and get zero-downtime restarts.

Node.js app dies when you close SSH or reboot your VPS? Install PM2 to auto-restart on crash, survive reboots, and deploy with zero downtime.

Mail still bouncing after you fixed SPF, DKIM and PTR? Learn how to set your VPS hostname and FQDN correctly for Postfix, Exim and WHM.

Set up a self-hosted WireGuard VPN on your VPS: install, keys, wg0.conf, firewall rules, client config, and fixes for handshake and routing problems.

VPS stuck or unreachable after a kernel update? Learn why boot fails - full /boot, bad GRUB entry, fstab UUID - and how to recover it via console, fast.

Install and configure Varnish Cache on your VPS to serve pages in milliseconds. Step-by-step setup for Apache or Nginx backends, plus fixes for common issues.

Step-by-step guide to installing Apache, MySQL/MariaDB, PHP and a free SSL cert on a bare Ubuntu VPS, plus the vhost and .htaccess errors people hit.

Step-by-step guide to installing Nginx, PHP-FPM, MySQL/MariaDB and a free SSL cert on a bare Ubuntu VPS, plus the errors people hit along the way.

Scale past a single VPS with HAProxy: load balance traffic across backend servers using health checks, sticky sessions, algorithms, and SSL termination.

Disk shows plenty of free space but every write fails on your VPS? Learn to diagnose inode exhaustion with df -i, find the real culprit, and fix it for good.

Load average high but CPU sitting idle on your VPS? Learn how to confirm I/O wait with vmstat, find the blocked process, and fix the disk bottleneck.

Set up ClamAV and rkhunter on an unmanaged VPS to catch malware and rootkits early, cut false positives, and automate scheduled scans with cron jobs.

Moving to a new VPS? Learn how to migrate files, databases, mail, cron jobs, and DNS to a new server without downtime or lost email.

Want your own mail server instead of paying per mailbox? Step-by-step Postfix and Dovecot setup on a VPS, with the DNS records that make it actually deliver.

VPS throwing 'Too many open files' errors in Nginx, MySQL, or PHP-FPM? Learn how Linux file descriptor limits work and how to raise them safely.

Server time wrong on your VPS? See how clock drift silently breaks cron jobs, SSL handshakes, and MySQL replication - and fix it for good with chrony.

Learn how to configure unattended-upgrades on your Ubuntu/Debian VPS to auto-install security patches without breaking services or triggering surprise reboots.

phpMyAdmin timing out on a big database? Learn to back up and restore MySQL on your VPS with mysqldump, fix common errors, and automate it with cron.

Set up real-time VPS monitoring with Netdata so you catch high CPU, low disk, and memory issues before they take your site down. Step-by-step guide.

VPS emails not sending or timing out on port 25? Learn why cloud providers block it, how to confirm it, and how to fix outgoing mail the right way.

Resized your VPS but the extra disk, RAM, or CPU still isn't showing up? Learn why partitions don't auto-grow and how to safely expand them with growpart.