Mastering Linux Network Administration
Jay LaCroix
Practical Ansible
Vincent Sesto
Ethical Hacker’s Penetration Testing Guide
Samir Kumar Rakshit
Docker Deep Dive
Nigel Poulton
Linux Advanced Routing and Traffic Control HOWTO
Gregory Maxwell & Remco Mook & Martijn Oosterhout & Paul Schroeder & Jasper Spaans & Bert Hubert