NGINX

General NGINX configuration

Realip

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Security options, headers, ciphers, and TLS settings.

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Check devices and connections

RAM

Linux Boot Process

Troubleshooting Boot Issues & System Recovery

GRUB - Grand Unified Boot Loader

Kernel, Modules, Tunables & initrd (Initialisation RAM Disk)

Single User Mode

FSCK

OOB Management - KVM & DRAC

Single User Mode

QUICK GUIDE: Clearing Disk Space

Quick Guide: Expanding Disks

STORAGE CONCEPTS

FHS - Filesystem Hierarchy Standard

Partitions and Filesystems

LVM (Logical Volume Manager)

SWAP

Archiving and Compression

fstab

Disk Performance

Networking Commands

Network Managers

DNS and Hosts Resolution

ARP

User & Group Management

User/Group/Password Files

Admin Privileges

File Permissions & Ownership

Package Managers

Compiling from source

Auto Restart Services

Sandboxing & CHROOT

Locale, Date & Time

Hostname

PAM

Clearing Command Line History

SSH Configuration

LDAP (Lightweight Directory Access Protocol)

Unison

NFS

rSync

FTP Troubleshooting

vSFTPd

Nick Abbots Script

One-liners

Bots/Crawlers & Control/Mitigation

Resource usage and performance

xmlrpc & wp-login

ANS IPs

Useful Online Tools

MySQL Optimisation, Performance, and Logging

Corruption and Repairs

User and Database Management

Binary Logging

Database Monitoring (New Relic)

MySQL Encryption

MySQL Remote Access

Storage Engines

MySQL Replication

XtraBackup

MySQL Backups - mysqldump and xtrabackup

SSL Certificates

Origin IP

Full Server Restore (Dedi or Virtual)

Commvault Backups

Bacula Restores

Commvault Restores

Permissions Restores

Bacula Bextract

Bacula Backups

SPF, DMARC, and DKIM

Plesk Mail

MTA & MDA

QUICK GUIDE: Mail Troubleshooting

Check Stats

LBv2 Overview

Addon Domain Script

Magento Installation

Useful Commands

Pacemaker