Advanced Linux System Administration: Automation and Enterprise Management

Advanced Linux system administration techniques for automation, troubleshooting, and maintaining enterprise-level infrastructure. Learn scripting, backup strategies, and disaster recovery planning.

Advanced System Administration

Take your Linux administration skills to the next level with automation, advanced troubleshooting, and enterprise management techniques.

1. System Automation

# Cron job management
crontab -e
# 0 2 * * * /usr/local/bin/backup.sh
# 0 6 * * 1 /usr/local/bin/weekly-maintenance.sh

# Systemd service creation
sudo nano /etc/systemd/system/webapp.service
sudo systemctl enable webapp.service
sudo systemctl start webapp.service

2. Backup and Recovery

# Automated backup script
#!/bin/bash
rsync -avz --delete /home/ /backup/home/
tar -czf /backup/etc-20250930.tar.gz /etc/
mysqldump --all-databases > /backup/mysql-20250930.sql

3. Network Configuration

# Network interface configuration
sudo nano /etc/netplan/01-network.yaml
sudo netplan apply

# Monitoring network connections
ss -tulpn
netstat -i
iftop

4. Troubleshooting

# System diagnostics
dmesg | tail
systemctl --failed
journalctl -p 3 -x

# Performance analysis
sar -u 1 10
vmstat 1 10
iostat -x 1 10

Conclusion

Advanced system administration involves automation, proactive monitoring, and comprehensive backup strategies. These skills ensure reliable and efficient Linux infrastructure management.