Linux Containers and Virtualization
Shashank Mohan Jain
Linux Advanced Routing and Traffic Control HOWTO
Gregory Maxwell & Remco Mook & Martijn Oosterhout & Paul Schroeder & Jasper Spaans & Bert Hubert
Building Secure and Reliable Systems
Heather Adkins & Betsy Beyer & Paul Blankinship & Piotr Lewandowski & Ana Oprea & Adam Stubblefield
Linux Bible (10th edition)
Christopher Negus
Effective DevOps
Jennifer Davis & Ryn Daniels
sed & awk
Dale Dougherty & Arnold Robbins
Linux iptables Pocket Reference
Gregor N. Purdy