Optimize Apache for Performance and Resource Usage
Maximize website speed! Learn how optimizing PHP/MySQL, modern Apache (Event MPM), and client-side caching boosts performance, resource limits, and when to upgrade RAM.
Troubleshooting
- 4 min read
Load Investigation Basics
Linux server load high? Diagnose CPU, memory & I/O bottlenecks (`top`/`iotop`). Fix PHP/MySQL, handle abuse & malware for better performance.
- 4 min read
Installing mod_reqtimeout
Defend Apache vs Slowloris with `mod_reqtimeout`. Guide: install on EA3/EA4 & set `RequestReadTimeout` for header/body to drop slow attacks.
- 5 min read
Imunify360: Quick Reference Guide
This guide provides a quick reference for Imunify360, covering its features, installation, command-line usage, uninstallation, and troubleshooting common conflicts.
- 4 min read
Using mod_qos and mod_reqtimeout to mitigate Slowloris attacks
mod_qos and mod_reqtimeout are two Apache modules that help mitigate Slowloris-style attacks (a type of Denial of Service (DoS) attack that targets web servers by opening many simultaneous connections and keeping them alive as long as possible, thereby exhausting the server’s resources) by controlling how long and how much data clients are allowed to send….
- 27 min read
Troubleshoot disk space issues
Linux disk full? Learn to find large files/dirs (`df`, `du`, `find`) & high inode usage. Guide covers cleanup for common paths & cPanel specifics.
- 8 min read
Manage your server’s firewall with iptables
iptables can act as your server’s gatekeeper, deciding which network traffic is allowed in, out, or through your server.
- 11 min read
Understanding and Managing Qmail on Your Server
This guide details Qmail, a modular mail server. Learn to manage mail queues, investigate spam, and troubleshoot common issues for Plesk and InterWorx email environments.
- 3 min read
Troubleshooting bot access issues
Search bots blocked? Troubleshoot `robots.txt` issues & CSF IP blocks (ModSecurity). Guide: check perms, unblock IPs & whitelist trusted bots.
- 4 min read
Troubleshooting Apache startup error: no space left on device
Learn to fix the Apache startup error “Failed to set a watch for httpd.service’s PID file: No space left on device” by checking disk space or increasing inotify watches.
- 6 min read
Identifying which processes are using swap memory
Learn to pinpoint processes consuming swap memory. This guide explains how to use top and a custom script to identify culprits for efficient memory troubleshooting.
- 4 min read
Using the GNU Screen Terminal Multiplexer
GNU Screen: A terminal multiplexer for multiple sessions. Detach, reattach, share & manage windows with commands & `ctrl+a` key bindings.
