(Note: 348 pages of super clear Chinese version PDF document of Nagios network monitoring ensures absolute value for money, Table of contents: Chapter 1 about Nagios Chapter 2 new features of nagios3.0 Chapter 3 Getting Started Chapter 4 preparing to configure Nagios Chapter 5 basic concepts of Nagios monitoring and configuration Chapter 6 basic operations of running Nagios Chapter 7 Nagios advanced Chapter 8 Nagios professional topics Chapter 9 security and performance tuning of Nagios Chapter 10 content related to software integration Chapter 11 development related)