Automated Server Backups with Rsync

Introduction

Rsync is a fast, versatile file synchronization tool built into most Linux distributions. Combined with cron, it creates a reliable automated backup solution for your server.

Basic Rsync Syntax

rsync -avz --delete /source/directory/ /backup/directory/

Key flags:

• -a — archive mode (preserves permissions, timestamps, symlinks)
• -v — verbose output
• -z — compress data during transfer
• --delete — remove files from destination that no longer exist in source

Remote Backup Script

#!/bin/bash
TIMESTAMP=$(date +%Y%m%d_%H%M%S)
LOG="/var/log/backup_${TIMESTAMP}.log"

rsync -avz --delete \
  -e "ssh -p 22 -i /root/.ssh/backup_key" \
  /var/www/ \
  /etc/ \
  /home/ \
  backupuser@remote-server:/backups/$(hostname)/ \
  >> "$LOG" 2>&1

echo "Backup completed: $(date)" >> "$LOG"

Scheduling with Cron

# Daily backup at 3 AM
0 3 * * * /root/scripts/backup.sh

Exclude Patterns

Create an exclude file to skip unnecessary data:

# /root/scripts/backup-exclude.txt
*.log
*.tmp
/var/cache/*
/tmp/*
node_modules/

Add --exclude-from=/root/scripts/backup-exclude.txt to your rsync command.